Diagnostic Aids

WARNING: This page is about a different car, the 2016 Cadillac ATS. However, it is still accessible from the selected car via links, so may be relevant.

Any condition that can cause the MAF, MAP, turbocharger boost, and throttle position sensors to be shifted in value may cause this DTC to set
Any type of contamination on the either of the two MAF sensor heating elements will degrade the proper operation of the sensor(s). Certain types of contaminants act as a heat insulator, which will impair the response of the sensor to air flow changes. Water or snow can create the opposite effect, and cause the signal to increase rapidly.
Certain aftermarket air filters may cause this DTC to set.
Certain aftermarket air induction systems may cause this DTC to set.
Modifications to the air induction system may cause this DTC to set.