Understanding Chevy Volt OBD2 codes from resources like GM-Volt.com is crucial for maintaining your vehicle’s performance and longevity; that’s why we at MERCEDES-DIAGNOSTIC-TOOL.EDU.VN offer expert insights into interpreting these codes, helping you diagnose and address issues effectively, plus information LSI keywords such as diagnostic tools, fault codes, and vehicle maintenance.
Contents
1. What Are Chevy Volt OBD2 Codes and Why Are They Important?
Chevy Volt OBD2 codes are standardized codes that a vehicle’s onboard diagnostic system (OBD) generates when it detects a problem. They’re important because they provide crucial information about the nature and location of the issue, and without understanding them it will be hard to fix your car.
1.1. Understanding the Basics of OBD2 Systems in Chevy Volt
The On-Board Diagnostics II (OBD2) system is a standardized system used in most vehicles, including the Chevy Volt, to monitor engine performance, emissions, and other critical systems. According to the Environmental Protection Agency (EPA), OBD2 systems were mandated in all cars and light trucks sold in the United States starting in 1996 to ensure emissions compliance. When a problem is detected, the OBD2 system generates a diagnostic trouble code (DTC), commonly referred to as an OBD2 code. This code helps technicians and car owners identify and address the issue.
1.2. Why Chevy Volt Owners Should Pay Attention to OBD2 Codes
As a Chevy Volt owner, paying attention to OBD2 codes is crucial for several reasons:
- Early Problem Detection: OBD2 codes can alert you to potential problems before they escalate into costly repairs.
- Informed Decision Making: Understanding the codes allows you to discuss the issue intelligently with mechanics, ensuring you’re not overcharged or misled.
- Maintenance: Addressing issues promptly can extend the life of your Chevy Volt and maintain its fuel efficiency.
- Resale Value: A well-maintained vehicle with a clean diagnostic history can command a higher resale value.
1.3. Common Chevy Volt OBD2 Codes and Their Meanings
Here are some common OBD2 codes you might encounter with your Chevy Volt, along with their potential meanings:
| Code | Description | Possible Causes |
|---|---|---|
| P0A08 | DC/DC Converter Status Circuit High | Faulty DC/DC converter, wiring issues, or a problem with the hybrid control module. |
| P0AA6 | Hybrid Battery Voltage System Isolation Fault | Insulation failure in the high-voltage system, coolant leak, or a faulty hybrid battery pack. |
| P0AC4 | Hybrid Powertrain Control Module Requested MIL Illumination | This code indicates that the hybrid powertrain control module has detected a problem and is requesting the malfunction indicator lamp (MIL) to illuminate. |
| P0D26 | Hybrid Battery Pack Cooling Fan Control Circuit Low | Faulty cooling fan, wiring issues, or a problem with the hybrid control module. |
| P1E00 | Hybrid Powertrain Control System Requested MIL Illumination | Similar to P0AC4, this code indicates a general issue with the hybrid powertrain system. |
| P1E65 | Battery Energy Control Module Internal Performance | Issues within the battery energy control module, potentially related to cell balancing or voltage monitoring. |
| P1FFF | Hybrid/EV Battery Pack State of Charge Out of Range | Indicates that the battery pack’s state of charge is either too high or too low, potentially due to charging issues or a faulty battery management system. |
| P057B | Cruise Control Brake Circuit Low | Faulty brake switch, wiring issues, or a problem with the cruise control module. |
| P062B | Internal Control Module Fuel Injector Control Performance | Issues within the engine control module (ECM) related to fuel injector control. |
