Possible Causes
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NOTE:
- Monitor description. Engine idle speed greater than maximum deviation allowed during catalyst operation
- This DTC is set when the powertrain control module measures a signal that remains low when transitions are expected.
- Intake air system leakage
- Intake air system components incorrectly installed, loose or damaged pipework
- Engine crankcase breather system leakage
- Engine crankcase breather system components incorrectly installed