Automotive Repair

1994 Chevrolet Diagnostic Codes


Chevrolet Diagnostic Trouble Codes for Model of year 1994


 13  Open Oxygen Sensor Circuit
 14  Coolant Temperature Sensor (High Temp Indicated)
 15  Coolant Temperature Sensor (Low Temp Indicated)
 21  Throttle Position Sensor (Signal Voltage High)
 22  Throttle Position Sensor (Signal Voltage Low)
 23  Manifold Air Temperature (MAT) Low Temp Indicated
 24  Vehicle Speed Sensor (VSS) Circuit
 25  Manifold Air Temperature (MAT) High Temp Indicated
 32  Exhaust Gas Recirculation (EGR) Circuit
 33  Manifold Absolute Pressure Sensor Circuit (High Sig.)
 34  Manifold Absolute Pressure Sensor Circuit (Low Sig.)
 35  Idle Air Control (IAC)
 41  Cylinder Select Error
 42  Ignition Control (IC) Circuit
 43  Knock Sensor (KS) Circuit
 44  Oxygen Sensor Circuit (Lean Exhaust Indicated)
 45  Oxygen Sensor Circuit (Rich Exhaust Indicated)
 51  EEPROM or ECM Failure
 53  System Voltage Overcharge
 54  Fuel Pump Circuit (Low Voltage)
 55  ECM Error
 61  Degraded Oxygen Sensor
 62  Transaxle Gear Switch Signal Circuit
 63  A/C Refrigerant Pressure Sensor Circuit





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