Charge Air Cooler Temperature Sensor Circuit Intermittent/Erratic Bank 1
The P007E code indicates that the Engine Control Module (ECM) has detected an intermittent or erratic signal from the charge air cooler temperature sensor on Bank 1. This sensor monitors the temperature of the air exiting the intercooler. An erratic signal can cause incorrect air density calculations, affecting fuel trim and ignition timing. Common causes include a faulty sensor, damaged wiring, poor electrical connections, or ECM issues.
1. Most Common Causes
- Faulty charge air cooler temperature sensor
- Damaged or corroded wiring/connectors
- Intermittent short or open in the sensor circuit
- ECM software or hardware issue
2. Symptoms You Will Notice
- Check Engine Light illuminated
- Reduced engine power or performance
- Poor fuel economy
- Possible rough idle or hesitation
3. Step-by-Step Diagnosis
Step 1: Use an OBD2 scanner to confirm the code and check for additional codes.
Step 2: Visually inspect the sensor and wiring for damage, corrosion, or loose connections.
Step 3: Test the sensor resistance and compare to manufacturer specifications.
Step 4: Check the sensor signal voltage at the ECM connector while monitoring for intermittent drops.
4. Frequently Asked Questions
Is it safe to drive with this code?▼
It is generally safe for short trips, but the erratic sensor reading can cause poor performance and reduced fuel economy. Prolonged driving may lead to drivability issues or increased emissions.
How much does it cost to fix?▼
The cost typically ranges from $50 to $150 for parts and labor, depending on the sensor price and accessibility. DIY replacement can be cheaper if you have the tools.
5. Commonly Affected Makes
This is a generic OBD2 code, potentially applicable to any manufacturer using this diagnostic standard.