Diagnostic Trouble Code Definition
DIAGNOSTIC TROUBLE CODE IDENTIFICATION
| Code |
System Affected |
Probable Cause |
| MIL Never On |
MIL |
MIL Circuit Fault |
| MIL Always On |
ECM |
No Signal To ECM |
| 1 |
Heated Oxygen Sensor (HO2S) |
Problem In HO2S Circuit |
| 3 |
MAP Sensor |
Electrical Problem In MAP Sensor |
| 4 |
Crank Angle Sensor (CKP) |
Open Or Shorted Signal Circuit |
| 6 |
Engine Coolant Temperature (ECT) Sensor |
Open Or Shorted Signal Circuit |
| 7 |
Throttle Position (TP) Sensor |
Open Or Shorted Signal Circuit |
| 8 |
Crank Angle Sensor (TDC) |
Open Or Shorted Signal Circuit |
| 9 |
Crank Angle Sensor (CYP) |
Open Or Shorted Signal Circuit |
| 10 |
Intake Air Temperature (IAT) |
Problem With Sensor |
| 12 |
EGR System |
No EGR Action |
| 13 |
Barometric Pressure (BARO) Sensor |
Problem With PA Circuit |
| 14 |
Idle Air Control (IAC) Valve |
Open Or Shorted Signal Circuit |
| 15 |
Ignition Output Signal |
Electrical Problem In Signal Circuit |
| 16 |
Fuel Injector |
Problem In Fuel Injector Circuit |
| 17 |
Vehicle Speed Sensor (VSS) |
Open Or Shorted Signal Circuit |
| 20 |
Electrical Load Detector (ELD) |
Problem With ELD Circuit |
| 21 |
VTEC Solenoid Valve |
Problem With VTEC Spool Solenoid Circuit |
| 22 |
VTEC Pressure Switch |
Problem In VTEC Oil Pressure Switch Circuit |
| 30 |
A/T FI Signal A |
A/T FI Signal A Circuit Fault |
| 31 |
A/T FI Signal B |
Problem In A/T Control Unit And ECM Circuit |
| 41 |
Heated Oxygen Sensor (HO2S) Heater |
Problem With HO2S Circuit or Fuel System |
| 43 |
Fuel Supply System (Except D15Z1 Engine) |
HO2S Circuit Fault |