Code Id Chart: Notes
TROUBLE CODE IDENTIFICATION CHART
| Code |
System Affected |
Probable Cause |
| 11 |
Crank Angle Sensor |
Loss of 1° or 120/180° signal |
| 12 |
Mass Airflow (MAF) Sensor |
MAF signal high or low |
| 13 |
Coolant Temperature Sensor |
Open or shorted signal circuit |
| 14 |
Vehicle Speed Sensor (VSS) |
No VSS signal |
| 21 |
No Ignition Reference Pulse |
Loss of primary signal |
| 22 |
Fuel Pump |
Open or shorted pump circuit |
| 23 |
Idle Switch |
Open signal circuit |
| 25 |
Idle Speed Control (AAC Valve) |
Open or shorted AAC circuit |
| 31 |
ECU |
Signals are beyond normal range |
| 32 |
EGR Sensor (Calif.) |
No EGR action |
| 33 |
Oxygen Sensor |
Open circuit or high O2 signal |
| 35 |
EGR Temperature Sensor (Calif.) |
Open or shorted signal circuit |
| 41 |
Air Temperature Sensor |
Open or shorted signal circuit |
| 43 |
Throttle Sensor |
Open or shorted signal circuit |
| 45 |
Injector Leak (Calif.) |
Leak at injector |
| 55 |
No Malfunction Recorded |
Normal condition (no faults detected) |