On-Board Diagnostics

WARNING: This page is about a different car, the 2003 Saab 9-3 and 2002 Saab 9-3. However, it is still accessible from the selected car via links, so may be relevant.

Type of diagnosis:

Once per driving cycle. Interrupted when fault criteria fulfilled or OK reported. Restarts next driving cycle.

Enable criteria:

General condition for this diagnostic trouble code: Atmospheric pressure must exceed 72 kPa as well as coolant and intake air temperature must exceed -7°C.
Ignition of front catalyst: Engine running. Air mass flow has exceeded 5 g/s (aut 7 g/s) for an accumulate time of 120 sec. The air mass flow has exceeded 20 g/s for an accumulate time of 18 sec. No motor braking with fuel shut-off for more than 10 sec. No idling longer than 40 sec.

Assessment of catalytic converter: Longer than 200 sec. since start. Coolant temperature above 70°C. Vehicle speed 40-115 km/h. Accelerator pedal depressed. Engine speed 1270-2540 RPM (auto. 1200 -2100 RPM). Engine load 100 -500 mg/c. Oxygen sensor 2 voltage changes corrected with respect to load and engine speed and accumulated for during approved voltage periods for oxygen sensor 1 *). When the voltage changes have been corrected and accumulated for 20 sec., their average value is calculated.

*) Accepted periods have 30-80 % pulse ratio (+trigger).

Fault criteria:

Mean value of voltage transitions exceeding a calibrated value.

Dependents:

P0100, P0102 , P0103 , P0115 , P0116 , P0117 , P0118 , P0119 , P0131 , P0132 , P0134 , P0138 , P0140 , P0336 , P0337 , P0501 , P0502 , P1133 , All throttle faults.

System reaction to a fault:

None.

OK report:

Diagnosis performed once and fault criteria not fulfilled.

Fault handling: (For more information, see FAULT HANDLING III, OTHER EMISSION-RELATED COMPONENTS AND FUNCTION ).

Type III.