Vauxhall Workshop Service and Repair Manuals

Trouble Code

Information Sensor

Cause of Fault

Remedy in

F0: DATA LIST

No.

Trouble Code Storage when...

91

O2 SENSOR 2

CIRCUIT VOLTAGE HIGH

46, 48, 52, 54, 56

·   Oxygen sensor voltage greater than 1100 mV

     (short circuit to voltage)

·   Condition must be fulfilled for at least 2.5 s

Condition for approval of fault storage:

The fault is stored and the replacement value called up if the following conditions are fulfilled consecutively:

1.)   Coolant temperature higher than 70 °C / 158 °F

2.)   Condition 1.) fulfilled for 3 min

3.)   Load signal greater than 1.7 ms

4.)   After conditions 1.) to 3.) are fulfilled, waiting period of 5.1 s elapsed

5.)   Trouble codes 73 and 74 not recognized

Replacement values:

·   450 mV (oxygen sensor control switched off)