Intake Air Temperature Sensor 2 Circuit Range/Performance Bank 1
The P0096 code indicates that the Engine Control Module (ECM) has detected a performance or range issue with the Intake Air Temperature (IAT) Sensor 2 circuit on Bank 1. This sensor monitors the temperature of the air entering the intake manifold after the intercooler (in turbocharged engines) or in the intake duct. The ECM compares the sensor's reading to expected values based on other inputs like engine coolant temperature and mass airflow. A fault can cause incorrect air density calculations, affecting fuel trim and ignition timing.
1. Most Common Causes
- Faulty or internally worn IAT sensor 2
- Corroded, oxidized, or poor connection at the IAT sensor 2 connector or wiring
- Short to ground or reference voltage in the IAT sensor 2 signal circuit
- Open or intermittent circuit in the wiring between the IAT sensor 2 and the PCM
- IAT sensor 2 integrated into the MAF sensor with internal failure (depending on vehicle design)
2. Symptoms You Will Notice
- Check Engine Light illuminated
- Poor fuel economy
- Rough idle or hesitation
- Possible black smoke from exhaust (rich mixture)
3. Step-by-Step Diagnosis
Step 1: Scan for codes and record freeze frame data.
Step 2: Visually inspect IAT sensor 2 and its connector for damage or corrosion.
Step 3: Compare IAT sensor 2 reading with IAT sensor 1 (if equipped) using a scan tool; readings should be similar at cold start.
Step 4: Test sensor resistance at different temperatures using a multimeter and compare to manufacturer specs.
Step 5: Check wiring for continuity, shorts, or opens between sensor and ECM.
4. Frequently Asked Questions
Is it safe to drive with this code?▼
It is generally safe for short distances, but prolonged driving may cause poor performance, reduced fuel economy, and potential damage to the catalytic converter due to incorrect air-fuel mixture.
How much does it cost to fix?▼
The cost typically ranges from $50 to $150 for a DIY sensor replacement, or $100 to $250 if professionally diagnosed and repaired, including parts and labor.
5. Commonly Affected Makes
This is a generic OBD2 code, potentially applicable to any manufacturer using this diagnostic standard.