P1386

P1386 - KNOCK SENSOR SYSTEM FAILURE





When Monitored and Set Condition

- When Monitored: After the Anti-knock control is shut off and the engine is at operating temperature.
- Set Condition: The Anti-knock control test has failed Ten consecutive times in a row.





Diagnostic Test

1. CHECK PCM FOR INTERNAL FAILURE DTC





NOTE: This DTC will not turn on the Check Engine light.

Turn the ignition on.

With the DRB III(R), erase PCM DTCs.

Turn the ignition off, then back on.

Monitor the DRB III(R) for this DTC.

With the DRB III(R), read PCM DTCs.

Did the DTC, (P1386) KNOCK SENSOR SYSTEM FAILURE, set again?

Yes

- Replace and program the Powertrain Control Module.
- Perform POWERTRAIN VERIFICATION TEST - VER 2. Powertrain Verification Test - Ver 2

No

- Go To 2

2. INTERMITTENT WIRING AND CONNECTORS

The condition that caused this DTC to set is currently not present. Inspect the related wiring harness for a possible intermittent condition.

NOTE: Check connectors - Clean/repair as necessary. Poor pin to terminal connections can set DTCs.

NOTE: Check for any Technical Service Bulletins that may apply.

Using the wiring diagram/schematic as a guide, inspect the wiring and connectors specific to this DTC. Wiggle the wires while checking for shorts and/or open circuits.

Were there any problems found?

Yes

- Repair as necessary.
- Perform POWERTRAIN VERIFICATION TEST - VER 2. Powertrain Verification Test - Ver 2

No

- The condition that caused this DTC to set is currently not present. Inspect the related wiring harness for a possible intermittent condition.