E39 / P0333 00

Read the instructions below then start the fault diagnostic procedure.

Symptom: Check Engine Performance loss.

P0333 00

Fault symptom

Check Engine

Performance loss.

On-board diagnosis

Type of diagnosis:

Continuous

Enable criteria:

Engine running more than 10 seconds.

Engine speed more than 400 rpm.

Fault criteria:

Circuit shorted to B+

System reaction to a fault:

The ignition is lowered to minimise the risk of engine damage.

Checking the wiring harness

Jiggle the wiring harness at several points to detect intermittent breaks or short circuits. Check also the connector for oxidation or loose pins.

Diagnostic help

Diagnosis regards:

Electrical fault in connecting leads or component.

Functions in the diagnostic tool related to the fault:

Test value:

Knock Sensor 2 Circuit Failure

Knock Retard Cyl 3

Knock Retard Cyl 4

(See also description of readings/activations in diagnostic tool)