Table 2, Trouble Codes-Trouble Code No.73 Air Flow Sensor Voltage Low Opel Frontera A

Table 2, Trouble Codes

SENSOR VOLTAGE

· Engine speed higher than 520 rpm

· Mass air flow sensor signal less than 3 kg / h (short circuit to ground)

Note:

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

Replacement value:

· The control unit refers to a characteristic curve to find a replacement value for the load signal which depends 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 less than 1520 rpm with load a load signal of 2.5 ms;