Error code

OBD2 P0114

OBD2P0114
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.

What it means

Intake Air Temperature Sensor 1 Circuit Intermittent.

Severity

moderateCan drive, but performance may be affected and fuel efficiency could decrease.

Summary

P0114 indicates an intermittent issue with the Intake Air Temperature Sensor 1 circuit, which can cause inconsistent readings in the sensor signal.

Symptoms

  • Engine misfires
  • Poor fuel economy
  • Check engine light

Common Causes

  • Wiring issues or poor connections
  • Faulty IAT sensor
  • Contaminated sensor due to dirt or debris
  • Improper installation of the sensor

Diagnosis

  1. Check resistance across IAT sensor terminals with a DVOM.
  2. Verify reference voltage (5V) at the connector when disconnected from ECU.
  3. Inspect wiring for corrosion or damage between ECU and sensor.

Fixes

  • Replace faulty Intake Air Temperature Sensor

FAQ

What causes P0114?

Common causes include wiring issues, poor connections, a defective IAT sensor, or contamination of the sensor.

How do I diagnose P0114?

Use a DVOM to check resistance and voltage at the IAT sensor connector. Also inspect for any physical damage or corrosion in the wiring harness.

View source

Not affiliated with OBD2. Answer summarized from the manufacturer's manual linked above; consult that source for the authoritative procedure.

More OBD2 codes

All OBD2 codes →Search more codes →