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 intake manifold after the intercooler. A faulty sensor, wiring issues, or a restricted intercooler can cause this code. The ECM uses this data to adjust fuel delivery and ignition timing; an incorrect reading can lead to reduced engine performance and increased emissions.
01. Most Common Causes
- Faulty charge air cooler temperature sensor
- Open or shorted wiring in the sensor circuit
- Poor electrical connection at the sensor connector
- Restricted or damaged charge air cooler (intercooler)
02. Symptoms You Will Notice
- Check Engine Light illuminated
- Reduced engine power or hesitation during acceleration
- Poor fuel economy
- Possible black smoke from exhaust (rich condition)
03. Step-by-Step Diagnosis
Step 1: Use an OBD2 scanner to confirm the code and check for related codes (e.g., P007C, P007D).
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 output with a multimeter and compare to manufacturer specifications.
Step 4: Check the charge air cooler for restrictions or damage that could affect airflow and temperature readings.
04. Commonly Affected Makes
05. Frequently Asked Questions
Is it safe to drive with this code?▼
It is generally safe for short distances, but prolonged driving may cause reduced performance and potential engine damage due to incorrect air-fuel mixture. It's best to diagnose and repair promptly.
How much does it cost to fix?▼
The cost typically ranges from $50 to $150 for parts and labor, depending on whether the sensor or wiring needs replacement. Diagnostic fees may be additional.