Diagnostic Aids
WARNING: This page is about a different variant/trim than selected.
- Certain aftermarket air filters may cause this DTC to set.
- Certain aftermarket air induction systems may cause this DTC to set.
- Modifications the air induction system may cause this DTC to set.
- An inaccurate MAF sensor, an intake air flow restriction, any unmetered air that enters the engine downstream of the MAF sensor or an air induction leak may cause this DTC to set. Refer to Charge Air Cooler Diagnosis (Induction System Air Leak Test) , Charge Air Cooler Diagnosis (Induction System Smoke Test) and Charge Air Cooler Diagnosis for Induction System Smoke Testing.
- An aftermarket exhaust system may reduce engine back-pressure excessively and cause this DTC to set.
- A faulty EGR valve that does not close fully, may set this DTC.
- Use a smoke generating device or a solution of dish soap and water in a spray bottle to pinpoint any suspected air leaks in the induction system and in the charge air cooler assembly.