SAAB WIS ONLINE

Fault Handling, Fuel System, EmissionRelated Misfire

Fault Handling, Fuel System, Emission Related Misfire

A diagnostic trouble code is generated when the fault criteria for closed loop, adaptation or emission-related misfiring are satisfied. To facilitate fault diagnosis a special code is generated at the same time if there is less than 10 litres of fuel in the tank.

In order for the diagnostic trouble code to be cleared without further action, as well as any special code for low fuel level that may also have been generated, 1 driving cycle carried out under the same conditions as when the fault first occurred, or 80 driving cycles without the fault recurring, must be completed.

The CHECK ENGINE lamp (MIL) will light up if the fault occurs again within 80 drive cycles.

For the CHECK ENGINE lamp (MIL) to go out by itself, 3 consecutive driving cycles carried out under similar conditions as when the fault first occurred must be completed without the fault recurring.

For the diagnostic trouble code to be cleared, as well as any special code for low fuel level that may also have been generated, 40 faultless warm-up cycles must also be completed.


1. Fault criteria for fuel trim or emission related misfire fulfilled.


2. Fault code is set. In case of low fuel level a code is set for this as well.

3. Same fault occurs within 80 drive cycles.

4. CHECK-ENGINE light on

5. Fault does not occur in 3 consecutive driving cycles with similar conditions as when the fault first occurred.

6. CHECK-ENGINE light off

7. and

8. Fault does not occur in 40 warm-up cycles

9. Fault code erased

10. Fault does not occur in 1 driving cycle with similar conditions as when the fault first occurred.