P0537

A/C Evaporator Temperature Sensor Circuit Low

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$22–56 (est.)

Symptoms

Incorrect operation of the air conditioning system
Increased noise from the air conditioning compressor
Unstable supply air temperature
Check Engine light comes on

Causes

Faulty evaporator temperature sensor
Open or short circuit in wiring harness
Poor contact in sensor connectors
Air conditioning control unit malfunction

How to Fix

Check the integrity of the sensor wiring harness
Check the resistance of the evaporator temperature sensor
Clean sensor connector contacts
Replace evaporator temperature sensor if necessary
Reset the error and check the system operation

Related codes

P0538 P0539 P0740