HomeTrouble CodesP0096

P0096 — Intake Air Temperature Sensor 2 Circuit Rangeperformance Bank 1

Generic OBD-II · all makesPowertrain (engine & transmission)

The P0096 code indicates that the engine control module has detected a signal from the Intake Air Temperature (IAT) Sensor 2 on Bank 1 that is outside the expected operating range or performance parameters. This sensor typically measures the air temperature after it has passed through a turbocharger or intercooler to help the computer calculate air density and fuel trim.

Symptoms

What causes it — most likely first

1. Faulty IAT Sensor 2

The sensor element has failed internally or become contaminated, sending an inaccurate voltage signal to the PCM.

2. Wiring Damage

Frayed, shorted, or broken wires in the sensor circuit causing signal interference or loss.

3. Connector Corrosion

Moisture or debris in the sensor connector leading to high resistance or poor electrical contact.

4. Intake System Leak

A leak in the charge air piping that allows ambient air to affect the sensor reading inconsistently.

5. PCM Failure

An internal fault in the engine control module's processing circuit for the IAT 2 input.

How it's diagnosed

  1. Scan the vehicle for all stored DTCs to see if other sensor codes are present.
  2. Perform a visual inspection of the IAT Sensor 2, its wiring harness, and the connector for physical damage.
  3. Measure the sensor's resistance using a multimeter to verify it matches the manufacturer's temperature-to-resistance specifications.
  4. Use a scan tool to monitor the live data stream and observe if the temperature reading fluctuates realistically as the engine warms or cools.
  5. Test the circuit for continuity and proper grounding between the sensor connector and the PCM pins.
  6. Check for vacuum or boost leaks in the intake tract that could be skewing temperature readings.

Code facts & related codes

SystemPowertrain (engine & transmission)
StandardizationSAE generic — identical on every make

Frequently asked

Can a dirty air filter trigger P0096?

It is unlikely. This code refers to the electrical performance or range of the sensor signal rather than a restriction in airflow.

Is it common for the PCM to be the cause of this code?

No. It is very rare for the PCM to fail in a way that triggers P0096; the issue is almost always found in the sensor or the wiring.

Will my car enter limp mode with this code?

Depending on the vehicle, the PCM may use a default temperature value to protect the engine, which can result in reduced power or limited RPMs.