AutoCodes – Hummer – B0527 Hummer

B0527 Hummer Code - Right Turn Signal Circuit Low

Quick Answer

When the Body Control Module (BCM) receives a right turn signal ON command from the turn signal switch, the BCM will apply voltage to the right rear stop/turn lamp supply voltage circuit and right turn signal lamps supply voltage circuit. Common causes include Faulty Right Turn Signal Lamp Bulb, Right Turn Signal Lamp Bulb harness is open or shorted, Right Turn Signal Lamp Bulb 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
B0527 Hummer indicates Right Turn Signal Circuit Low.
Common causes
Common causes include Faulty Right Turn Signal Lamp Bulb, Right Turn Signal Lamp Bulb harness is open or shorted, Right Turn Signal Lamp Bulb 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 2,802
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Mar 11, 2021
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Code B0527 Hummer Description

When the Body Control Module (BCM) receives a right turn signal ON command from the turn signal switch, the BCM will apply voltage to the right rear stop/turn lamp supply voltage circuit and right turn signal lamps supply voltage circuit. The turn signal flasher is integrated within the BCM and will flash both circuits simultaneously. The turn signal indicator is also illuminated utilizing the right rear stop/turn lamp supply voltage circuit. The Diagnostic Trouble Code (DTC) is set when the right front and/or right rear turn signals will not operate or will remain always ON.
OBDII Code B0527 Hummer - Right Turn Signal Circuit Low - AutoCodes.com
B0527 Hummer Code - Right Turn Signal Circuit Low

What are the Possible Causes of the DTC B0527 Hummer?

  • Faulty Right Turn Signal Lamp Bulb
  • Right Turn Signal Lamp Bulb harness is open or shorted
  • Right Turn Signal Lamp Bulb circuit poor electrical connection
  • Faulty Instrument Panel Cluster (IPC)
  • Faulty Body Control Module (BCM)

How to Fix the DTC B0527 Hummer?

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 B0527 Hummer 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 B0527 Hummer code?

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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 B0527 Hummer Code

1. What are the common symptoms of OBDII code B0527 in a Hummer related to the right turn signal circuit low?

- The common symptoms include the right turn signal not functioning properly or blinking at a faster rate than usual.

2. What are the possible causes of the OBDII code B0527 Hummer indicating a low right turn signal circuit?

- Possible causes may include a faulty right turn signal bulb, a damaged wiring harness, a malfunctioning turn signal switch, or a problem with the body control module.

3. How can I diagnose the OBDII code B0527 in my Hummer's right turn signal circuit?

- To diagnose the issue, start by visually inspecting the right turn signal bulb and the wiring harness for any visible damage. Use a multimeter to test for continuity and voltage along the circuit.

4. Are there any repair tips for fixing the OBDII code B0527 related to the right turn signal circuit low in a Hummer?

- Repair tips may include replacing the right turn signal bulb if it's faulty, repairing any damaged wiring, checking and possibly replacing the turn signal switch, or resetting the body control module.

5. Can a DIY enthusiast fix the OBDII code B0527 in a Hummer's right turn signal circuit?

- Depending on the underlying cause, DIY enthusiasts with basic automotive knowledge may be able to fix the issue by following repair guides or consulting with a professional for guidance.

6. How critical is it to address the OBDII code B0527 Hummer indicating a low right turn signal circuit?

- While the right turn signal circuit issue may not affect the overall drivability of the vehicle, it is crucial to address for safety reasons and to ensure proper signaling while driving.

7. Is it possible for other vehicle systems to be affected by the OBDII code B0527 related to the right turn signal circuit in a Hummer?

- Yes, since the turn signal system is interconnected with other electrical systems in the vehicle, a malfunction in the right turn signal circuit may impact related systems.

8. How can I reset the OBDII code B0527 after repairing the right turn signal circuit issue in my Hummer?

- After addressing the root cause of the problem, reset the OBDII code by using an OBDII scanner or disconnecting the vehicle's battery for a few minutes to clear the code.

9. Are there any preventive measures to avoid encountering the OBDII code B0527 Hummer for the right turn signal circuit low issue?

- Regularly inspect and maintain the vehicle's turn signal system, promptly replace any faulty bulbs, and address any electrical issues to prevent the recurrence of the code.

10. Will driving with the OBDII code B0527 indicating a low right turn signal circuit in a Hummer lead to any further damage?

- Driving with the code may not cause immediate damage, but it is essential to address the issue promptly to prevent potential safety hazards and ensure proper functionality of the turn signal system.

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