222 - Knock Control Test Pulse Signal Implausible

P1386 - KNOCK CONTROL TEST PULSE SIGNAL IMPLAUSIBLE

Diagnosis conditions
- Engine speed less than 5,600 rpm
- Knock control active
- Engine load greater than 45 %

Possible fault cause
- DME control module

NOTE: When a fault is stored, the ignition angle is retarded for all cylinders in the range in which knock control is active.

Diagnosis/Troubleshooting

Steps 1 - 2: