AutoCodes – Generic – B1550

B1550 Code - Power Window Master Circuit Short To Ground

Quick Answer

The Body Control Module (BCM) monitors the Power Window Master Switch. Common causes include Faulty Power Window Master Switch, Power Window Master Switch harness is open or shorted, Power Window Master Switch circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: B1550 indicates Power Window Master Circuit Short To Ground.
Common causes: Common causes include Faulty Power Window Master Switch, Power Window Master Switch harness is open or shorted, Power Window Master Switch circuit poor electrical connection.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 8,301

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on May 02, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1550 Description

The Body Control Module (BCM) monitors the Power Window Master Switch. The BCM sets the OBDII code when the Power Window Master Switch is not to factory specifications.

OBDII Code B1550 - Power Window Master Circuit Short To Ground - AutoCodes.com — B1550 Code - Power Window Master Circuit Short To Ground

What does this mean?

What are the Possible Causes of the DTC B1550?

Faulty Power Window Master Switch
Power Window Master Switch harness is open or shorted
Power Window Master Switch circuit poor electrical connection
Faulty Body Control Module (BCM)

How to Fix the DTC B1550?

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 B1550 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.

Need more information about the B1550 code?

Need more information on how to fix the B1550 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1550 code diagnosed by a professional: Find a repair shop in your area

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 B1550 Code

1. What are the common symptoms of OBDII code B1550 (Power Window Master Circuit Short To Ground)?

- The common symptoms include non-functioning power windows, power windows that operate intermittently, or power windows that are stuck in one position.

2. What are the potential causes of OBDII code B1550?

- The code B1550 can be caused by a short to ground in the power window master circuit, a faulty power window switch, damaged wiring in the power window circuit, or a malfunctioning power window control module.

3. How can I diagnose OBDII code B1550 related to a power window issue?

- To diagnose the issue, you can use a scan tool to retrieve the trouble codes, inspect the power window switch and wiring for any visible damage, and perform a continuity test to check for a short to ground in the power window circuit.

4. Can I still drive my vehicle with OBDII code B1550?

- It is generally safe to drive your vehicle with this code, but it is important to address the power window issue as soon as possible to ensure proper functionality and convenience.

5. Is it possible to repair OBDII code B1550 on my own?

- Depending on your skill level and access to tools, you may be able to repair the code B1550 yourself by identifying and fixing the short to ground in the power window master circuit or replacing a faulty power window switch.

6. What are some tips for repairing OBDII code B1550 at home?

- Some repair tips include checking and repairing any damaged wiring in the power window circuit, ensuring all connections are secure, and using a multimeter to test for continuity and shorts in the circuit.

7. Do I need to reset the OBDII code B1550 after repairing the power window issue?

- After repairing the power window problem causing the code B1550, you may need to use a scan tool to clear the code and reset the vehicle's computer to turn off the check engine light.

8. Can extreme weather conditions cause OBDII code B1550 to occur?

- Yes, extreme weather conditions such as heavy rain or extreme cold can potentially damage the power window circuit, leading to a short to ground and triggering the OBDII code B1550.

9. Are there any safety precautions I should take when working on OBDII code B1550 related to power windows?

- It is important to disconnect the vehicle's battery before working on the power window circuit to prevent electrical shock or damage to the vehicle's electrical system.

10. How long does it typically take to repair OBDII code B1550 related to a power window issue?

- The repair time can vary depending on the exact cause of the issue and your level of experience, but it may take anywhere from 30 minutes to a few hours to diagnose and repair the problem.