Intake Air Temperature Sensor 2 Circuit Low Bank 1
The P0097 code indicates that the Intake Air Temperature (IAT) Sensor 2 circuit in Bank 1 is reporting a voltage lower than the expected range. This sensor measures the temperature of the air entering the engine and is typically located in the intake air duct or manifold. A low voltage condition can be caused by a faulty sensor, wiring issues, or a short to ground. This can affect the air-fuel mixture calculation, leading to performance issues.
01. Most Common Causes
- Faulty Intake Air Temperature Sensor 2
- Short to ground in the sensor circuit
- Open or damaged wiring/connector
- Corroded or loose electrical connections
- Faulty Engine Control Module (ECM) (rare)
02. Symptoms You Will Notice
- Check Engine Light illuminated
- Poor engine performance or hesitation
- Reduced fuel economy
- Rough idle or stalling
- Hard starting in cold weather
03. Step-by-Step Diagnosis
Step 1: Use an OBD2 scanner to confirm the code and check for additional codes.
Step 2: Visually inspect the IAT sensor 2 and its wiring for damage, corrosion, or loose connections.
Step 3: Measure the sensor's resistance with a multimeter and compare to manufacturer specifications.
Step 4: Check for a short to ground by disconnecting the sensor and measuring voltage at the harness connector.
Step 5: If all checks pass, test the ECM output or replace the sensor.
04. Commonly Affected Makes
05. Frequently Asked Questions
Is it safe to drive with this code?▼
It is generally safe to drive short distances, but the vehicle may experience reduced performance and fuel economy. Prolonged driving could lead to further issues, so it's best to diagnose and repair promptly.
How much does it cost to fix?▼
The cost typically ranges from $50 to $150, including parts and labor. The sensor itself is usually inexpensive, and labor is minimal if it's easily accessible.