Error code
OBD2 P0113
OBD2P0113
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.
What it means
Intake Air Temperature Sensor 1 Circuit High.
Severity
moderateCan drive but performance may be affected.
Summary
P0113 indicates that the PCM is receiving an abnormally high voltage signal from the Intake Air Temperature (IAT) sensor, typically located in or near the air intake box.
Symptoms
- Engine misfires
- Poor fuel economy
- Check engine light
Common Causes
- Defective IAT sensor
- Wiring issues (open circuit, short to positive)
- ECM/PCM malfunction
Diagnosis
- Check resistance of the IAT sensor with a DVOM.
- Inspect wiring between the ECU and IAT sensor for continuity and shorts.
- Verify reference voltage at the IAT connector when key is on, engine off.
Fixes
- Replace defective IAT sensor or repair faulty wiring.
FAQ
What causes P0113?
P0113 is often caused by a malfunctioning IAT sensor or issues with the wiring connecting it to the ECU.
How do I diagnose P0113?
Use a DVOM to check resistance and voltage at the IAT sensor, inspect for open circuits or shorts in the wiring.
Not affiliated with OBD2. Answer summarized from the manufacturer's manual linked above; consult that source for the authoritative procedure.
More OBD2 codes
- P0100Mass or Volume Air Flow Circuit
- P0101Mass or Volume Air Flow Circuit Range/Performance
- P0102Mass or Volume Air Flow Circuit Low Input
- P0103Mass or Volume Air Flow Circuit High Input
- P0104Mass or Volume Air Flow Circuit Intermittent
- P0105Manifold Absolute Pressure/Barometric Pressure Circuit
- P0106Manifold Absolute Pressure/Barometric Pressure Circuit Range/Performance
- P0107Manifold Absolute Pressure/Barometric Pressure Circuit Low Input
- P0108Manifold Absolute Pressure/Barometric Pressure Circuit High Input
- P0109Manifold Absolute Pressure/Barometric Pressure Circuit Intermittent
- P0110Intake Air Temperature Sensor 1 Circuit
- P0111Intake Air Temperature Sensor 1 Circuit Range/Performance