**Hyundai Genesis 2009 OBD2: What Codes Mean & How To Fix?**

Hyundai Genesis 2009 Obd2: Understanding the codes and how to address them effectively is crucial for maintaining your vehicle’s performance. At MERCEDES-DIAGNOSTIC-TOOL.EDU.VN, we provide comprehensive insights and solutions for your Hyundai Genesis diagnostic needs. By utilizing our expertise, you gain access to enhanced diagnostic capabilities, streamlined repair processes, and proactive maintenance strategies.

1. What is Hyundai Genesis 2009 OBD2 and Why Is It Important?

The Hyundai Genesis 2009 On-Board Diagnostics II (OBD2) system is an essential component for monitoring and maintaining your vehicle’s health. It’s important because it provides real-time data and diagnostic trouble codes (DTCs) that help identify potential issues, ensuring optimal performance and longevity of your car.

The On-Board Diagnostics II (OBD2) system in your Hyundai Genesis 2009 is like a vigilant health monitor, constantly checking various systems to ensure everything runs smoothly. This system is crucial because it provides numerous benefits, including early problem detection, standardized diagnostics, cost savings on repairs, performance optimization, and environmental protection.

1.1 How does the Hyundai Genesis 2009 OBD2 System Work?

The Hyundai Genesis 2009 OBD2 system works by continuously monitoring various sensors and components throughout the vehicle. According to a study by the National Highway Traffic Safety Administration (NHTSA) in 2022, OBD2 systems track parameters such as engine performance, emissions, and transmission functions. When a sensor detects a problem, it sends a signal to the vehicle’s computer, which then stores a diagnostic trouble code (DTC). This DTC can be accessed using an OBD2 scanner, helping technicians diagnose and address issues efficiently.

1.2 Why is OBD2 Important for Hyundai Genesis 2009 Owners?

OBD2 is important for Hyundai Genesis 2009 owners because it offers several key benefits:

• Early Problem Detection: The OBD2 system can detect minor issues before they escalate into major, costly repairs.
• Standardized Diagnostics: OBD2 provides a standardized set of diagnostic trouble codes (DTCs), making it easier for technicians to identify and address problems accurately.
• Cost Savings: By identifying problems early, OBD2 helps prevent expensive repairs and keeps your vehicle running efficiently.
• Performance Optimization: Monitoring your vehicle’s performance through OBD2 ensures it operates at its best, improving fuel efficiency and overall driving experience.
• Environmental Protection: OBD2 helps ensure your vehicle meets emissions standards, contributing to a cleaner environment.

1.3 Common OBD2 Trouble Codes in Hyundai Genesis 2009

Understanding common OBD2 trouble codes can help you address issues more effectively. Here’s a list of some frequent codes and their potential causes:

Code	Description	Possible Causes
P0011	“A” Camshaft Position Timing – Over-Advanced or System Performance (Bank 1)	Camshaft variable timing solenoid failure, low engine oil level, incorrect engine timing, unsuitable engine oil, variable valve timing actuator failure, worn timing chain.
P0101	Mass Air Flow (MAF) Sensor Circuit Range/Performance	Large vacuum leaks, split intake air boot or PCV hose, defective intake manifold gaskets, faulty MAF sensor, wiring issues, defective barometric pressure sensor.
P0171	System Too Lean (Bank 1)	Control module software update needed, vacuum leaks, faulty MAF sensor, clogged fuel filter, weak fuel pump, dirty fuel injectors.
P0300	Random/Multiple Cylinder Misfire Detected	Worn spark plugs, ignition wires, coils, incorrect ignition timing, vacuum leaks, low fuel pressure, defective MAF sensor, crankshaft/camshaft sensor issues.
P0420	Catalyst System Efficiency Below Threshold (Bank 1)	Inefficient catalytic converter, defective oxygen sensors, engine misfires.
P0440	Evaporative Emission Control System Malfunction	Missing or defective fuel cap, damaged fuel cap, torn evaporative system hoses, defective fuel tank sending unit gasket, split carbon canister, defective vent valve.
P0507	Idle Air Control System RPM Higher Than Expected	Defective idle air control motor, intake manifold vacuum leaks, carbon buildup in throttle body, defective coolant temperature sensor.
P0700	Transmission Control System Malfunction	Defective shift solenoids, faulty engine coolant temperature sensor, defective valve body, dirty transmission fluid.

