Conditions for Clearing the DTC
WARNING: This page is about a different car, the 2007 Isuzu i-370, 2007 GMC Canyon, and 2007 Chevrolet Colorado. 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 | Values | Yes | No |
|---|---|---|---|---|
| Schematic Reference: Engine Controls Schematics Connector End View Reference: Engine Controls Connector End Views or Powertrain Control Module Connector End Views |
||||
| 1 | Did you perform the Diagnostic System Check - Vehicle? | - | Go to Step 2 | Go to Diagnostic System Check - Vehicle |
| 2 | Observe the intake air temperature (IAT) sensor parameter with a scan tool. Is the IAT sensor parameter greater than the specified value? |
149°C (300°F) | Go to Step 4 | Go to Step 3 |
| 3 |
|
- | Go to Step 4 | Go to Testing for Intermittent Conditions and Poor Connections |
| 4 |
|
-39°C (-38°F) | Go to Step 6 | Go to Step 5 |
| 5 | Test the signal circuit of the IAT sensor for an intermittent short to ground or an intermittent short to the IAT low reference circuit. Refer to Circuit Testing
and to Wiring Repairs
. Did you find and correct the condition? |
- | Go to Step 10 | Go to Step 7 |
| 6 | Test for an intermittent and for a poor connection at the IAT sensor. Refer to Testing for Intermittent Conditions and Poor Connections
and to Connector Repairs
. Did you find and correct the condition? |
- | Go to Step 10 | Go to Step 8 |
| 7 | Test for an intermittent and for a poor connection at the powertrain control module (PCM). Refer to Testing for Intermittent Conditions and Poor Connections
and to Connector Repairs
. Did you find and correct the condition? |
- | Go to Step 10 | Go to Step 9 |
| 8 | Replace the MAF/IAT sensor. Refer to Mass Airflow Sensor/Intake Air Temperature Sensor Replacement
. Did you complete the replacement? |
- | Go to Step 10 | - |
| 9 | Replace the PCM. Refer to Control Module References
. Did you complete the replacement? |
- | Go to Step 10 | - |
| 10 |
|
- | Go to Step 2 | Go to Step 11 |
| 11 | Observe the Capture Info with a scan tool. Have any other DTCs not been diagnosed? |
- | Go to Diagnostic Trouble Code (DTC) List - Vehicle | System OK |