OBDII Code List > P0537
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P0537
P0537 - A/C Evaporator Temperature Circuit Low Input
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Possible causes
- A/C evaporator temperature sensor circuit is open or short
- Poor electrical connection at the evaporator temperature sensor circuit
- Faulty Evaporator Temperature sensor
- Poor electrical connection at the evaporator temperature sensor circuit
- Faulty Evaporator Temperature sensor
When is the code detected?
When the ACET signal is detected below the self-test minimum the PCM will triggered the P0537 code.
Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
- A/C Inoperative
- A/C Blows Warm
- A/C Inoperative
- A/C Blows Warm
P0537 Description
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).
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