Intake Air Temperature Sensor 1 Circuit Intermittent/Erratic Bank 2
The P00AE code indicates that the Engine Control Module (ECM) has detected an intermittent or erratic signal from the Intake Air Temperature (IAT) sensor 1 on Bank 2. This sensor measures the temperature of the incoming air to help the ECM adjust fuel delivery and ignition timing. An erratic signal can cause incorrect air/fuel mixture, leading to performance issues. Common causes include a faulty IAT sensor, damaged wiring or connectors, or a poor electrical connection.
01. Most Common Causes
- Faulty Intake Air Temperature sensor
- Damaged or corroded wiring/connectors
- Poor electrical connection at sensor
- ECM software or hardware issue (rare)
02. Symptoms You Will Notice
- Check Engine Light illuminated
- Rough idle or hesitation during acceleration
- Poor fuel economy
- Black smoke from exhaust (rich mixture)
03. Step-by-Step Diagnosis
Step 1: Scan for codes and record freeze frame data.
Step 2: Visually inspect IAT sensor and wiring for damage or corrosion.
Step 3: Test sensor resistance with a multimeter and compare to specifications.
Step 4: Check for intermittent connection by wiggling wiring harness while monitoring sensor signal.
04. Commonly Affected Makes
05. Frequently Asked Questions
Is it safe to drive with this code?▼
It is generally safe for short trips, 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 parts and labor, depending on the vehicle and whether the sensor or wiring needs replacement.