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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 255 (Engine Control System & Fuel - Hybrid (Hp2) 6.0L (LFA) - DTC P0700 To DTC P3449) >> DTC P2228 or P2229 >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2008 GMC Yukon and 2008 Chevrolet Tahoe. 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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