h25: Attempt to Generate Code 41/91
| Steps | _Key Off, wait 10 seconds
_HEGO disconnected _Jumper HEGO Signal circuit at the HEGO vehicle harness connector to battery negative post. _Rerun Engine Running Self-Test |
| Result | Is Code 41/91 present? |
| Direction | YES
Remove jumper. For engines with MAP sensor, GO to Continue. All others, GO to Continue NO Remove jumper. Reconnect HEGO sensor. Disconnect processor 60 pin connector. Inspect for damaged pins, loose wires, corrosion, etc. Service as necessary. If OK, replace processor. Rerun Quick Test. |
| Notes | Non-EEC areas could cause a Service Code 42/92/ Check for:
Fuel contaminated engine oil Ignition caused misfire (fouled spark plugs) CANP problems |
| Component | Heated Exhaust Gas Oxygen Sensor |
| Description | The HEGO sensor supplies the EEC with a signal that indicates a rich or lean condition during engine operation. |
| Location | Threaded into the turbo outlet elbow |
| Wire Colors | Dark Green with Purple stripe
Grey with Yellow stripe Black with Light Green stripe |
| Image |   "> |