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 affected HO2S Heater current parameter is less than 0.25 amps, or more than 1.375 amps (4.8L) or 3.125 amps (5.3L & 6.0L).
- The above condition is met for 10 seconds.