What Does P007D Mean?
This code indicates the charge air cooler temperature sensor signal voltage on bank 1 is above the maximum expected threshold (typically above 4.8-4.9V). For an NTC thermistor sensor, a high voltage reading corresponds to an extremely low indicated temperature or an open circuit. The ECM cannot determine actual charge air temperature and will substitute a default value, potentially allowing excessive boost that could cause detonation.
Common Causes
35%
Open circuit in the CAC temperature sensor wiring due to a broken wire, corroded connector pin, or disconnected plug
30%
Failed CAC temperature sensor with open thermistor element reading infinite resistance
20%
Poor ground connection on the sensor return wire preventing current flow through the thermistor
15%
Spread or backed-out terminals in the sensor connector creating an open circuit
Diagnostic Steps
1
Disconnect the CAC temperature sensor and jumper the signal and ground pins at the harness connector. If the voltage drops to near 0V, the wiring is intact and the sensor has an open thermistor.
2
Measure sensor resistance directly at the sensor terminals. At room temperature (68°F/20°C), it should read approximately 2,000-3,000 ohms. OL (open/infinite) confirms a failed sensor.
3
Verify the ground wire has continuity from the sensor connector back to the ECM sensor ground pin. Resistance should be less than 1 ohm.
4
Inspect connector terminals for proper tension, backing out, or corrosion. Ensure the connector lock tab is fully engaged and weatherpack seals are intact.
5
Check the 5V reference circuit at the sensor connector. If missing, other sensors on the same reference circuit may also be affected.
Estimated Repair Cost
$40 - $250
Parts + labor, varies by vehicle and location
This code indicates the charge air cooler temperature sensor signal voltage on bank 1 is above the maximum expected threshold (typically above 4.8-4.9V). For an NTC thermistor sensor, a high voltage reading corresponds to an extremely low indicated temperature or an open circuit. The ECM cannot dete...
The most common cause of P007D (Charge Air Cooler Temperature Sensor Circuit High Bank 1) is: Open circuit in the CAC temperature sensor wiring due to a broken wire, corroded connector pin, or disconnected plug
Typical repair costs for P007D range from $40 to $250, depending on the vehicle, location, and whether you do it yourself or go to a shop.
An open circuit defaults to a low temperature reading, which could allow the ECM to permit higher boost levels than appropriate. The ECM typically activates protective power limiting to prevent engine damage.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P007D to identify the root cause.
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Quick Info
Category
Powertrain
System
Turbocharger/Supercharger Boost Control System
Difficulty
Type
Generic (SAE)
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