Charge Air Cooler Temperature Sensor Circuit High Bank 1
The P007D code indicates that the Engine Control Module (ECM) has detected a voltage signal from the charge air cooler temperature sensor that is higher than the expected range. This sensor monitors the temperature of the air exiting the intercooler, and a high signal typically means the sensor is reading an abnormally high temperature or there is an electrical issue such as a short to voltage, open circuit, or faulty sensor. This can lead to incorrect air density calculations, affecting fuel trim and boost control.
01. Most Common Causes
- Faulty charge air cooler temperature sensor
- Short to voltage in sensor circuit
- Open or high resistance in sensor wiring or connector
- Corroded or damaged connector pins
- ECM software or hardware issue (rare)
02. Symptoms You Will Notice
- Check Engine Light illuminated
- Reduced engine power or limp mode
- Poor fuel economy
- Rough idle or hesitation during acceleration
- Possible black smoke from exhaust
03. Step-by-Step Diagnosis
Step 1: Scan for additional codes and freeze frame data to confirm conditions.
Step 2: Visually inspect the charge air cooler temperature sensor and its wiring for damage, corrosion, or loose connections.
Step 3: Using a multimeter, check sensor resistance at various temperatures and compare to manufacturer specifications.
Step 4: Check for voltage at the sensor connector (reference 5V and signal wire) to identify shorts or opens.
Step 5: If sensor and wiring are okay, test the ECM by backprobing the signal wire and monitoring voltage while varying sensor temperature.
04. Commonly Affected Makes
05. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended to drive long distances as the engine may enter limp mode, reducing power and potentially causing further damage. Short trips to a repair shop are acceptable.
How much does it cost to fix?▼
The cost typically ranges from $50 to $150 for a DIY sensor replacement, or $100 to $300 if professionally diagnosed and repaired, including parts and labor.