ME9 / P0506 00

Read the instructions below then start the fault diagnostic procedure.

Symptom: Malfunction Indicator Lamp

P0506 00

Fault symptom

Malfunction Indicator Lamp

On-board diagnosis

Type of diagnosis:

Continuous

Enable criteria:

Vehicle speed 0 km/h.

Coolant temperature above 75°C.

Intake air temperature above -10.5°C.

Secondary air pump must not be active.

Purge not active

Idling at least 5 seconds.

Fault criteria:

Engine speed below requested idling speed by more than 100 rpm for more than 10 s.

Diagnostic help

Diagnosis regards:

Blocked throttle, blocked air supply, short engine mechanical fault.

Misfiring when idling will also generate this diagnostic trouble code.

Functions in the diagnostic tool related to the fault:

Test value:

•	Tachometer

Miscellaneous:

•	Throttle Position Test

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