Vauxhall Workshop Service and Repair Manuals

Trouble Code

Information Sensor

Cause of Fault

Remedy in

F0: DATA LIST

No.

Trouble Code Storage when...

74

MASS AIR FLOW

SENSOR VOLTAGE

HIGH

07

·   Engine speed lower than 6520 rpm

·   Mass air flow meter signal is greater than 435 kg / h

     (short circuit to voltage)

Note:

The fault can generally be expected to be caused by defects in the wiring.

Replacement values:

·   The control unit calculates for the load signal using a replacement characteristic curve depending on the engine speed and the throttle valve angle.

·   If the throttle valve potentiometer is also defective, the following replacement values are used for calculation:

     For engine speed lower than 1520 rpm with load signal = 2.5 ms

     For engine speed higher than 1520 rpm with load signal = 4.8 ms