Charge Air Cooler Temp Sensor Circuit High
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 voltage typically means the sensor is reading an extremely low temperature or there is an open circuit. Common causes include a faulty sensor, wiring issues, or a poor electrical connection. This can lead to incorrect air-fuel mixture and potential engine performance problems.
1. Most Common Causes
- Faulty charge air cooler (CAC) temperature sensor (internal open circuit)
- Open or broken signal wire in the sensor circuit
- Damaged, corroded, or disconnected sensor connector
- 5V reference circuit shorted to battery voltage
- Internal PCM failure (uncommon)
2. Symptoms You Will Notice
- Check Engine Light illuminated
- Reduced engine power or performance
- Poor fuel economy
- Possible black smoke from exhaust
3. Step-by-Step Diagnosis
Step 1: Scan for additional codes and record freeze frame data.
Step 2: Visually inspect the sensor and wiring for damage or corrosion.
Step 3: Test sensor resistance and compare to specifications; replace if out of range.
Step 4: Check for voltage and ground at sensor connector; repair wiring if necessary.
4. 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 fuel economy. 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 the cause and vehicle model.
5. Commonly Affected Makes
This is a generic OBD2 code, potentially applicable to any manufacturer using this diagnostic standard.