| P0700 | Transmission Control System Malfunction | A general transmission issue that requires further diagnosis to pinpoint the exact problem. |
| P0C29 | Drive Motor “A” Inverter Performance | Indicates a problem with the inverter that controls the drive motor, potentially affecting performance and efficiency. |
| P0D57 | Hybrid Battery Pack Temperature Sensor “A” Circuit High | Faulty temperature sensor, wiring issues, or a problem with the hybrid control module. |
| P0E3B | Drive Motor Generator Inverter Temperature Sensor Circuit High | Similar to P0D57, but related to the inverter temperature sensor. |
| P16E3 | Electric/Hybrid Vehicle Battery Pack Voltage Implausible | The battery pack voltage is not within the expected range, potentially due to a faulty battery management system or individual cell issues. |
| P1B01 | Hybrid/EV Battery Pack Coolant Pump Control Circuit Open | Faulty coolant pump, wiring issues, or a problem with the hybrid control module. |
| P1B3F | Drive Motor “A” Position Sensor Circuit Range/Performance | Issues with the motor position sensor, which can affect motor control and performance. |
| P1B3E | Drive Motor “A” Torque Performance | Indicates that the motor is not producing the expected torque, potentially due to motor issues, inverter problems, or control module faults. |
| P1B32 | Hybrid/EV Battery Pack Current Sensor “A” Circuit Performance | Faulty current sensor, wiring issues, or a problem with the hybrid control module. |
| P1B29 | Hybrid/EV Battery Pack Voltage Sensor “A” Circuit Performance | Similar to P1B32, but related to the voltage sensor. |
| P1AF0 | Hybrid/EV Battery Pack Internal Resistance High | High internal resistance within the battery pack, which can reduce performance and range. |
| P1AFA | Hybrid/EV Battery Pack Cell Balancing Circuit Performance | Issues with the battery pack’s cell balancing system, which ensures that all cells are at a similar state of charge. |
| P3056 | Hybrid/EV Battery Pack Output Voltage High | The battery pack output voltage is higher than expected, potentially due to overcharging or a faulty battery management system. |
| P3057 | Hybrid/EV Battery Pack Output Voltage Low | The battery pack output voltage is lower than expected, potentially due to undercharging or a faulty battery management system. |
| P3061 | Hybrid/EV Battery Pack Internal Cell Temperature Above Threshold | One or more cells within the battery pack are overheating, which can lead to reduced performance and potential damage. |
| P3077 | Hybrid/EV Battery Pack Current Unstable | The battery pack current is fluctuating unexpectedly, potentially due to a faulty current sensor or a problem with the hybrid control module. |
| P3081 | Hybrid/EV Battery Pack Cell Imbalance | Individual cells within the battery pack have significantly different voltages, indicating a potential issue with cell health or the battery management system. |
| P30E2 | Hybrid/EV Battery Pack Cell Voltage Low | One or more cells within the battery pack have a lower voltage than expected, potentially indicating a faulty cell or a problem with the battery management system. |
| P30E3 | Hybrid/EV Battery Pack Cell Voltage High | One or more cells within the battery pack have a higher voltage than expected, potentially indicating a faulty cell or a problem with the battery management system. |
| P0401 | Exhaust Gas Recirculation Flow Insufficient Detected | EGR system malfunction. |
| P0420 | Catalyst System Efficiency Below Threshold (Bank 1) | Catalytic converter issue. |
| P0442 | Evaporative Emission Control System Leak Detected (small leak) | EVAP system leak. |
