Diagnostic Trouble Code (DTC) Information

Diagnostic trouble code (DTC) information

Condition
The Engine control module (ECM) checks the function for quick catalytic converter warm-up. The catalytic converter can be warmed up quickly by increasing the throttle angle, changing the camshaft angle etc. for example. The Engine control module (ECM) checks the function for catalytic converter warm-up.
The Engine control module (ECM) calculates the difference between the requested energy applied for catalytic converter warm-up and the actual excess energy for catalytic converter warm-up.
The diagnostic trouble code (DTC) is stored if the control module detects that:
- The difference between applied energy for warm-up of the catalytic converter and the actual energy for warm-up of the catalytic converter is too great.
The control module's test for the diagnostic trouble code (DTC) starts in the event of:
- When starting the engine.
- Cold engine.
- Warming-up of catalytic converter started.

Note! The control module can only detect the fault once the test has been started and the diagnostic trouble code (DTC) is stored when the conditions are met.

Substitute value
- None.

Possible source
- Sticking throttle.
- Fault in the throttle.
- Blocked intake system.
- Clogged air filter.
- Sticking/slow throttle.
- Mechanical fault causes in the engine.

Fault symptom[s]
- Warning lights and chimes/Malfunction Indicator Light ("Check engine" light) indication/no indication