2. How to Use an OBD2 Scanner with Your Hyundai Genesis 2009

Using an OBD2 scanner is a straightforward process that can save you time and money on diagnostics. Here’s a step-by-step guide to help you get started:

• Locate the OBD2 Port: The OBD2 port is typically located under the dashboard on the driver’s side.
• Plug in the Scanner: Insert the OBD2 scanner into the port.
• Turn on the Ignition: Turn the ignition key to the “ON” position without starting the engine.
• Read the Codes: Follow the scanner’s instructions to read and record any diagnostic trouble codes (DTCs).
• Interpret the Codes: Use resources like MERCEDES-DIAGNOSTIC-TOOL.EDU.VN to understand what the codes mean and identify potential issues.
• Clear the Codes (Optional): If you’ve addressed the issue, you can clear the codes using the scanner. However, it’s essential to understand the problem before clearing the codes to ensure it doesn’t reappear.

2.1 Step-by-Step Guide to Connecting and Using an OBD2 Scanner

To effectively use an OBD2 scanner with your Hyundai Genesis 2009, follow these detailed steps:

1. Locate the OBD2 Port: The OBD2 port is usually found under the dashboard on the driver’s side. It’s a 16-pin connector, so it should be easily identifiable.
2. Plug in the Scanner: Insert the OBD2 scanner firmly into the port. Ensure it’s securely connected to establish a proper connection.
3. Turn on the Ignition: Turn the ignition key to the “ON” position. This provides power to the vehicle’s computer without starting the engine.
4. Power On the Scanner: Most OBD2 scanners will power on automatically once connected. If not, there’s usually a power button you’ll need to press.
5. Read the Codes: Follow the scanner’s on-screen prompts to read the diagnostic trouble codes (DTCs). The scanner will communicate with the vehicle’s computer and display any stored codes.
6. Record the Codes: Write down all the codes displayed. Note the order in which they appear, as this can sometimes indicate the sequence of issues.
7. Interpret the Codes: Use a reliable resource like MERCEDES-DIAGNOSTIC-TOOL.EDU.VN or a comprehensive OBD2 code database to understand what each code means. This will help you identify potential problems.
8. Optional: Clear the Codes: If you have addressed the identified issues, you can use the scanner to clear the codes. Be cautious: only clear codes if you are confident the problem has been resolved. Clearing codes without fixing the issue will only cause the light to reappear later.
9. Verify the Fix: After clearing the codes, start the engine and drive the vehicle under conditions that previously triggered the code. This will help you confirm whether the problem has been resolved.
10. Recheck if Necessary: If the check engine light comes back on, recheck the codes to see if the same or different issues are present.

2.2 Choosing the Right OBD2 Scanner for Your Needs

Selecting the right OBD2 scanner is essential for accurate and efficient diagnostics. Here’s a guide to help you choose the best scanner for your needs:

• Basic Scanners: These are typically inexpensive and provide basic functionality, such as reading and clearing DTCs. They are suitable for simple diagnostics.
• Mid-Range Scanners: These offer more advanced features like live data streaming, freeze frame data, and the ability to perform some component tests. They are a good choice for DIY enthusiasts and small repair shops.
• Professional-Grade Scanners: These are the most comprehensive scanners, offering advanced diagnostics, bi-directional control, and access to vehicle-specific data. They are ideal for professional technicians and advanced users.

Consider the following factors when choosing an OBD2 scanner:

• Compatibility: Ensure the scanner is compatible with your Hyundai Genesis 2009.
• Features: Determine which features are most important to you (e.g., live data, freeze frame data, bi-directional control).
• Ease of Use: Look for a scanner with an intuitive interface and clear instructions.
• Price: Set a budget and compare scanners within your price range.
• Reviews: Read customer reviews to get an idea of the scanner’s reliability and performance.

2.3 Tips for Accurate OBD2 Scanning and Interpretation

For accurate OBD2 scanning and interpretation, keep these tips in mind:

• Ensure Proper Connection: Make sure the scanner is securely connected to the OBD2 port to avoid communication errors.
• Use Reliable Resources: Refer to reputable sources like MERCEDES-DIAGNOSTIC-TOOL.EDU.VN for accurate code definitions and troubleshooting tips.
• Check for Software Updates: Keep your scanner’s software updated to ensure it has the latest code definitions and features.
• Consider Freeze Frame Data: Freeze frame data provides a snapshot of the vehicle’s parameters when the DTC was triggered, which can help narrow down the problem.
• Verify the Issue: Before replacing any parts, verify the issue by performing additional tests and inspections.

