P0539 OBD-II: A/C Evaporator Temperature Sensor Circuit Intermittent
P0539 Severity
Will P0539 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 P0539?
The A/C Evaporator Temperature Sensor is used to prevent the evaporator from getting too cold and freezing up. When the engine control module (PCM) detects a problem with this sensor or the signal from it, the PCM will set code P0539.
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OBD II Fault Code
- OBD II P0539
OBD-II Code A/C may not operate is defined as a A/C Evaporator Temperature Sensor Circuit Intermittent
The A/C Evaporator Temperature Sensor is used to prevent the evaporator from getting too cold and freezing up. When the engine control module (PCM) detects a problem with this sensor or the signal from it, the PCM will set code P0539.
A/C may not operate Symptoms
- A/C may not operate
Common Problems That Trigger the P0539 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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