Fuel and air

P007A — Charge Air Cooler Temperature Sensor Circuit, Bank 1

Severity: medium Drive with care, to a shop

What P007A means

The engine control unit monitors the sensor that measures air temperature after the charge air cooler (intercooler) on bank 1. That reading helps it calculate boost, ignition timing and fuel delivery. The code sets when the signal voltage is out of range or implausible, pointing to an open, a short or a failed sensor.

Symptoms

  • Check Engine light on
  • Reduced power and sluggish acceleration
  • Poor fuel economy
  • Hesitation or stumbling as boost builds
  • Limp mode on some vehicles
  • Rough idle

Possible causes

  1. Failed charge air temperature sensor
  2. Open or shorted wiring to the sensor
  3. Corroded, loose or damaged connector pins
  4. Oil or moisture contaminating the connector
  5. Rarely, a faulty PCM

How to diagnose

  1. Scan all codes and freeze-frame data, clear the code and see if it returns
  2. Inspect the sensor, connector and harness for damage, chafing, oil and corrosion
  3. With a scan tool, compare the sensor reading with intake air and coolant temperature on a cold engine; they should be close
  4. Unplug the sensor and check for 5 V reference and ground at the connector
  5. Test the signal and ground wires back to the PCM for opens and shorts to ground or voltage
  6. Measure sensor resistance and compare it with the factory chart at a known temperature
  7. Check for oil leaks from the turbo or intercooler that could be reaching the sensor

Common fixes

  • Replace the charge air temperature sensor
  • Repair or replace the damaged wiring
  • Clean or replace the connector and terminals
  • Reflash or replace the PCM only after everything else is ruled out

P007A on different brands

Ford · manuals
Ford uses the extended format P007A:16, meaning charge air cooler temperature sensor circuit low (bank 1); it describes the detected monitor condition, not a confirmed failed part.

Questions and answers

Can I drive with a P007A code?

Briefly, yes, but power may be limited. Avoid heavy loads and have the sensor circuit checked soon.

What most often causes P007A?

Usually the charge air temperature sensor itself or damaged wiring or a bad connector. Start by inspecting the connector and checking the sensor reading with a scan tool.

Does P007A mean I need a new PCM?

Almost never. A PCM fault is possible but rare, and it should only be considered after the sensor and wiring have been verified.

This is general information about the code. The meaning can differ between makes and models: a scan tool and the repair manual for your car will show the exact cause.