3. Common Hyundai Genesis 2009 OBD2 Codes and Their Meanings

Understanding the common OBD2 codes for your Hyundai Genesis 2009 is crucial for effective troubleshooting. Here are some of the most frequent codes and their meanings:

3.1 P0011: “A” Camshaft Position Timing – Over-Advanced or System Performance (Bank 1)

This code indicates that the camshaft position is more advanced than the engine control module (ECM) expects. The causes could be a faulty camshaft variable timing solenoid, low engine oil level, incorrect engine timing, unsuitable engine oil, variable valve timing actuator failure, or a worn timing chain. According to a study by the Society of Automotive Engineers (SAE) in 2023, issues with the camshaft timing system can significantly affect engine performance and fuel efficiency.

3.2 P0101: Mass Air Flow (MAF) Sensor Circuit Range/Performance

This code suggests that the mass air flow (MAF) sensor is not reading within the expected range. Potential causes include large vacuum leaks, split intake air boot or PCV hose, defective intake manifold gaskets, a faulty MAF sensor, wiring issues, or a defective barometric pressure sensor. The MAF sensor is critical for measuring the amount of air entering the engine, and any inaccuracies can lead to poor engine performance.

3.3 P0171: System Too Lean (Bank 1)

This code indicates that the engine is running lean, meaning there is too much air and not enough fuel in the air-fuel mixture. Possible causes include the need for a control module software update, vacuum leaks, a faulty MAF sensor, a clogged fuel filter, a weak fuel pump, or dirty fuel injectors. Lean conditions can cause engine misfires and potential damage if not addressed promptly.

3.4 P0300: Random/Multiple Cylinder Misfire Detected

This code signifies that the engine is experiencing misfires in multiple cylinders. The causes could be worn spark plugs, ignition wires, coils, incorrect ignition timing, vacuum leaks, low fuel pressure, a defective MAF sensor, or crankshaft/camshaft sensor issues. Engine misfires can result in rough idling, reduced power, and increased emissions.

3.5 P0420: Catalyst System Efficiency Below Threshold (Bank 1)

This code indicates that the catalytic converter is not functioning as efficiently as it should. Potential causes include an inefficient catalytic converter, defective oxygen sensors, or engine misfires. A malfunctioning catalytic converter can lead to increased emissions and potential failure to pass emissions tests.

3.6 P0440: Evaporative Emission Control System Malfunction

This code suggests a problem with the evaporative emission control system (EVAP), which prevents fuel vapors from escaping into the atmosphere. Possible causes include a missing or defective fuel cap, damaged fuel cap, torn evaporative system hoses, a defective fuel tank sending unit gasket, a split carbon canister, or a defective vent valve.

3.7 P0507: Idle Air Control System RPM Higher Than Expected

This code indicates that the engine’s idle speed is higher than expected. Potential causes include a defective idle air control motor, intake manifold vacuum leaks, carbon buildup in the throttle body, or a defective coolant temperature sensor.

3.8 P0700: Transmission Control System Malfunction

This code signifies a general issue within the transmission control system. Possible causes include defective shift solenoids, a faulty engine coolant temperature sensor, a defective valve body, or dirty transmission fluid. Transmission issues can lead to shifting problems and potential damage to the transmission.

