Faulty charge air cooler temperature sensor (internal open circuit or drifted reading); Damaged, chafed or broken wiring to the sensor, giving an open circuit or short to voltage; Corroded, loose or contaminated sensor connector terminals; Sensor signal wire shorted to a 5 volt or battery supply elsewhere in the harness; Poor sensor ground connection or a fault in the shared sensor ground circuit; Fault inside the engine control unit.

P007D

Charge Air Cooler Temperature Sensor Circuit High Bank 1.

Generic
Powertrain
Generic code
Medium severity

How this code is built

P: SystemPowertrain
0: Defined bySAE, the same on every car
0: AreaFuel and air metering, auxiliary emission controls
7D: FaultThe specific fault in that area

What it means

P007D means the engine control unit has seen a voltage on the charge air cooler temperature sensor circuit for Bank 1 that is higher than expected. A high voltage reading usually points to an open circuit, a short to a voltage supply, or a failed sensor, and it can read as an extremely cold air temperature. The control unit may then make poor boost and fuelling decisions or limit performance.

Symptoms

Engine warning light on
Reduced power or the car going into limp mode
Poor or inconsistent boost response
Rough running or hesitation under load
Higher fuel consumption
Hard starting or poor running in cold or hot conditions

Possible causes

Faulty charge air cooler temperature sensor (internal open circuit or drifted reading)likely
Damaged, chafed or broken wiring to the sensor, giving an open circuit or short to voltagelikely
Corroded, loose or contaminated sensor connector terminalslikely
Sensor signal wire shorted to a 5 volt or battery supply elsewhere in the harnesspossible
Poor sensor ground connection or a fault in the shared sensor ground circuitpossible
Fault inside the engine control unitrare

How to diagnose

Read all stored codes and freeze frame data, noting engine temperature, load and ambient conditions when the fault set, and check for related intake air or boost sensor codes
View live data for the charge air cooler temperature and compare it with the intake air temperature and ambient temperature on a cold engine; an implausible value such as a very low reading suggests an open circuit
Inspect the sensor, its connector and the wiring for damage, heat damage, chafing, oil contamination, corrosion and bent or pushed-back terminals
Unplug the sensor and check the live reading; a value that stays at the extreme high end of the range points to a circuit fault, while a plausible response to a jumper or resistor suggests the sensor itself
With the connector disconnected and ignition on, check the reference voltage and ground at the harness against the manufacturer's wiring diagram
Test the sensor resistance against the manufacturer's temperature table, as the values depend on the model and sensor type
Check the wiring for continuity and for short to voltage between the sensor and the control unit, wiggling the harness while monitoring live data
Confirm the position of the Bank 1 sensor on the specific engine, as the layout varies between models

How to fix

Replace the charge air cooler temperature sensor if its resistance or response is out of specification
Repair or replace damaged wiring, including any open circuit or short to voltage found
Clean or repair the connector terminals, or replace the connector if corroded or damaged
Restore a good sensor ground or reference circuit as shown by the wiring diagram
Where all wiring and the sensor test correctly, have the control unit checked and repaired or replaced as the manufacturer advises

Can I keep driving?

Medium severity

The car can usually be driven for a short time, but fix it soon as the control unit may limit power and boost control could be poor. Avoid heavy loads or towing until it is repaired.

Guide written by AI from the code's definition. Confirm with a diagnosis before replacing parts.