AutoCodes – Buick – B0183 Buick

B0183 Buick Code - Solar Load Sensor Circuit

Quick Answer

The ambient light/sunload sensor integrates the sunload sensor and passenger compartment temperature sensor into a single assembly. Common causes include Faulty Solar Load Sensor, Solar Load Sensor harness is open or shorted, Solar Load Sensor circuit poor electrical connection. Severity is Low - monitor the vehicle and repair when practical. The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

What it means: B0183 Buick indicates Solar Load Sensor Circuit.
Common causes: Common causes include Faulty Solar Load Sensor, Solar Load Sensor harness is open or shorted, Solar Load Sensor circuit poor electrical connection.
Severity: Low - monitor the vehicle and repair when practical.
Can I drive?: The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

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Code Popularity 3,237

How popular is this code, among other codes? Low

Repair Importance Level

Low (Monitor) (1 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Nov 10, 2022

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code B0183 Buick Description

The ambient light/sunload sensor integrates the sunload sensor and passenger compartment temperature sensor into a single assembly.
The solar sensor is connected to a low reference and a 5 V biased (pull-up) signal circuit voltage from the Heating, Ventilation, and Air Conditioning (HVAC) Control Module. As the sunload increases, the sensor signal voltage decreases. The signal varies between 0.1 - 4.9 V and is provided to the HVAC control module.
The passenger compartment temperature sensor is a negative temperature coefficient thermistor. A signal and low reference circuit enable 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 vehicle interior temperature to increase. The HVAC system compensates for the increased temperature by diverting additional cool air into the vehicle.

OBDII Code B0183 Buick - Solar Load Sensor Circuit - AutoCodes.com — B0183 Buick Code - Solar Load Sensor Circuit

What does this mean?

What are the Possible Causes of the DTC B0183 Buick?

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 to Fix the DTC B0183 Buick?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What does this mean?

Code Tech Notes

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 Code?

Labor: 1.0

To diagnose the B0183 Buick code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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Need Help with the Code?

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about B0183 Buick Code

1. What does the OBDII code B0183 mean on a Buick?

The B0183 code indicates a problem with the Solar Load Sensor Circuit, which is responsible for detecting sunlight intensity to adjust the climate control system.

2. What are the common symptoms of code B0183 on a Buick?

Symptoms may include improper functioning of the automatic climate control system, inconsistent cabin temperature, or the A/C system not adjusting to sunlight changes.

3. What causes the B0183 code in a Buick?

Common causes include a faulty solar load sensor, damaged wiring or connectors in the circuit, or a malfunctioning control module.

4. How can I diagnose the B0183 code on my Buick?

Start by visually inspecting the solar load sensor, wiring, and connectors for damage. Use a multimeter to test for proper voltage and continuity in the circuit.

5. Where is the solar load sensor located in a Buick?

The solar load sensor is typically mounted on the dashboard near the windshield, where it can detect sunlight entering the cabin.

6. Can a dirty windshield cause the B0183 code?

A dirty or obstructed windshield is unlikely to trigger the code, but it can reduce the sensor's accuracy, so keeping the area clean is recommended.

7. How do I fix the B0183 code on my Buick?

Repairs may include replacing the faulty solar load sensor, repairing damaged wiring or connectors, or reprogramming the control module if needed.

8. Can I drive my Buick with the B0183 code active?

Yes, you can drive with this code, but the automatic climate control system may not function properly, leading to discomfort in varying sunlight conditions.

9. How much does it cost to fix the B0183 code on a Buick?

Repair costs can range from $100 to $300, depending on whether the sensor, wiring, or control module needs replacement or repair.

10. Can a low battery cause the B0183 code to appear on my Buick?

A low or failing battery is unlikely to directly cause this code, but it can lead to electrical issues that might affect the sensor circuit, so checking the battery health is a good idea.