Conditions

Three Way Catalytic Converter. Malfunction.





Fault symptoms
- Market US/CA: CHECK ENGINE

On-Board Diagnostics

Type of diagnosis:
- Once per driving cycle. Interrupted when fault criteria fulfilled or OK reported. Restarts next driving cycle.

Enable criteria:
- General conditions for this trouble code: Atmospheric pressure must exceed 72 kPa and the engine coolant and intake air temperature must exceed -7 °C.

- Ignition of three way catalytic converter: Engine running. Air mass flow has exceeded 6 g/s for 120 sec accumulative time. Air mass flow has exceeded 24 g/s for 18 sec accumulative time. No engine braking with fuel shut-off that is longer than 10 sec. No idling period longer than 40 sec.

- Evaluation of three way catalytic converter: More than 200 sec since start. Coolant temperature above 70 °C. Speed 40 - 115 km/h. Accelerator pedal depressed. Engine speed 1100 - 2300 rpm. Engine load 90 - 130 mg/c. Voltage transitions in oxygen sensor 2 are corrected with regards to load and engine speed and are accumulated under approved voltage periods for oxygen sensor 1*). When the voltage transitions have been corrected and accumulated for 20 sec the mean value of these 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, P0116, P0117, P0118, P0131, P0132, P0134, P0138, P0140, P0336, P0337, P0501, P0502, All throttle faults.

System reaction to a fault:
- None.

OK report:
- Diagnosis performed once and fault criteria not fulfilled.

Fault handling: Fault Handling III, Other Emission-Related Comp. & Function
- Type III.

Diagnostic help
The capacity of the catalyst can be reduced temporarily or permanently for the following reason
- Lead or sulphur in the fuel.
- Fuel additives.
- Engine oil additives.

Diagnostic tool functions related to this fault are:
- Diagnostic status for the diagnosis.

See also the description of test values under "Fault diagnosis, general" for more information.
Tech 2 Menu Structure, DTC Menu, Read Value, Activate, Sys Info

Proceed to Diagnostic Procedures Check Additional Diagnostic Trouble Codes In the Trionic System