P0538
A/C Evaporator Temperature Sensor Circuit High
P0538 is an OBD-II diagnostic trouble code meaning: A/C Evaporator Temperature Sensor Circuit High. Common causes: evaporator temperature sensor malfunction, broken or damaged wiring. Estimated repair cost: $22–56.
Symptoms
- Incorrect operation of the air conditioner
- Constant operation of the compressor
- Reduced cooling efficiency
- Fogging of windows
Causes
- Evaporator temperature sensor malfunction
- Broken or damaged wiring
- Poor contact in connectors
- Malfunction of the climate control control unit
How to Fix
- Check the integrity of wiring and connectors
- Measure sensor resistance (must meet specification)
- Replace sensor if necessary
- Check the operation of the air conditioning system after repair
Related codes
Error P0538 by Vehicle Brand
FAQ
What does the P0538 code mean?
P0538 is an OBD-II diagnostic trouble code that indicates: A/C Evaporator Temperature Sensor Circuit High
What causes a P0538 error code?
The most common causes of P0538 include: Evaporator temperature sensor malfunction; Broken or damaged wiring; Poor contact in connectors; Malfunction of the climate control control unit.
How do I fix a P0538 diagnostic trouble code?
To fix P0538: Check the integrity of wiring and connectors. Measure sensor resistance (must meet specification). Replace sensor if necessary. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P0538?
Limited driving only, diagnose soon
How much does it cost to fix P0538?
The estimated repair cost for P0538 is $22–56. Actual cost depends on your vehicle, location, and labor rates.
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