3.9 Additional Hyundai Genesis 2009 OBD2 Codes

Code	Description	Possible Causes
P0102	Mass Air Flow (MAF) Sensor Circuit Low Input	Unplugged or damaged MAF sensor wiring, loose or corroded electrical terminals, faulty MAF sensor.
P0113	Intake Air Temperature Sensor Circuit High Input	Defective intake air temperature sensor, dirty air filter, defective MAF sensor, faulty or corroded sensor wiring.
P0128	Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature)	Defective engine thermostat, defective engine coolant temperature sensor, defective intake air temperature sensor, defective cooling system, low engine coolant.
P0135	O2 Sensor Heater Circuit Malfunction (Bank 1, Sensor 1)	Defective oxygen sensor/air fuel ratio sensor, exhaust system leak, intake air system leak, low fuel pressure, defective engine coolant temperature sensor, defective sensor wiring, PCM software issues.
P0174	System Too Lean (Bank 2)	PCM software update needed, vacuum leaks, faulty MAF sensor, clogged fuel filter, weak fuel pump, dirty fuel injectors.
P0200	Injector Circuit Malfunction	Defective fuel injector, faulty or corroded fuel injector wiring, plugged fuel injector, dirt in the fuel injector.
P0201	Cylinder 1 Injector Circuit Malfunction	Defective fuel injector, faulty or corroded fuel injector wiring, plugged fuel injector, dirt in the fuel injector.
P0202	Cylinder 2 Injector Circuit Malfunction	Malfunction of the fuel injector, malfunction of the PCM fuel injector driver circuit, defective wiring in the fuel injector harness, defective fuel injector power circuits.
P0203	Cylinder 3 Injector Circuit Malfunction	Fuel injector failure, powertrain control module (PCM) failure, wiring issue.
P0205	Cylinder 5 Injector Circuit Malfunction	Fuel injector failure, powertrain control module (PCM) failure, wiring issue.
P0301	Cylinder 1 Misfire Detected	Worn spark plugs, ignition wires, coils, incorrect ignition timing, vacuum leaks, low fuel pressure, defective MAF sensor, crankshaft/camshaft sensor issues.
P0302	Cylinder 2 Misfire Detected	Worn spark plugs, ignition wires, coils, incorrect ignition timing, vacuum leaks, low fuel pressure, defective MAF sensor, crankshaft/camshaft sensor issues.
P0303	Cylinder 3 Misfire Detected	Worn spark plugs, ignition wires, coils, incorrect ignition timing, vacuum leaks, low fuel pressure, defective MAF sensor, crankshaft/camshaft sensor issues.
P0304	Cylinder 4 Misfire Detected	Worn spark plugs, ignition wires, coils, incorrect ignition timing, vacuum leaks, low fuel pressure, defective MAF sensor, crankshaft/camshaft sensor issues.
P0401	Exhaust Gas Recirculation Flow Insufficient Detected	Restriction in the EGR passages, defective EGR valve, lack of proper vacuum or electrical signal to the EGR valve, malfunctioning EGR vacuum supply solenoid.
P0430	Catalyst System Efficiency Below Threshold (Bank 2)	Defective catalytic converter, internal engine damage resulting in high oil consumption and/or a leaking head gasket has damaged the catalytic converter.
P0441	Evaporative Emission Control System Incorrect Purge Flow	Missing fuel cap, stuck open or closed purge valve, defective fuel cap, distorted or damaged fuel tank filler neck, torn evaporative system hoses.
P0442	Evaporative Emission Control System Leak Detected (small leak)	Defective or damaged fuel cap, distorted or damaged fuel tank filler neck, small tear in the evaporative system hoses, defective fuel tank sending unit gasket.
P0455	Evaporative Emission Control System Leak Detected (gross leak)	Missing fuel cap, defective or damaged fuel cap, distorted or damaged fuel tank filler neck, torn evaporative system hoses, defective fuel tank sending unit gasket.
P0500	Vehicle Speed Sensor Malfunction	Defective vehicle speed sensor, defective speedometer, vehicle speed sensor wiring or connector issues, communication (CAN) bus problems.
P0501	Vehicle Speed Sensor Range/Performance	Defective vehicle speed sensor, defective speedometer, vehicle speed sensor wiring or connector issues, communication (CAN) bus problems.
P0505	Idle Air Control System Malfunction	Defective idle air control motor, intake manifold vacuum leaks, carbon buildup in the throttle body air passages.
P0506	Idle Air Control System RPM Lower Than Expected	Defective/sticking idle air control motor, intake manifold vacuum leaks, carbon buildup in the throttle body air passages, defective power steering pressure switch.
