P0535 Code - A/C Evaporator Temperature Sensor Circuit

What Does P0535 Mean?

OBD-II Code A/C may not operate is defined as a A/C Evaporator Temperature Sensor Circuit

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 P0535.

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What are the common causes of P0535 ?

The most common cause of this code being stored is due to a faulty evaporator temperature sensor. Other causes can include the evaporator core freezing up due to a faulty expansion valve, faulty electrical connectors, damaged, shorted, or open wiring, a low freon condition, an overcharged a/c system, or a faulty climate control head.



How do you troubleshoot P0535 ?

If you find a related TSB, the information will often help in diagnosing the code in question as TSBs are crested from many thousands of repairs. Look for missing ground strap or a rusty ground where the fuel tank is grounded to the frame. Check for damage to the wiring harness connector.

Searches related to P0535 - A/C Evaporator Temperature Sensor Circuit

• evaporator temperature sensor testing
• p0353