Loose, corroded or damaged connector at the charge air cooler temperature sensor; Chafed, stretched or heat-damaged wiring causing intermittent open circuit or short; Failing charge air cooler temperature sensor with an erratic output; Moisture, oil or coolant contamination in the connector or sensor; Poor reference voltage or earth supply shared with other sensors; Fault in the engine control unit input circuit or an outdated calibration, if confirmed by the manufacturer.

P007E

Charge Air Cooler Temperature Sensor Circuit Intermittent/Erratic 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
7E: FaultThe specific fault in that area

What it means

P007E means the engine control unit has detected an intermittent or erratic signal from the charge air cooler (intercooler) temperature sensor circuit on bank 1. The signal is jumping, dropping out or changing implausibly quickly compared with what the other temperature inputs and operating conditions would suggest. The exact sensor location and the number of sensors fitted depend on the engine.

Symptoms

Engine warning light on
Reduced power or limp mode under boost
Hesitation or poor throttle response when accelerating
Poor fuel economy
Occasional rough running or fluctuating boost
Fault appears and disappears intermittently

Possible causes

Loose, corroded or damaged connector at the charge air cooler temperature sensorlikely
Chafed, stretched or heat-damaged wiring causing intermittent open circuit or shortlikely
Failing charge air cooler temperature sensor with an erratic outputlikely
Moisture, oil or coolant contamination in the connector or sensorpossible
Poor reference voltage or earth supply shared with other sensorspossible
Fault in the engine control unit input circuit or an outdated calibration, if confirmed by the manufacturerrare

How to diagnose

Read the stored and pending codes and note any other temperature, boost or sensor supply codes
Review freeze frame data to see engine speed, load and temperatures when the fault set
Inspect the sensor, connector and wiring for damage, corrosion, moisture, oil or heat damage, and check the terminals for tightness
With the engine running, view the live charge air temperature and gently wiggle the connector and harness to see whether the reading jumps
Compare the live reading with intake air temperature and ambient temperature on a cold engine; they should be close
Check the sensor resistance against the manufacturer specification at a known temperature
Test the reference voltage, signal and earth circuits for continuity, shorts and voltage drop
Check for relevant technical service bulletins or calibration updates for the specific model and engine

How to fix

Clean, secure or replace the affected connector and terminals
Repair or replace damaged wiring in the sensor circuit
Replace the charge air cooler temperature sensor if its readings are erratic or out of specification
Rectify any source of moisture or oil contamination
Repair the shared supply or earth fault if other sensors are affected
Apply a manufacturer-approved software update only if a known calibration issue is confirmed

Can I keep driving?

Medium severity

The car can usually be driven for a short time, but power may be reduced and the fault could become permanent. Get it checked soon to avoid poor running and possible strain on the engine.

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