P0600	Serial Communication Link Malfunction	Defective PCM (Power Train Control Module), defective PCM data bus wiring/connections, defective PCM data bus ground circuit(s), defective PCM or other control module controlled output devices.
P0601	Internal Control Module Memory Check Sum Error	Lack of proper voltage to the PCM, defective PCM memory module, defective PCM ground circuit(s), defective PCM controlled output devices.
P0602	Control Module Programming Error	Powertrain Control Module (PCM) failure, wiring issue.
P0603	Internal Control Module Keep Alive Memory (KAM) Error	Lack of proper voltage to the Keep Alive Memory connection on the PCM, defective PCM Keep Alive Memory Module (KAM), defective PCM ground circuit(s).
P0605	Internal Control Module Read Only Memory (ROM) Error	Lack of proper voltage and/or ground to the PCM, defective PCM ROM memory module, defective PCM ground circuit(s), defective PCM controlled output devices.
P0705	Transmission Range Sensor Circuit Malfunction (PRNDL Input)	Defective transmission range sensor (PRNDL input), defective transmission range sensor wiring or connector, defective valve body, defective manual shift valve linkage.
P0706	Transmission Range Sensor Circuit Range/Performance	Defective transmission range sensor (PRNDL input), defective transmission range sensor wiring or connector, defective valve body, defective manual shift valve linkage.
P0720	Output Speed Sensor Circuit Malfunction	Defective output speed sensor, defective shift solenoids, defective engine coolant temperature sensor, defective valve body, dirty transmission fluid, defective output speed sensor wiring or connector.
P0730	Incorrect Gear Ratio	Defective shift solenoids, defective engine coolant temperature sensor, defective valve body, dirty transmission fluid.
P0841	Transmission Fluid Pressure Sensor/Switch “A” Circuit Range/Performance	Transmission control module (TCM) failure, transmission fluid level is low, transmission fluid pressure sensor failure, wiring issue.
P0842	Transmission Fluid Pressure Sensor/Switch “A” Circuit Low	Transmission control module (TCM) failure, transmission fluid level is low, transmission fluid pressure sensor failure, wiring issue.
P0845	Transmission Fluid Pressure Sensor/Switch “B” Circuit Range/Performance	Transmission control module (TCM) failure, transmission fluid level is low, transmission fluid pressure sensor failure, wiring issue.
P0846	Transmission Fluid Pressure Sensor/Switch “B” Circuit Range/Performance	Transmission control module (TCM) failure, transmission fluid level is low, transmission fluid pressure sensor failure, wiring issue.
P0847	Transmission Fluid Pressure Sensor/Switch “B” Circuit Low	Transmission control module (TCM) failure, transmission fluid level is low, transmission fluid pressure sensor failure, wiring issue.
P0901	Clutch Actuator Circuit Range/Performance	Clutch master cylinder failure, clutch solenoid failure, transmission control module (TCM) failure.
P0935	Hydraulic Pressure Sensor Range/Performance	Hydraulic power unit assembly failure, transmission control module (TCM) failure, wiring issue.
P0942	Hydraulic Unit Malfunction	Hydraulic power unit assembly failure, transmission control module (TCM) failure, wiring issue.
P0944	Loss of Hydraulic Pressure	Clogged transmission filter, transmission fluid level is low, transmission oil pump failure, wiring issue.
P0961	Pressure Control Solenoid “A” Control Circuit Range/Performance	Transmission shift solenoid failure.
P0A08	DC/DC Converter Status Circuit	Inverter/converter assembly failure, powertrain control module (PCM) failure, wiring issue.
P0A0D	High Voltage System Interlock Circuit	High voltage safety device failure, inverter/converter assembly failure, power management control module failure, service disconnect plug is not properly connected, wiring issue.
P0A0F	Engine Failed to Start	Hybrid transaxle assembly failure, internal engine failure, power management control module failure.
P0A7F	Battery Module Deterioration	Poor connections at the HV battery, a problem with the HV battery, ECU issues.
P0A80	Replace Hybrid Battery Pack	High voltage battery assembly failure.
P0B22	Drive Motor “A” Current Monitoring Circuit Range/Performance	Battery contactor assembly failure, battery energy control module (BECM) failure.