| P0455 | Evaporative Emission Control System Leak Detected (gross leak) | Major EVAP system leak. |
| P0300 | Random/Multiple Cylinder Misfire Detected | Engine misfire. |
| P0171 | System Too Lean (Bank 1) | Fuel mixture issue. |
| P0172 | System Too Rich (Bank 1) | Fuel mixture issue. |
| P0325 | Knock Sensor 1 Circuit Malfunction (Bank 1 or Single Sensor) | Knock sensor issue. |
| P0101 | Mass or Volume Air Flow Circuit Range/Performance Problem | Mass Air Flow (MAF) sensor issue. |
| P0113 | Intake Air Temperature Circuit High Input | Intake Air Temperature (IAT) sensor issue. |
| P0128 | Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature) | Thermostat issue. |
| P0507 | Idle Air Control System RPM Higher Than Expected | Idle control issue. |
| P2533 | Ignition Switch Run/Start Position Circuit Open | Ignition switch issue. |
| P061B | Internal Control Module Torque Calculation Performance | ECM issue. |
| P062F | Internal Control Module EEPROM Error | ECM issue. |
| P0562 | System Voltage Low | Battery or charging system issue. |
| P0563 | System Voltage High | Battery or charging system issue. |
| P0606 | ECM/PCM Processor | ECM issue. |
| P069E | Fuel Pump Control Module Requested MIL Illumination | Fuel pump issue. |
| P2635 | Fuel Pump A Low Flow Performance | Fuel pump issue. |
| P228D | Fuel Pressure Regulator 1 Control Performance – Forced Fuel Shut Off | Fuel pressure issue. |
| P0315 | Crankshaft Position System Variation Not Learned | Crankshaft position sensor issue. |
| P0011 | “A” Camshaft Position – Timing Over-Advanced or System Performance (Bank 1) | Camshaft timing issue. |
| P0014 | “B” Camshaft Position – Timing Over-Advanced or System Performance (Bank 1) | Camshaft timing issue. |
| P0016 | Crankshaft Position – Camshaft Position Correlation (Bank 1 Sensor A) | Camshaft/crankshaft correlation issue. |
| P0017 | Crankshaft Position – Camshaft Position Correlation (Bank 1 Sensor B) | Camshaft/crankshaft correlation issue. |
| P0340 | Camshaft Position Sensor “A” Circuit (Bank 1 or Single Sensor) | Camshaft position sensor issue. |
| P0341 | Camshaft Position Sensor “A” Circuit Range/Performance (Bank 1 or Single Sensor) | Camshaft position sensor issue. |
| P0365 | Camshaft Position Sensor “B” Circuit (Bank 1) | Camshaft position sensor issue. |
| P0366 | Camshaft Position Sensor “B” Circuit Range/Performance (Bank 1) | Camshaft position sensor issue. |
| P0390 | Camshaft Position Sensor “B” Circuit (Bank 2) | Camshaft position sensor issue. |
| P0391 | Camshaft Position Sensor “B” Circuit Range/Performance (Bank 2) | Camshaft position sensor issue. |
| P0004 | Fuel Volume Regulator Control Circuit High | Fuel regulator issue. |
| P0005 | Fuel Shutoff Valve “A” Control Circuit Open | Fuel shutoff valve issue. |
| P000A | “A” Camshaft Position Slow Response Bank 1 | Camshaft timing issue. |
| P000B | “B” Camshaft Position Slow Response Bank 1 | Camshaft timing issue. |
| P000C | “A” Camshaft Position Slow Response Bank 2 | Camshaft timing issue. |
| P000D | “B” Camshaft Position Slow Response Bank 2 | Camshaft timing issue. |
| P0010 | “A” Camshaft Position Actuator Circuit Open Bank 1 | Camshaft actuator issue. |
| P0013 | “B” Camshaft Position Actuator Circuit Open Bank 1 | Camshaft actuator issue. |
| P0020 | “A” Camshaft Position Actuator Circuit Open Bank 2 | Camshaft actuator issue. |
| P0023 | “B” Camshaft Position Actuator Circuit Open Bank 2 | Camshaft actuator issue. |
| P0087 | Fuel Rail/System Pressure – Too Low | Fuel pressure issue. |
| P0088 | Fuel Rail/System Pressure – Too High | Fuel pressure issue. |
| P0089 | Fuel Pressure Regulator 1 Performance | Fuel pressure issue. |
