Failed charge air cooler temperature sensor; Damaged, corroded, or disconnected electrical connector at the sensor; Open or shorted wiring in the sensor circuit, including chafed harness insulation; Poor ground connection for the sensor circuit; Faulty powertrain control module, though this is uncommon; Charge air cooler restriction or blockage causing abnormal temperature readings; Aftermarket or incorrect sensor installed previously

DTC codes / P00xx · Fuel and air metering and auxiliary emission controls / P007A

P007ACharge Air Cooler Temperature Sensor Circuit Bank 1

Q: What does code P007A mean?

Charge Air Cooler Temperature Sensor Circuit Bank 1. P007A indicates that the powertrain control module has detected an out-of-range signal from the charge air cooler temperature sensor on bank 1, which monitors the temperature of the compressed intake air after it leaves the intercooler. The circuit voltage or resistance falls outside the expected range for the current operating conditions, so the computer flags the sensor circuit as faulty.

P007A indicates that the powertrain control module has detected an out-of-range signal from the charge air cooler temperature sensor on bank 1, which monitors the temperature of the compressed intake air after it leaves the intercooler. The circuit voltage or resistance falls outside the expected range for the current operating conditions, so the computer flags the sensor circuit as faulty.

SystemPowertrain

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyIntermediate

AreaFuel and air metering and auxiliary emission controls

Symptoms you may notice

Illumination of the check engine light, often with no other noticeable symptoms
Reduced engine power or limp mode under heavy acceleration or sustained load
Decreased fuel economy due to incorrect air density calculations
Rough idle or hesitation when the engine is cold or under light load
In rare cases, a noticeable loss of power accompanied by black smoke from the exhaust

Common causes, most likely first

Failed charge air cooler temperature sensor
Damaged, corroded, or disconnected electrical connector at the sensor
Open or shorted wiring in the sensor circuit, including chafed harness insulation
Poor ground connection for the sensor circuit
Faulty powertrain control module, though this is uncommon
Charge air cooler restriction or blockage causing abnormal temperature readings
Aftermarket or incorrect sensor installed previously

How to diagnose and fix it

Use an OBD-II scan tool to retrieve the freeze-frame data and verify the sensor reading against ambient and intake air temperatures
Visually inspect the sensor connector and harness for corrosion, loose pins, or physical damage
Measure the sensor resistance with a multimeter and compare it to the manufacturer's temperature-resistance chart
Check for continuity and short circuits in the signal and ground wires between the sensor and the powertrain control module
Test the reference voltage at the sensor connector with the key on and engine off
Replace the charge air cooler temperature sensor if electrical tests confirm it is out of specification
Clear the diagnostic trouble codes and perform a road test to confirm the repair and ensure the code does not return

What the charge air sensor reading hides

A charge air cooler temperature sensor that reads plausibly but inaccurately can cause drivability complaints without ever setting a code, so always compare its live data to ambient and manifold air temperature sensors.
Wiring harness chafing near the intercooler or along the engine mount is a frequent culprit that mimics a failed sensor, especially on vehicles with high mileage or recent front-end repairs.
The powertrain control module may substitute a default charge air temperature value when the sensor fails, masking the fault and allowing the engine to run almost normally until load increases.
A restricted or internally damaged charge air cooler can cause the sensor to report temperatures outside the expected range even when the sensor and wiring are fully functional.
Clearing the code without checking freeze-frame data often leads to a comeback because the original fault conditions are lost and the underlying issue remains.

Can I keep driving with P007A?

You can usually drive the vehicle short distances at moderate speeds, but avoid heavy acceleration or sustained high-load driving because incorrect charge air temperature readings can cause the engine to run rich or enter limp mode. Have the fault diagnosed promptly to prevent potential damage to the turbocharger or catalytic converter.

Tools that help

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Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.