P0B24	Battery Voltage Sense “A” Circuit Range/Performance	Battery energy control module (BECM) failure, high voltage battery assembly failure, wiring issue.
P0B26	Battery Voltage Sense “B” Circuit Range/Performance	Battery energy control module (BECM) failure, high voltage battery assembly failure, wiring issue.
P0B28	Battery Current Sense “A” Circuit Range/Performance	Battery energy control module (BECM) failure, high voltage battery assembly failure, wiring issue.
P0B30	Battery Current Sense “B” Circuit Range/Performance	Battery energy control module (BECM) failure, high voltage battery assembly failure, wiring issue.
P0C00	Drive Motor “A” Inverter Performance	Drive motor generator power inverter control module failure.
P0C09	Generator Speed Sensor “A” Circuit	Drive motor generator assembly failure, drive motor generator power inverter control module failure.
P0C11	Drive Motor “A” Coolant Pump Control Circuit/Open	Coolant system leak, drive motor generator power inverter control module failure, engine cooling fan failure, water pump failure.
P0C14	Drive Motor “A” Coolant Temperature Sensor Circuit	Coolant system leak, drive motor generator power inverter control module failure, engine cooling fan failure, water pump failure.
P0C15	Drive Motor “A” Coolant Temperature Sensor Circuit Range/Performance	Coolant system leak, drive motor generator power inverter control module failure, engine cooling fan failure, water pump failure.
P2000	NOx Adsorber Efficiency Below Threshold Bank 1	Diesel particulate filter (DPF) failure, intake air leak, mass airflow (MAF) sensor is dirty/loss of calibration.
P2002	Diesel Particulate Filter Efficiency Below Threshold Bank 1	Diesel particulate filter (DPF) failure, intake air leak, mass airflow (MAF) sensor is dirty/loss of calibration.
P2004	Intake Manifold Runner Control Stuck Open Bank 1	A failed IMRC actuator, a problem with the intake manifold or linkage, wiring issues.
P2006	Intake Manifold Runner Control Stuck Closed Bank 1	Intake manifold runner control actuator failure, powertrain control module (PCM) failure, restricted vacuum lines.
P2101	Throttle Actuator Control Motor Circuit Range/Performance	Accelerator pedal position (APP) assembly failure, powertrain control module (PCM) failure, throttle control motor failure, wiring issue.
P2122	Throttle/Pedal Position Sensor/Switch “D” Circuit Low Input	Accelerator pedal position (APP) assembly failure, powertrain control module (PCM) failure, throttle control motor failure, wiring issue.
P2135	Throttle/Pedal Position Sensor/Switch “A”/”B” Voltage Correlation	Accelerator pedal position (APP) assembly failure, powertrain control module (PCM) failure, throttle position sensor (TPS) failure, wiring issue.
P2138	Throttle/Pedal Position Sensor/Switch “D”/”E” Voltage Correlation	Accelerator pedal position (APP) assembly failure, powertrain control module (PCM) failure, throttle position sensor (TPS) failure, wiring issue.
P2181	Cooling System Performance	Engine coolant heater failure, engine coolant level is too low, thermostat failure.
P2210	NOx Sensor Circuit Malfunction Bank 1	NOx sensor failure, powertrain control module (PCM) failure, wiring issue.
P2213	NOx Sensor Circuit Malfunction Bank 2	NOx sensor failure, powertrain control module (PCM) failure, wiring issue.
P2237	O2 Sensor Positive Current Control Circuit / Open Bank 1 Sensor 1	Exhaust leak, oxygen sensor failure, powertrain control module (PCM) failure, wiring issue.
P2238	O2 Sensor Positive Current Control Circuit Low Bank 1 Sensor 1	Exhaust leak, oxygen sensor failure, powertrain control module (PCM) failure, wiring issue.
P2251	O2 Sensor Negative Current Control Circuit / Open Bank 1 Sensor 1	Exhaust leak, oxygen sensor failure, powertrain control module (PCM) failure, wiring issue.
P2302	Ignition Coil “A” Secondary Circuit	Ignition coil failure, powertrain control module (PCM) failure, wiring issue.
P2303	Ignition Coil “B” Secondary Circuit	Ignition coil failure, powertrain control module (PCM) failure, wiring issue.
P2305	Ignition Coil “C” Secondary Circuit	Ignition coil failure, powertrain control module (PCM) failure, wiring issue.
P2308	Ignition Coil “D” Secondary Circuit	Ignition coil failure, powertrain control module (PCM) failure, wiring issue.
P2310	Ignition Coil “E” Secondary Circuit	Ignition coil failure, powertrain control module (PCM) failure, wiring issue.
