P1535
A/C High Side Temperature Sensor Circuit
Severity
⚠️ MediumCan you drive?
Yes, but get it checked soon
Approx. repair cost
$17–56 (est.)
Symptoms
- Air conditioner won't turn on
- Reduced cooling efficiency
- The air conditioner indicator is flashing
- Increased noise from the compressor
- Air conditioning system overheating
Causes
- High pressure temperature sensor malfunction
- Open or short circuit in the sensor circuit
- Poor contact in the sensor connector
- Low refrigerant level in the system
- Air conditioning control unit malfunction
How to Fix
- Check the refrigerant level in the system
- Inspect the sensor connector and wiring
- Check the sensor resistance (compare with the norm)
- Replace temperature sensor if necessary
- Check the operation of the system after repair