Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2004 Chevrolet Corvette Base, 2D Convertible, AutomaticFACTORY OEM SERVICE PROCEDURE
Engine Performance DTCS
ENGINE PERFORMANCE DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | DEFINITION |
|---|---|
| DTC P0068 | MAP/MAF - Throttle Position Correlation |
| DTC P0101 | Mass Air Flow (MAF) Sensor Performance |
| DTC P0102 | Mass Air Flow (MAF) Sensor Circuit Low Frequency |
| DTC P0103 | Mass Air Flow (MAF) Sensor Circuit High Frequency |
| DTC P0106 | Manifold Absolute Pressure (MAP) Sensor Performance |
| DTC P0107 | Manifold Absolute Pressure (MAP) Sensor Circuit Low Voltage |
| DTC P0108 | Manifold Absolute Pressure (MAP) Sensor Circuit High Voltage |
| DTC P0112 | Intake Air Temperature (IAT) Sensor Circuit Low Voltage |
| DTC P0113 | Intake Air Temperature (IAT) Sensor Circuit High Voltage |
| DTC P0116 | Engine Coolant Temperature (ECT) Sensor Performance |
| DTC P0117 | Engine Coolant Temperature (ECT) Sensor Circuit Low Voltage |
| DTC P0118 | Engine Coolant Temperature (ECT) Sensor Circuit High Voltage |
| DTC P0120 | Throttle/Pedal Position Sensor/Switch "A" Circuit |
| DTC P0125 | Engine Coolant Temperature (ECT) Insufficient for Closed Loop Fuel Control |
| DTC P0128 | Engine Coolant Temperature (ECT) Below Thermostat Regulating Temperature |
| DTC P0131 or P0151 | HO2S Circuit Low Voltage |
| DTC P0132 or P0152 | HO2S Circuit High Voltage |
| DTC P0133 or P0153 | HO2S Slow Response |
| DTC P0134 or P0154 | HO2S Circuit Insufficient Activity |
| DTC P0135, P0141, P0155, or P0161 | HO2S Circuit Insufficient Activity |
| DTC P0136 or P0156 | HO2S Circuit |
| DTC P0137 or P0157 | HO2S Circuit Low Voltage |
| DTC P0138 or P0158 | HO2S Circuit High Voltage |
| DTC P0140 or P0160 | HO2S Circuit Insufficient Activity |
| DTC P0171 or P0174 | Fuel Trim System Lean |
| DTC P0172 or P0175 | Fuel Trim System Rich |
| DTC P0200 | Injector Control Circuit |
| DTC P0220 | Throttle Position Sensor Circuit |
| DTC P0230 | Fuel Pump Relay Control Circuit |
| DTC P0300 | Engine Misfire Detected |
| DTC P0315 | Crankshaft Position System Variation Not Learned |
| DTC P0325 | Knock Sensor Module Performance |
| DTC P0327 or P0332 | Knock Sensor Signal Low |
| DTC P0335 | Crankshaft Position (CKP) Sensor Circuit |
| DTC P0336 | Crankshaft Position (CKP) Sensor Performance |
| DTC P0341 | Camshaft Position (CMP) Sensor Performance |
| DTC P0342 | Camshaft Position (CMP) Sensor Circuit Low Voltage |
| DTC P0343 | Camshaft Position (CMP) Sensor Circuit High Voltage |
| DTC P0351, P0352, P0353, P0354, P0355, P0356, P0357, P0358 | Ignition Coil Control Circuit |
| DTC P0410 | Secondary Air Injection (AIR) System |
| DTC P0412 | Control Circuit Mismatch |
| DTC P0418 | Secondary Air Injection (AIR) Pump Relay Control Circuit |
| DTC P0420 or P0430 | Catalyst System Low Efficiency |
| DTC P0442 | Evaporative Emission (EVAP) System Small Leak Detected |
| DTC P0443 | Evaporative Emission (EVAP) Purge Solenoid Control Circuit |
| DTC P0446 | Evaporative Emission (EVAP) Vent System Performance |
| DTC P0449 | Evaporative Emission (EVAP) Vent Solenoid Control Circuit |
| DTC P0452 | Fuel Tank Pressure Sensor Circuit Low Voltage |
| DTC P0453 | Fuel Tank Pressure Sensor Circuit High Voltage |
| DTC P0455 | Evaporative Emission System Leak Detected |
| DTC P0491 or P0492 | Secondary Air Injection (AIR) System |
| DTC P0496 | Evaporative Emission System High Purge Flow |
| DTC P0506 | Idle Air Control System RPM Lower Than Expected |
| DTC P0507 | Idle Air Control System RPM Higher Than Expected |
| DTC P0601, P0602, P0603, P0604, P0605, P0606, P0607, P1600, P1621, P1627, P1680, P1681, P1683, or P2610 | ECU Malfunction |
| DTC P0641 | Sensor Reference Voltage "A" Circuit/Open |
| DTC P0650 | Malfunction Indicator Lamp (MIL) Control Circuit |
| DTC P0651 | Sensor Reference Voltage "B" Circuit/Open |
| DTC P1111 | Intake Air Temperature (IAT) Sensor Circuit Intermittent High Voltage |
| DTC P1112 | Intake Air Temperature (IAT) Sensor Circuit Intermittent Low Voltage |
| DTC P1114 | Engine Coolant Temperature (ECT) Sensor Circuit Intermittent Low Voltage |
| DTC P1115 | Engine Coolant Temperature (ECT) Sensor Circuit Intermittent High Voltage |
| DTC P1125 | Accelerator Pedal Position (APP) System |
| DTC P1133 or P1153 | HO2S Insufficient Switching |
| DTC P1134 or P1154 | HO2S Transition Time Ratio |
| DTC P1380 | Misfire Detected - Rough Road Data Not Available |
| DTC P1381 | Misfire Detected - No Communication with Brake Control Module |
| DTC P1516 | Throttle Actuator Control (TAC) Module Throttle Actuator Position Performance |
| DTC P2101 | Throttle Actuator Control Motor Circuit Range/Performance |
| DTC P2108 | Throttle Actuator Control Module Performance |
| DTC P2120 | Throttle/Pedal Position Sensor/Switch "D" Circuit |
| DTC P2121 | hrottle/Pedal Position Sensor/Switch "D" Circuit Range/Performance |
| DTC P2125 | Throttle/Pedal Position Sensor/Switch "E" Circuit |
| DTC P2126 | Throttle/Pedal Position Sensor/Switch "E" Circuit Range/Performance |
| DTC P2130 | Throttle/Pedal Position Sensor/Switch "F" Circuit |
| DTC P2131 | Throttle/Pedal Position Sensor/Switch "F" Circuit Range Performance |
| DTC P2135 | Throttle/Pedal Position Sensor/Switch "A" / "B" Voltage Correlation |
| DTC U0107 | Lost Communications With Throttle Actuator Control (TAC) Module |
Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.