Ford P0538 OBD-II Trouble Code Definition:
P0538 A/C Evaporator Temperature Circuit High Input
P0538 Ford OBD-II Trouble CodeDescription:
OBD Trouble Code P0538
A/C Evaporator Temperature Sensor Circuit High
What does the code mean? OBD-ii Code P0538 definition:
The PCM sources a low current 5 volts on the A/C Evaporator Temperature (ACET) sensor circuit. As the A/C evaporator air temperature changes, the ACET circuit resistance changes (which changes the voltage the PCM detects).
The PCM sources a low current 5 volts on the A/C Evaporator Temperature (ACET) sensor circuit. As the A/C evaporator air temperature changes, the ACET circuit resistance changes (which changes the voltage the PCM detects).
Symptoms Sumptoms of OBD code P0538
– Engine Light ON (or Service Engine Soon Warning Light) – A/C Inoperative – A/C Blows Warm
– Engine Light ON (or Service Engine Soon Warning Light) – A/C Inoperative – A/C Blows Warm
Causes Causes of the OBD-II code P0538
– A/C evaporator temperature sensor circuit is open or short – Poor electrical connection at the evaporator temperature sensor circuit – Faulty Evaporator Temperature sensor The Error code is generally activated on detection of the following conditions: When the ACET signal is detected above the self-test minimum the PCM will triggered the P0538 code.
– A/C evaporator temperature sensor circuit is open or short – Poor electrical connection at the evaporator temperature sensor circuit – Faulty Evaporator Temperature sensor The Error code is generally activated on detection of the following conditions: When the ACET signal is detected above the self-test minimum the PCM will triggered the P0538 code.
Solutions