| P0090 | Fuel Pressure Regulator 1 Control Circuit | Fuel pressure issue. |
| P0091 | Fuel Pressure Regulator 1 Control Circuit Low | Fuel pressure issue. |
| P0092 | Fuel Pressure Regulator 1 Control Circuit High | Fuel pressure issue. |
| P0093 | Fuel System Leak Detected – Large Leak | Fuel leak. |
| P0094 | Fuel System Leak Detected – Small Leak | Fuel leak. |
| P0095 | Intake Air Temperature Sensor 2 Circuit | Intake air temperature sensor issue. |
| P0096 | Intake Air Temperature Sensor 2 Circuit Range/Performance | Intake air temperature sensor issue. |
| P0097 | Intake Air Temperature Sensor 2 Circuit Low | Intake air temperature sensor issue. |
| P0098 | Intake Air Temperature Sensor 2 Circuit High | Intake air temperature sensor issue. |
| P0099 | Intake Air Temperature Sensor 2 Circuit Intermittent/Erratic | Intake air temperature sensor issue. |
| P0100 | Mass or Volume Air Flow Circuit | Mass air flow sensor issue. |
| P0102 | Mass or Volume Air Flow Circuit Low Input | Mass air flow sensor issue. |
| P0103 | Mass or Volume Air Flow Circuit High Input | Mass air flow sensor issue. |
| P0104 | Mass or Volume Air Flow Circuit Intermittent | Mass air flow sensor issue. |
| P0105 | Manifold Absolute Pressure/Barometric Pressure Circuit | MAP sensor issue. |
| P0106 | Manifold Absolute Pressure/Barometric Pressure Circuit Range/Performance | MAP sensor issue. |
| P0107 | Manifold Absolute Pressure/Barometric Pressure Circuit Low Input | MAP sensor issue. |
| P0108 | Manifold Absolute Pressure/Barometric Pressure Circuit High Input | MAP sensor issue. |
| P0109 | Manifold Absolute Pressure/Barometric Pressure Circuit Intermittent | MAP sensor issue. |
| P0110 | Intake Air Temperature Circuit | Intake air temperature sensor issue. |
| P0111 | Intake Air Temperature Circuit Range/Performance | Intake air temperature sensor issue. |
| P0112 | Intake Air Temperature Circuit Low Input | Intake air temperature sensor issue. |
| P0114 | Intake Air Temperature Circuit Intermittent | Intake air temperature sensor issue. |
| P0115 | Coolant Temperature Circuit | Coolant temperature sensor issue. |
| P0116 | Coolant Temperature Circuit Range/Performance | Coolant temperature sensor issue. |
| P0117 | Coolant Temperature Circuit Low Input | Coolant temperature sensor issue. |
| P0118 | Coolant Temperature Circuit High Input | Coolant temperature sensor issue. |
| P0119 | Coolant Temperature Circuit Intermittent | Coolant temperature sensor issue. |
| P0120 | Throttle/Pedal Position Sensor/Switch A Circuit | Throttle position sensor issue. |
| P0121 | Throttle/Pedal Position Sensor/Switch A Circuit Range/Performance | Throttle position sensor issue. |
| P0122 | Throttle/Pedal Position Sensor/Switch A Circuit Low Input | Throttle position sensor issue. |
| P0123 | Throttle/Pedal Position Sensor/Switch A Circuit High Input | Throttle position sensor issue. |
| P0124 | Throttle/Pedal Position Sensor/Switch A Circuit Intermittent | Throttle position sensor issue. |
| P0125 | Insufficient Coolant Temperature For Closed Loop Fuel Control | Coolant temperature issue. |
| P0126 | Insufficient Coolant Temperature For Stable Operation | Coolant temperature issue. |
| P0127 | Intake Air Temperature Too High | Intake air temperature issue. |
| P0129 | Barometric Pressure Too Low | Barometric pressure issue. |
| P0130 | O2 Sensor Circuit (Bank 1, Sensor 1) | Oxygen sensor issue. |
| P0131 | O2 Sensor Circuit Low Voltage (Bank 1, Sensor 1) | Oxygen sensor issue. |
| P0132 | O2 Sensor Circuit High Voltage (Bank 1, Sensor 1) | Oxygen sensor issue. |
| P0133 | O2 Sensor Circuit Slow Response (Bank 1, Sensor 1) | Oxygen sensor issue. |
