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Home >> Chevrolet >> 2006 >> Uplander Base >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 3 (Engine Controls - 3.9L - DTC P0011 To P0420) >> DTC P0112 or P0113 >> Circuit/System Testing >> P0112

Circuit/System Testing: P0112

WARNING: This page is about a different variant/trim than selected.
  1. Turn ON the ignition, with the engine OFF.
  2. Disconnect the mass air flow (MAF)/IAT sensor. Observe the intake air temperature (IAT) sensor with a scan tool for -36°C (-33°F).
    • If more than -36°C (-33°F), test the signal circuit of the IAT sensor for a short to ground or a short to the IAT low reference circuit and repair as necessary. If all circuits test OK then replace the control module.
    • If less than -36°C (-33°F), replace the MAF/IAT sensor.
    • If IAT signal circuit tests OK, then replace the control module.
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