AutoCodes – GMC – B0184 GMC

B0184 GMC Code - Sunload Sensor 1 Circuit Performance

Quick Answer

The sunload sensor is a 2-wire photo diode. Common causes include Faulty Sunload Sensor 1, Sunload Sensor 1 harness is open or shorted, Sunload Sensor 1 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: B0184 GMC indicates Sunload Sensor 1 Circuit Performance.
Common causes: Common causes include Faulty Sunload Sensor 1, Sunload Sensor 1 harness is open or shorted, Sunload Sensor 1 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 1,026

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 Mar 10, 2021

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B0184 GMC Description

The sunload sensor is a 2-wire photo diode. The vehicle uses left and right sunload sensors. The two sensors are integrated into the sunload sensor assembly along with the ambient light sensor. Low reference and signal circuits enable the sensor to operate. As the sunload increases, the sensor signal decreases. The sensor operates within an intensity range between completely dark and bright. The sensor signal varies between 0-5 volts. The Heating, Ventilation, and Air Conditioning (HVAC) Control Module converts the signal to a range between 0-255 counts. The sunload sensor provides the HVAC control module a measurement of the amount of light shining on the vehicle. Bright or high intensity, light causes the vehicles inside temperature to increase. The HVAC system compensates for the increased temperature by diverting additional cool air into the vehicle.

OBDII Code B0184 GMC - Sunload Sensor 1 Circuit Performance - AutoCodes.com — B0184 GMC Code - Sunload Sensor 1 Circuit Performance

What does this mean?

What are the Possible Causes of the DTC B0184 GMC?

Faulty Sunload Sensor 1
Sunload Sensor 1 harness is open or shorted
Sunload Sensor 1 circuit poor electrical connection
Faulty Heating, Ventilation, and Air Conditioning (HVAC) Control Module

How to Fix the DTC B0184 GMC?

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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B0184 GMC 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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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 B0184 GMC Code

1. What are common symptoms of OBDII code B0184 GMC related to the Sunload Sensor 1 Circuit Performance?

- Common symptoms include inaccurate readings from the sunload sensor, inconsistent automatic climate control performance, and potential issues with the HVAC system.

2. What are the possible causes of OBDII code B0184 GMC indicating Sunload Sensor 1 Circuit Performance?

- Possible causes may include a faulty sunload sensor, damaged wiring or connectors in the sensor circuit, or a malfunction in the HVAC control module.

3. How can I diagnose the OBDII code B0184 GMC for the Sunload Sensor 1 Circuit Performance issue?

- Diagnosis typically involves using a scan tool to retrieve the trouble code, inspecting the sunload sensor and its wiring for any visible damage, and performing circuit tests to identify the source of the problem.

4. Can a DIY enthusiast repair OBDII code B0184 GMC related to the Sunload Sensor 1 Circuit Performance?

- While some basic troubleshooting steps can be taken, repairing this issue often requires specialized knowledge and tools, making it more suitable for professional mechanics.

5. Is it safe to continue driving with OBDII code B0184 GMC triggered by Sunload Sensor 1 Circuit Performance?

- It is generally not recommended to ignore this code, as it can affect the proper functioning of the HVAC system and may lead to discomfort or inconvenience while driving.

6. How much does it typically cost to repair OBDII code B0184 GMC for Sunload Sensor 1 Circuit Performance?

- Repair costs can vary depending on the exact cause of the issue, but they may involve expenses for parts replacement, labor charges, and diagnostic fees from a repair shop.

7. Are there any preventive measures to avoid encountering OBDII code B0184 GMC related to the Sunload Sensor 1 Circuit Performance?

- Regular maintenance checks on the HVAC system, including inspecting the sunload sensor and its connections, can help prevent issues that may trigger this trouble code.

8. Can extreme weather conditions impact the Sunload Sensor 1 Circuit Performance and trigger OBDII code B0184 GMC?

- Yes, extreme heat or cold can affect the performance of the sunload sensor, potentially leading to false readings and triggering the diagnostic trouble code.

9. How long does it typically take to repair OBDII code B0184 GMC associated with Sunload Sensor 1 Circuit Performance?

- Repair times can vary depending on the extent of the issue and availability of parts, but it may take a few hours to a day for a skilled mechanic to diagnose and fix the problem.

10. Is resetting the OBDII system sufficient to clear the B0184 GMC trouble code for Sunload Sensor 1 Circuit Performance?

- While clearing the code may temporarily turn off the warning light, it is crucial to address the underlying issue causing the code to prevent it from reoccurring.