E39 / P0331 00
Read the instructions below then
start the fault diagnostic procedure.
Symptom: Check Engine
Performance loss.
Knock Sensor Cyl. 3-4, Performance Problem
Fault symptom
Check Engine
Performance loss.
On-board diagnosis
Type of diagnosis:
Enable criteria:
| Engine running more than 10 seconds. |
Fault criteria:
| Excessive Engine Knock Detected |
System reaction to a fault:
| The ignition is lowered to minimise the risk of engine damage. |
Diagnostic help
Diagnosis regards:
| The diagnostic trouble code is generated with an incorrectly mounted knock sensor. |
| Electrical fault in connecting leads or component. |
Functions in the diagnostic tool related to the fault:
| Knock Sensor 2 Circuit Failure |
| (See also description of readings/activations in diagnostic tool) |
