P0537 OBD-II: A/C Evaporator Temperature Sensor Circuit Low
P0537 Severity
Will P0537 go away on its own?
Once the vehicle's onboard system no longer detects the issue, most codes will disappear on their own. If your vehicle still has this code, however, it should be properly diagnosed to avoid a more serious problem.
For a proper diagnosis, RepairPal Certified shops have the equipment, tools, and expertise.
Moderate severity codes might not threaten the vehicle's safety or functionality immediately, but you should still get it diagnosed within a reasonable time frame to keep your car running well.
What causes OBD-II fault code P0537?
The A/C Evaporator Temperature Sensor is used verify proper operation of the A/C system and to prevent the evaporator from getting too cold and freezing up. The engine computer (PCM) looks to see a temperature change when the A/C Compressor is activated. When the engine control module (PCM) does not see a change in temperature with the A/C compressor turned on, the PCM will set code P0537. On hybrid vehicles, this sensor may be controlled and used by the Hybrid Powertrain Control Module.
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OBD II Fault Code
- OBD II P0537
OBD-II Code A/C may not operate is defined as a A/C Evaporator Temperature Sensor Circuit Low
The A/C Evaporator Temperature Sensor is used verify proper operation of the A/C system and to prevent the evaporator from getting too cold and freezing up. The engine computer (PCM) looks to see a temperature change when the A/C Compressor is activated. When the engine control module (PCM) does not see a change in temperature with the A/C compressor turned on, the PCM will set code P0537. On hybrid vehicles, this sensor may be controlled and used by the Hybrid Powertrain Control Module.
A/C may not operate Symptoms
- A/C may not operate
Common Problems That Trigger the P0537 Code
- A/C evaporator temperature sensor failure
- A/C low side temperature sensor failure
- High voltage powertrain control module failure
- Powertrain Control Module (PCM) failure
- Wiring issue
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