P0539
A/C Evaporator Temperature Sensor Circuit Intermittent
P0539 is an OBD-II diagnostic trouble code meaning: A/C Evaporator Temperature Sensor Circuit Intermittent. Common causes: open or short circuit in wiring harness, poor contact in sensor connectors. Estimated repair cost: $33–89.
Symptoms
- Incorrect operation of the air conditioner
- Intermittent compressor on/off
- Increased or decreased temperature in the cabin
Causes
- Open or short circuit in wiring harness
- Poor contact in sensor connectors
- Evaporator temperature sensor malfunction
- Problems with the climate control unit
How to Fix
- Check the integrity of the wiring harness and connectors
- Test the resistance of the evaporator temperature sensor
- Replace sensor if necessary
- Clean connector contacts
- Check the operation of the air conditioner after repair
Related codes
Error P0539 by Vehicle Brand
FAQ
What does the P0539 code mean?
P0539 is an OBD-II diagnostic trouble code that indicates: A/C Evaporator Temperature Sensor Circuit Intermittent
What causes a P0539 error code?
The most common causes of P0539 include: Open or short circuit in wiring harness; Poor contact in sensor connectors; Evaporator temperature sensor malfunction; Problems with the climate control unit.
How do I fix a P0539 diagnostic trouble code?
To fix P0539: Check the integrity of the wiring harness and connectors. Test the resistance of the evaporator temperature sensor. Replace sensor if necessary. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P0539?
Limited driving only, diagnose soon
How much does it cost to fix P0539?
The estimated repair cost for P0539 is $33–89. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat