Conditions for Clearing the DTC
WARNING: This page is about a different car, the 2005 Buick LaCrosse and 2005 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.
- A current DTC Last Test Failed clears when the diagnostic runs and passes.
- A history DTC clears after 40 consecutive warm-up cycles, if no failures are reported by this or any other non-emission related diagnostic.
- Clear the DTC with a scan tool.
DTC P1112
| Step | Action | Yes | No |
|---|---|---|---|
| Schematic Reference: Engine Controls Schematics Connector End View Reference: Engine Controls Connector End Views or Powertrain Control Module (PCM) Connector End Views |
|||
| 1 | Did you perform the Diagnostic System Check - Vehicle? | Go to Step 2 | Go to Diagnostic System Check - Vehicle in Vehicle DTC Information |
| 2 | Observe the DTC Information with a scan tool. Is DTC P0112 set? |
Go to DTC P0112 | Go to Step 3 |
| 3 | Test the intake air temperature (IAT) signal circuit between the IAT sensor and the powertrain control module (PCM) for an intermittent short to ground. Refer to Testing for Intermittent Conditions and Poor Connections
and Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
Go to Step 4 | Go to Intermittent Conditions |
| 4 |
|
Go to Step 2 | Go to Step 5 |
| 5 | Observe the Capture Info with a scan tool. Are there any DTCs that have not been diagnosed? |
Go to Diagnostic Trouble Code (DTC) List - Vehicle in Vehicle DTC Information | System OK |