Charge Air Cooler Coolant Temperature Sensor A Intermittent/Erratic

Descripción

This code indicates a problem with the sensor that measures the temperature of the coolant used to cool the engine's air intake. The sensor's readings are inconsistent or erratic, meaning it's not reliably reporting the temperature.

Pasos de reparación

1. 1 Check the electrical connector at the charge air cooler coolant temperature sensor for corrosion, looseness, or damage and clean or reseat as needed.
2. 2 Inspect the wiring harness between the charge air cooler coolant temperature sensor and the ECM for chafing, broken wires, or damaged insulation.
3. 3 Check the charge air cooler system for coolant leaks, including hoses, clamps, and the cooler itself, and repair any leaks found.
4. 4 Test the charge air cooler coolant temperature sensor with a multimeter to verify proper resistance values match manufacturer specifications.
5. 5 Replace the charge air cooler coolant temperature sensor if readings are out of range or intermittent.
6. 6 Repair or replace any damaged wiring or connectors in the sensor circuit.
7. 7 Have the engine control module (ECM) inspected and reprogrammed or replaced if all other components test normal.

Diagnóstico y costo