Error code

OBD2 P0097

OBD2P0097
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.

What it means

Intake Air Temperature Sensor 2 Circuit Low.

Severity

moderateThe vehicle can usually be driven, but performance issues may occur.

Summary

P0097 indicates that the second intake air temperature (IAT2) sensor is reporting an abnormally low voltage or resistance reading, which could be due to wiring issues or a faulty sensor itself. This sensor measures air temperature after compression in forced-induction engines.

Symptoms

  • Poor engine performance during acceleration
  • Engine hesitation

Common Causes

  • Wiring short to ground or poor connection at the IAT2 sensor connector
  • Faulty IAT2 sensor
  • Poor charge cooling leading to overheating and misinterpretation by ECM

Diagnosis

  1. Check the IAT2 sensor connector for proper seating and signs of damage
  2. Use a scan tool to monitor live data and compare IAT1 and IAT2 readings
  3. Perform resistance checks on the IAT2 sensor using a DVOM

Fixes

  • Repair or replace faulty wiring between ECM and IAT2 sensor
  • Replace the faulty IAT2 sensor

FAQ

Can P0097 be caused by a software issue?

Yes, some cases of P0097 may require an ECM reflash to correct programming issues.

What should I do if the sensor readings are normal but the code persists?

Check for intermittent problems or overheating issues and consult a mechanic if necessary.

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 →