Conditions For Setting DTC
WARNING: This page does not describe the selected car, but rather 13 other vehicles, including the 2003 Hummer H2, 2003 GMC Yukon XL, 2003 GMC Yukon, 2003 GMC Sierra, and 2003 GMC Cab & Chassis Sierra. However, it is still accessible from the selected car via links, so may be relevant.
- The PCM detects that the difference between the actual airflow (MAF) and the Speed Density calculated air flow is greater than expected.
- All of the above conditions met for less than 1 second.