Charge Air Cooler Temperature Sensor Circuit Range/Performance Bank 1
The P007B code indicates that the Engine Control Module (ECM) has detected a signal from the charge air cooler temperature sensor that is outside the expected range or performance parameters for Bank 1. This sensor monitors the temperature of the air entering the engine after the intercooler. A faulty sensor, wiring issues, or a malfunctioning intercooler can cause this code. The ECM uses this data to adjust fuel delivery and ignition timing; an incorrect reading can lead to reduced performance and increased emissions.
1. Most Common Causes
- Faulty charge air cooler temperature sensor
- Open or shorted wiring or connector issues in the sensor circuit
- Damaged or clogged intercooler affecting air temperature
- ECM software or hardware failure (rare)
2. Symptoms You Will Notice
- Check Engine Light illuminated
- Reduced engine power or hesitation during acceleration
- Poor fuel economy
- Possible black smoke from exhaust due to rich mixture
3. Step-by-Step Diagnosis
Step 1: Use an OBD2 scanner to confirm the code and check for other related codes.
Step 2: Visually inspect the charge air cooler temperature sensor and its wiring for damage, corrosion, or loose connections.
Step 3: Test the sensor's resistance and voltage with a multimeter and compare to manufacturer specifications.
Step 4: Check the intercooler for leaks, blockages, or damage that could affect air temperature readings.
Step 5: If sensor and wiring are okay, clear the code and test drive to see if it returns; if it does, replace the sensor.
4. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended to drive long distances with this code as it can cause reduced engine performance 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.
5. Commonly Affected Makes
This is a generic OBD2 code, potentially applicable to any manufacturer using this diagnostic standard.