Possible Causes
| Possible Causes |
|---|
| KNOCK SENSOR SIGNAL CIRCUIT SHORTED TO VOLTAGE OR ANOTHER CIRCUIT |
| KNOCK SENSOR RETURN CIRCUIT SHORTED TO VOLTAGE OR ANOTHER CIRCUIT |
| KNOCK SENSOR |
| POWERTRAIN CONTROL MODULE (PCM) |
Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding. Refer to PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .