P2ACA

Charge Air Cooler Coolant Temperature Sensor B Circuit High

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$17–56 (est.)

Symptoms

Check Engine light comes on
Reduced engine power
Increased fuel consumption
Activating emergency engine operation
Unstable operation at idle

Causes

Coolant Temperature Sensor B Malfunction
Open or short circuit in the sensor circuit
Poor contact in the sensor connector
Wiring harness damage
Problems with the engine control unit

How to Fix

Check the integrity of the sensor circuit
Inspect the connectors and contacts of the sensor
Check sensor resistance at different temperatures
Replace temperature sensor if necessary
Check and, if necessary, update the ECU software

Related codes

P2AC9 P2ACB P2ACC