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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1384 (Engine Controls And Fuel - Hybrid (Hp2) 6.0L (LFA) - DTC O0700 To DTC P3449) >> DTC P2228 or P2229 >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2009 GMC Sierra and 2009 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Verify that the following DTCs are not set: P0641 or P0651.
  2. Ignition ON, observe the BARO parameter with a scan tool.
  3. Compare the BARO value to the range specified in the Altitude vs. Barometric Pressure table.
  4. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.
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