DTC P0112: Intake Air Temperature (IAT) Sensor Circuit Low Input
- Connect scan tool to Data Link Connector (DLC). Turn ignition on. Select IAT sensor parameter on scan tool. If scan tool displays greater than 282°F (139°C), go to next step. If scan tool displays near ambient temperature, check for an intermittent problem. See TESTS W/O CODES article.
- Disconnect IAT sensor harness connector. If scan tool display drops to -40°F (-40°C) or less, replace IAT sensor. If scan tool display is not as specified, check Red/Blue wire for a short to Gray/Yellow wire (Brown wire on some models), or ground. Repair as necessary. If wire is okay, replace PCM and retest system.