| P0134 | O2 Sensor Circuit No Activity Detected (Bank 1, Sensor 1) | Oxygen sensor issue. |
| P0135 | O2 Sensor Heater Circuit (Bank 1, Sensor 1) | Oxygen sensor issue. |
| P0136 | O2 Sensor Circuit (Bank 1, Sensor 2) | Oxygen sensor issue. |
| P0137 | O2 Sensor Circuit Low Voltage (Bank 1, Sensor 2) | Oxygen sensor issue. |
| P0138 | O2 Sensor Circuit High Voltage (Bank 1, Sensor 2) | Oxygen sensor issue. |
| P0139 | O2 Sensor Circuit Slow Response (Bank 1, Sensor 2) | Oxygen sensor issue. |
| P0140 | O2 Sensor Circuit No Activity Detected (Bank 1, Sensor 2) | Oxygen sensor issue. |
| P0141 | O2 Sensor Heater Circuit (Bank 1, Sensor 2) | Oxygen sensor issue. |
| P0142 | O2 Sensor Circuit (Bank 1, Sensor 3) | Oxygen sensor issue. |
| P0143 | O2 Sensor Circuit Low Voltage (Bank 1, Sensor 3) | Oxygen sensor issue. |
| P0144 | O2 Sensor Circuit High Voltage (Bank 1, Sensor 3) | Oxygen sensor issue. |
| P0145 | O2 Sensor Circuit Slow Response (Bank 1, Sensor 3) | Oxygen sensor issue. |
| P0146 | O2 Sensor Circuit No Activity Detected (Bank 1, Sensor 3) | Oxygen sensor issue. |
| P0147 | O2 Sensor Heater Circuit (Bank 1, Sensor 3) | Oxygen sensor issue. |
| P0148 | Fuel Delivery Error | Fuel delivery issue. |
| P0149 | Fuel Timing Error | Fuel timing issue. |
| P0150 | O2 Sensor Circuit (Bank 2, Sensor 1) | Oxygen sensor issue. |
| P0151 | O2 Sensor Circuit Low Voltage (Bank 2, Sensor 1) | Oxygen sensor issue. |
| P0152 | O2 Sensor Circuit High Voltage (Bank 2, Sensor 1) | Oxygen sensor issue. |
| P0153 | O2 Sensor Circuit Slow Response (Bank 2, Sensor 1) | Oxygen sensor issue. |
| P0154 | O2 Sensor Circuit No Activity Detected (Bank 2, Sensor 1) | Oxygen sensor issue. |
| P0155 | O2 Sensor Heater Circuit (Bank 2, Sensor 1) | Oxygen sensor issue. |
| P0156 | O2 Sensor Circuit (Bank 2, Sensor 2) | Oxygen sensor issue. |
| P0157 | O2 Sensor Circuit Low Voltage (Bank 2, Sensor 2) | Oxygen sensor issue. |
| P0158 | O2 Sensor Circuit High Voltage (Bank 2, Sensor 2) | Oxygen sensor issue. |
| P0159 | O2 Sensor Circuit Slow Response (Bank 2, Sensor 2) | Oxygen sensor issue. |
| P0160 | O2 Sensor Circuit No Activity Detected (Bank 2, Sensor 2) | Oxygen sensor issue. |
| P0161 | O2 Sensor Heater Circuit (Bank 2, Sensor 2) | Oxygen sensor issue. |
| P0162 | O2 Sensor Circuit (Bank 2, Sensor 3) | Oxygen sensor issue. |
| P0163 | O2 Sensor Circuit Low Voltage (Bank 2, Sensor 3) | Oxygen sensor issue. |
| P0164 | O2 Sensor Circuit High Voltage (Bank 2, Sensor 3) | Oxygen sensor issue. |
| P0165 | O2 Sensor Circuit Slow Response (Bank 2, Sensor 3) | Oxygen sensor issue. |
| P0166 | O2 Sensor Circuit No Activity Detected (Bank 2, Sensor 3) | Oxygen sensor issue. |
| P0167 | O2 Sensor Heater Circuit (Bank 2, Sensor 3) | Oxygen sensor issue. |
| P0168 | Fuel Temperature Too High | Fuel temperature issue. |
| P0169 | Fuel Composition Sensor Circuit | Fuel composition sensor issue. |
| P0170 | Fuel Trim (Bank 1) | Fuel trim issue. |
| P0173 | Fuel Trim (Bank 2) | Fuel trim issue. |
| P0174 | System Too Lean (Bank 2) | Fuel mixture issue. |
| P0175 | System Too Rich (Bank 2) | Fuel mixture issue. |
| P0176 | Fuel Composition Sensor Circuit Range/Performance | Fuel composition sensor issue. |
| P0177 | Fuel Composition Sensor Circuit Low Input | Fuel composition sensor issue. |
| P0178 | Fuel Composition Sensor Circuit High Input | Fuel composition sensor issue. |
| P0179 | Fuel Composition Sensor Circuit Intermittent | Fuel composition sensor issue. |
| P0180 | Fuel Temperature Sensor A Circuit | Fuel temperature sensor issue. |
| P0181 | Fuel Temperature Sensor A Circuit Range/Performance | Fuel temperature sensor issue. |
| P0182 | Fuel Temperature Sensor A Circuit Low Input | Fuel temperature sensor issue. |
