P1533
A/C Evaporator Temperature Sensor Circuit High Voltage
Severity
⚠️ MediumCan you drive?
Yes, but get it checked soon
Approx. repair cost
$17–56 (est.)
Symptoms
- Incorrect operation of the air conditioner
- The air conditioner turns off spontaneously
- Evaporator freezing
- Increased fan noise
- Hot air from deflectors
Causes
- Evaporator temperature sensor malfunction
- Open or short circuit in the sensor circuit
- Poor contact in the sensor connector
- Contact corrosion
- Air conditioning control unit malfunction
How to Fix
- Check the resistance of the evaporator temperature sensor
- Inspect the sensor circuit for damage
- Check the contacts in the sensor connector
- Test the air conditioner control unit
- If necessary, replace the evaporator temperature sensor