P0535 Mercedes-Benz A/C Evaporator Temperature Sensor Circuit
Possible causes
– Faulty Evaporator Temperature sensor
– A/C evaporator temperature sensor harness is open or short
– A/C evaporator temperature sensor circuit poor electrical connection
– A/C evaporator temperature sensor harness is open or short
– A/C evaporator temperature sensor circuit poor electrical connection
What about the obd code?
The Powertrain Control Moduel (PCM) has detected a fault in the temperature sensor circuit
Symptoms
– Engine Light ON (or Service Engine Soon Warning Light)
– A/C Inoperative
– A/C Blows Warm
– A/C Inoperative
– A/C Blows Warm
P0535 Mercedes-Benz Description
The refrigerant system incorporates an A/C compressor controlled by the Powertrain Control Moduel (PCM) through an A/C clutch relay. The climate control assembly sends an A/C request signal to the instrument cluster module, which relays the request to the PCM. An evaporator discharge air temperature sensor is used to disengage the A/C compressor clutch when the evaporator core temperature falls below an acceptable temperature.
The PCM sources a low current 5 volts on the A/C Evaporator Temperature (ACET) sensor circuit. As the A/C evaporator air temperature changes, the ACET circuit resistance changes (which changes the voltage the PCM detects).
Mercedes-Benz Vehicle:Mercedes-Benz C-Class,Mercedes-Benz CL-Class,Mercedes-Benz CLK-Class,Mercedes-Benz CLS-Class,Mercedes-Benz E-Class,Mercedes-Benz G-Class,Mercedes-Benz GL-Class,Mercedes-Benz GLK-Class,Mercedes-Benz M-Class,Mercedes-Benz R-Class,Mercedes-Benz S-Class,Mercedes-Benz SL-Class,Mercedes-Benz SLK-Class,Mercedes-Benz SLS-Class,Mercedes-Benz Sprinter 2500,Mercedes-Benz Sprinter 3500,