Faulty charge air cooler temperature sensor on bank 2 (open or short circuit, or drift); Damaged, chafed or heat-affected wiring to the sensor; Corroded, loose or contaminated connector pins at the sensor or control unit; Oil, moisture or debris contaminating the sensor or its connector from a leaking or oily intake tract; Fault in the sensor reference voltage or ground supply shared with other sensors; Faulty engine control unit input circuit.

P00A0

Charge Air Cooler Temperature Sensor Circuit Bank 2.

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
A0: FaultThe specific fault in that area

What it means

P00A0 means the engine control unit has found a fault in the charge air cooler temperature sensor circuit on bank 2. The sensor reports the temperature of the compressed intake air after the intercooler. The code sets when the signal is outside the expected range, is erratic, or does not match other temperature readings. Which sensor is bank 2 and where it sits depends on the engine, so check the model-specific information.

Symptoms

Engine warning light on
Reduced power or the engine going into a limp or protection mode
Poor throttle response or hesitation under boost
Rough running or slightly higher fuel consumption
Possible black smoke or altered boost behaviour under load

Possible causes

Faulty charge air cooler temperature sensor on bank 2 (open or short circuit, or drift)likely
Damaged, chafed or heat-affected wiring to the sensorlikely
Corroded, loose or contaminated connector pins at the sensor or control unitlikely
Oil, moisture or debris contaminating the sensor or its connector from a leaking or oily intake tractpossible
Fault in the sensor reference voltage or ground supply shared with other sensorspossible
Faulty engine control unit input circuitrare

How to diagnose

Read all stored and pending codes and note the freeze frame data, including engine load, coolant temperature and intake air temperature when the fault set.
Check for other temperature, boost or sensor supply codes that point to a shared wiring or supply fault.
Locate the bank 2 charge air cooler temperature sensor using model-specific information and inspect the sensor, connector and wiring for damage, heat, chafing, oil or corrosion.
With the engine cold, compare the live bank 2 charge air temperature reading with the intake air and coolant temperatures; they should be close.
Wiggle-test the harness and connector with the engine running while watching the live data for dropouts or spikes.
Check the sensor's resistance against the manufacturer's specification at a known temperature, or measure its supply and signal voltage, following the wiring diagram.
Test the signal, reference and ground wires for open circuit, short to ground or short to supply, and for excessive resistance.
Inspect the intercooler pipes and connections for oil or leaks that could contaminate the sensor.

How to fix

Replace the bank 2 charge air cooler temperature sensor if its readings or resistance are out of specification.
Repair or replace damaged wiring, and secure the harness away from heat and sharp edges.
Clean, repair or replace corroded or loose connector terminals.
Fix any intake or intercooler leak that is contaminating the sensor, then clean or replace the affected parts.
Repair the shared supply or ground fault if the wiring tests show one; only consider the control unit after all other checks and following manufacturer guidance.

Can I keep driving?

Medium severity

The car can usually be driven carefully for a short time, but power may be limited and the control unit may be working from estimated values. Get it checked soon, and stop if the engine runs badly or other warning lights appear.

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