Common Checks
- Inspect the IAT or combined MAF/IAT connector for corrosion, loose pins, or an unplugged sensor.
- Check for damaged wiring near the airbox or intake tube.
- Compare scan-tool intake temperature to ambient temperature on a cold engine.
Diagnostic trouble code
P0113 Intake Air Temperature Sensor Circuit High
The PCM sees an intake-air-temperature signal that is higher than the normal circuit range.
Air Metering & Sensor Input CodesCommon Repairs
- Reconnect or repair the IAT/MAF wiring.
- Replace the IAT or combined MAF/IAT sensor only after wiring and connector checks pass.
Mustang Notes
- This code is common after intake work when the IAT/MAF connector is left loose.
Model-Year Applicability
Listed for 1996 and newer traditional gasoline Mustang pages in this first-pass catalog. Engine, calibration, and Ford-specific codes may narrow that range as more service data is added.