B0183 - Solar Load Sensor Circuit

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3  What does this mean?

Possible causes

  • Faulty Solar Load Sensor
  • Solar Load Sensor harness is open or shorted
  • Solar Load Sensor circuit poor electrical connection
  • Faulty Heating, Ventilation, and Air Conditioning (HVAC) Control Module
  • Tech notes

    B0183 02: Solar Load Sensor Circuit Short to Ground
    B0183 05: Solar Load Sensor Circuit High Voltage/Open

    Possible symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)
  • B0183 Description

    The ambient light/sunload sensor integrates the sunload sensor and passenger compartment temperature sensor. This sensor assembly provides information about the sun heat intensity and passenger Compartment Temperature.

    The solar sensor is connected to ground and to the 5 V stabilized voltage supply through the Heating, Ventilation, and Air Conditioning (HVAC) Control Module. As the sunload increases, the sensor signal voltage also increases and vice versa. The signal varies between 1.4-4.5 V and is provided to the HVAC control module.

    The passenger compartment temperature sensor is a negative temperature co-efficient thermistor. A signal and low reference circuit enables the sensor to operate. As the air temperature increases, the sensor resistance decreases. The sensor signal varies between 0-5 V.

    Bright or high intensity light causes the vehicles interior temperature to increase. The HVAC system compensates for the increased temperature by diverting additional cool air into the vehicle.

    OBDII Code B0183 - Solar Load Sensor Circuit - Engine-Codes.com

    B0183 Information for specific makes

  • B0183 BUICK Solar Load Sensor Circuit
  • B0183 CADILLAC Solar Load Sensor Circuit
  • B0183 CHEVROLET Solar Load Sensor Circuit
  • B0183 GMC Solar Load Sensor Circuit
  • Related Information

    Repair Importance Level: 3
     
    1=Low 2=Medium 3=High  
    Repair Difficulty Level: 3
     
    1=Easy 2=Moderate 3=Hard  

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