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Engine-Codes - Buick - B0183 BUICK

B0183 BUICK - Solar Load Sensor Circuit

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3  What is this?
Table of contents

B0183 BUICK Possible Causes

What does this mean?
  • 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

How is the B0183 BUICK code repair?

Start by checking the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.

Tech Notes

What does this mean?
B0183 02: Solar Load Sensor Circuit Short to Ground
B0183 05: Solar Load Sensor Circuit High Voltage/Open

What is the cost to diagnose the B0183 BUICK code

Labor: 1.0

The cost to diagnose the B0183 BUICK code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.
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Possible Symptoms

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

B0183 BUICK Meaning

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.

More Information

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