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ME9 / P0021 00

Read the instructions below then start the fault diagnostic procedure.

Symptom: Malfunction Indicator Lamp

  P0021 00


Intake Cam Angle Bank 2, Control Failure

Fault symptom

Malfunction Indicator Lamp

On-board diagnosis

Type of diagnosis:

At engine start.

Enable criteria:

Rotational speed at least 1000 rpm.
No fault on the camshaft position sensor or solenoid and no chain fault.

Fault criteria:

The camshaft is not in locked mode during start.

Diagnostic help

Diagnosis regards:

Correct oil pressure is required for the cam phasing mechanism to operate. The wrong viscosity or the presence of air due to a low level can generate a diagnostic trouble code. The diagnostic tool contains a special function for checking camshaft control.

Functions in the diagnostic tool related to the fault:

Test value:
Intake Cam Angle Bank 2
Requested Intake Cam Angle Bank 2
Deviation from Requested Intake Cam Angle Bank 2
Intake Cam Angle Solenoid Bank 2

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