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P0100, P0102, P0103

Read the instructions below then start the fault diagnostic procedure.

Symptom: CHECK ENGINE lamp on. Limp home. Loss of performance. Cruise control does not work.

P0100, P0102, P0103


P0100 Mass Air Circuit Malfunction

P0102 Mass Air Flow Circuit. Low Input.

P0103 Mass Air Flow Circuit. High Input.



Fault symptoms


CHECK ENGINE lamp on.

Limp home.

Loss of performance.

Cruise control does not work.


Conditions

The following conditions apply for this DTC:


P0100: Signal at 0 rpm above or below 1.2 V and 0.8 V respectively for more than 15 seconds.

Fault criteria not fulfilled for P0102, P0103, P1636 or P1637.

P0102: Signal on control module sensor input less than -23 kg/h for more than 1.2 seconds. The diagnosis is performed between 0-5000 rpm.

Fault criteria not fulfilled for P1636 or P1637.

P0103: Signal on control module sensor input greater than 780 kg/h for more than 2 seconds. The diagnosis is performed between 0-5000 rpm.

Fault criteria not fulfilled for P1636 or P1637.


Diagnostic help

The control module uses 800 kg/h as a substitute value. The value on the diagnostic tool is the same as the substitute value.


Turns off boost pressure diagnosis.

Note

A fault in the control module female connector can cause a trouble code. Check the contact for a bent pin, oxidation and tightness of pins. See Difficult faults in PSG16 despite trouble code .