Fuel and air

P007F — Charge Air Cooler Temperature Sensor Bank 1/Bank 2 Correlation

Severity: medium Drive with care, to a shop

What P007F means

The engine control module compares the charge air cooler (intercooler) temperature sensor signals from bank 1 and bank 2. With both sides working alike, the readings should be close. When the difference exceeds a set limit, the module logs a correlation fault and may reduce boost and power to protect the engine.

Symptoms

  • Check Engine light on
  • Reduced power
  • Hesitation or rough acceleration
  • Higher fuel consumption
  • Hissing or unusual intake noise under load
  • Inconsistent boost response

Possible causes

  1. Faulty charge air temperature sensor on one bank
  2. Open, shorted or corroded wiring or connector
  3. Boost or air leak in a hose or the intercooler
  4. Restricted or unevenly flowing intercooler
  5. ECM software or calibration issue (uncommon)

How to diagnose

  1. Scan all codes and freeze frame data and look for related boost or temperature codes
  2. Compare both sensors in live data on a cold engine; they should read nearly the same
  3. Inspect sensor connectors and wiring for corrosion, chafing or loose pins
  4. Test sensor resistance and the supply, signal and ground circuits against specs
  5. Inspect intake hoses, clamps and the intercooler for cracks, oil residue and leaks
  6. Pressure test the intake system for leaks
  7. Check the intercooler for debris or blockage on both the air and cooling sides
  8. Check for available ECM software updates for the vehicle

Common fixes

  • Replace the faulty charge air temperature sensor
  • Repair the wiring or replace the damaged connector
  • Fix leaks by replacing hoses, clamps or the intercooler
  • Clean or replace a clogged intercooler
  • Update or reflash the ECM software if the manufacturer offers it

Questions and answers

What does P007F mean?

It means the intercooler temperature sensors on the two engine banks report values that differ too much. The cause can be a bad sensor or wiring, or a real problem in the air intake path.

Can I drive with code P007F?

For a short time, if the car drives normally, but don't put it off. You may lose power and burn more fuel, and an air path problem could harm the turbocharger.

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.