| P0183 | Fuel Temperature Sensor A Circuit High Input | Fuel temperature sensor issue. |
| P0184 | Fuel Temperature Sensor A Circuit Intermittent | Fuel temperature sensor issue. |
| P0185 | Fuel Temperature Sensor B Circuit | Fuel temperature sensor issue. |
| P0186 | Fuel Temperature Sensor B Circuit Range/Performance | Fuel temperature sensor issue. |
| P0187 | Fuel Temperature Sensor B Circuit Low Input | Fuel temperature sensor issue. |
| P0188 | Fuel Temperature Sensor B Circuit High Input | Fuel temperature sensor issue. |
| P0189 | Fuel Temperature Sensor B Circuit Intermittent | Fuel temperature sensor issue. |
| P0190 | Fuel Rail Pressure Sensor Circuit | Fuel rail pressure sensor issue. |
| P0191 | Fuel Rail Pressure Sensor Circuit Range/Performance | Fuel rail pressure sensor issue. |
| P0192 | Fuel Rail Pressure Sensor Circuit Low Input | Fuel rail pressure sensor issue. |
| P0193 | Fuel Rail Pressure Sensor Circuit High Input | Fuel rail pressure sensor issue. |
| P0194 | Fuel Rail Pressure Sensor Circuit Intermittent | Fuel rail pressure sensor issue. |
| P0195 | Engine Oil Temperature Sensor Circuit | Engine oil temperature sensor issue. |
| P0196 | Engine Oil Temperature Sensor Circuit Range/Performance | Engine oil temperature sensor issue. |
| P0197 | Engine Oil Temperature Sensor Circuit Low Input | Engine oil temperature sensor issue. |
| P0198 | Engine Oil Temperature Sensor Circuit High Input | Engine oil temperature sensor issue. |
| P0199 | Engine Oil Temperature Sensor Circuit Intermittent | Engine oil temperature sensor issue. |
| P0200 | Injector Circuit | Injector issue. |
| P0201 | Injector Circuit – Cylinder 1 | Injector issue. |
| P0202 | Injector Circuit – Cylinder 2 | Injector issue. |
| P0203 | Injector Circuit – Cylinder 3 | Injector issue. |
| P0204 | Injector Circuit – Cylinder 4 | Injector issue. |
| P0205 | Injector Circuit – Cylinder 5 | Injector issue. |
| P0206 | Injector Circuit – Cylinder 6 | Injector issue. |
| P0207 | Injector Circuit – Cylinder 7 | Injector issue. |
| P0208 | Injector Circuit – Cylinder 8 | Injector issue. |
| P0209 | Injector Circuit – Cylinder 9 | Injector issue. |
| P0210 | Injector Circuit – Cylinder 10 | Injector issue. |
| P0211 | Injector Circuit – Cylinder 11 | Injector issue. |
| P0212 | Injector Circuit – Cylinder 12 | Injector issue. |
| P0213 | Cold Start Injector 1 Circuit | Cold start injector issue. |
| P0214 | Cold Start Injector 2 Circuit | Cold start injector issue. |
| P0215 | Fuel Shutoff Solenoid Circuit | Fuel shutoff solenoid issue. |
| P0216 | Injection Timing Control Circuit | Injection timing issue. |
| P0217 | Engine Overtemp Condition | Engine overheating. |
| P0218 | Transmission Overtemp Condition | Transmission overheating. |
| P0219 | Engine Overspeed Condition | Engine overspeeding. |
| P0220 | Throttle/Pedal Position Sensor/Switch B Circuit | Throttle position sensor issue. |
| P0221 | Throttle/Pedal Position Sensor/Switch B Circuit Range/Performance | Throttle position sensor issue. |
| P0222 | Throttle/Pedal Position Sensor/Switch B Circuit Low Input | Throttle position sensor issue. |
| P0223 | Throttle/Pedal Position Sensor/Switch B Circuit High Input | Throttle position sensor issue. |
| P0224 | Throttle/Pedal Position Sensor/Switch B Circuit Intermittent | Throttle position sensor issue. |
| P0225 | Throttle/Pedal Position Sensor/Switch C Circuit | Throttle position sensor issue. |
| P0226 | Throttle/Pedal Position Sensor/Switch C Circuit Range/Performance | Throttle position sensor issue. |
| P0227 | Throttle/Pedal Position Sensor/Switch C Circuit Low Input | Throttle position sensor issue. |