P2401	Evaporative Emission System Leak Detection Pump Control Circuit Open	Evap leak detection pump failure, powertrain control module (PCM) failure, wiring issue.
P2402	Evaporative Emission System Leak Detection Pump Control Circuit Shorted	Evap leak detection pump failure, powertrain control module (PCM) failure, wiring issue.
P2422	Evaporative Emission System Vent Valve Stuck Closed	EVAP vent valve failure, powertrain control module (PCM) failure, wiring issue.
P2431	Secondary Air Injection System Air Flow/Pressure Sensor Circuit Range/Performance Bank 1	Air control solenoid failure, powertrain control module (PCM) failure, secondary air system pressure sensor failure, wiring issue.
P2432	Secondary Air Injection System Air Flow/Pressure Sensor Circuit Range/Performance Bank 2	Air control solenoid failure, powertrain control module (PCM) failure, secondary air system pressure sensor failure, wiring issue.
P2500	Charging System Voltage Low	Alternator failure, battery failure, powertrain control module (PCM) failure, wiring issue.
P2501	Charging System Voltage High	Alternator failure, battery failure, powertrain control module (PCM) failure, wiring issue.
P2503	Charging System Voltage Low	Alternator failure, battery failure, wiring issue.
P2509	ECM/PCM Power Input Signal Intermittent	Powertrain control module (PCM) failure, powertrain control module (PCM) power relay failure, wiring issue.
P250C	Oil Level Sensor Circuit	Oil level sensor failure, powertrain control module (PCM) failure, wiring issue.
P2601	Coolant Pump “A” Control Circuit/Open	Coolant heat storage (CHS) water pump failure, coolant heat storage (CHS) water pump relay, powertrain control module (PCM) failure, wiring issue.
P2607	Intake Air Heater “A” Control Circuit Low	Intake air heater, powertrain control module (PCM) failure, wiring issue.
P2609	Intake Air Heater “A” Performance	Intake air heater, powertrain control module (PCM) failure, wiring issue.
P2610	Engine Off Timer Performance	An internal PCM problem, a problem with the PCM power or ground circuit.
P2614	Camshaft Position Sensor “B” Circuit / Open	Broken tone ring, camshaft position sensor (CMP) failure, powertrain control module (PCM) failure, wiring issue.
P2706	Transmission Friction Element “A” Apply Time Range/Performance	Transmission control module (TCM) failure, transmission fluid level is low, transmission shift solenoid failure, wiring issue.
P2711	Unexpected Mechanical Gear Disengagement	Internal transmission failure, transmission control module (TCM) failure, transmission fluid level is low, transmission solenoid failure, wiring issue.
P2714	Pressure Control Solenoid “D” Performance or Stuck Off	Transmission control module (TCM) failure, transmission fluid level is low, transmission shift solenoid failure, wiring issue.
P2716	Pressure Control Solenoid “D” Electrical	Transmission control module (TCM) failure, transmission fluid level is low, transmission shift solenoid failure, wiring issue.
P2723	Pressure Control Solenoid “E” Performance or Stuck Off	Transmission control module (TCM) failure, transmission fluid level is low, transmission shift solenoid failure, wiring issue.
P2803	Transmission Intermediate Shaft Speed Sensor “B” Circuit	Powertrain control module (PCM) failure, transmission control module (TCM) failure, transmission range sensor failure, wiring issue.
P2806	Transmission Range Sensor Circuit Range/Performance	Powertrain control module (PCM) failure, transmission control module (TCM) failure, transmission range sensor failure, transmission range sensor is out of adjustment, wiring issue.
P2809	Transmission Pressure Control Solenoid “F” Control Circuit Range/Performance	Transmission control module (TCM) failure, transmission fluid level is low, transmission pressure control solenoid failure, wiring issue.
P2810	Transmission Pressure Control Solenoid “F” Control Circuit/Open	Transmission control module (TCM) failure, transmission fluid level is low, transmission pressure control solenoid failure, wiring issue.
P2815	Transmission Pressure Control Solenoid “G” Control Circuit Range/Performance	Transmission control module (TCM) failure, transmission fluid level is low, transmission pressure control solenoid failure, wiring issue.
P2A00	O2 Sensor Circuit Range/Performance Bank 1 Sensor 1	Exhaust leak, oxygen sensor failure, powertrain control module (PCM) failure, wiring issue.
P2A01	O2 Sensor Circuit