Engine-Codes.com
Engine-Codes – GMC – P1B99 GMC

P1B99 GMC Code - Hybrid/Electric Vehicle Battery 61 Circuit Performance

Quick Answer

The P1B99 diagnostic trouble code for GMC indicates an issue with the Hybrid/Electric Vehicle Battery 61 Circuit Performance. Common causes include Faulty battery, Loose or corroded battery connections, Wiring issues in the battery circuit. 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
P1B99 GMC indicates Hybrid/Electric Vehicle Battery 61 Circuit Performance.
Common causes
Common causes include Faulty battery, Loose or corroded battery connections, Wiring issues in the battery circuit.
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.
What is this?
Table of contents Created and updated by William Orellana on Aug 18, 2024
💬 Need more help? Ask Auto Expert for instant answers — it's free!
AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play

Code P1B99 GMC Description

The P1B99 diagnostic trouble code for GMC indicates an issue with the Hybrid/Electric Vehicle Battery 61 Circuit Performance. This code suggests that there is a problem with the performance of the battery circuit within the hybrid or electric vehicle. The battery circuit is crucial for providing power to the electric components of the vehicle, including the motor, lights, and other electrical systems.

OBDII Code P1B99 GMC - Hybrid/Electric Vehicle Battery 61 Circuit Performance
P1B99 GMC Code - Hybrid/Electric Vehicle Battery 61 Circuit Performance

Common Causes of P1B99 GMC

  1. Faulty battery
  2. Loose or corroded battery connections
  3. Wiring issues in the battery circuit
  4. Malfunctioning battery management system
  5. Overcharging or undercharging of the battery

Symptoms of P1B99 GMC

  1. Decreased electric driving range
  2. Poor fuel economy
  3. Issues with vehicle starting
  4. Diminished performance of electric components
  5. Warning lights on the dashboard

How to Fix P1B99 GMC

  1. Diagnose the specific cause of the issue using a diagnostic scanner
  2. Inspect the battery connections and wiring for any damage or corrosion
  3. Test the battery's performance and health
  4. Replace the battery, if necessary
  5. Reset the battery management system and clear the trouble code

Cost to Fix P1B99 GMC

The cost of repairing the Hybrid/Electric Vehicle Battery 61 Circuit Performance issue can vary depending on the specific cause of the problem and the parts and labor required for the repair. On average, the repair cost for this issue can range from $200 to $1000 or more. It's important to note that diagnostic time and labor rates at auto repair shops can vary, so it's recommended to get a detailed estimate from a professional mechanic.

Need more information about the P1B99 GMC code?

Need more information on how to fix the P1B99 GMC code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1B99 GMC 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 P1B99 GMC Code

1. What are the common symptoms of OBDII code P1B99 in GMC hybrid/electric vehicles?

- Common symptoms include reduced hybrid system performance, decreased fuel efficiency, and potential issues with the vehicle's battery charging.

2. What are the possible causes of OBDII code P1B99 in a GMC hybrid/electric vehicle?

- The code P1B99 typically indicates a fault in the Hybrid/Electric Vehicle Battery 61 Circuit, which can be caused by issues such as battery pack degradation, wiring problems, or faulty sensors.

3. How can I diagnose the OBDII code P1B99 in my GMC hybrid/electric vehicle?

- Diagnosing code P1B99 usually involves conducting a thorough inspection of the hybrid/electric vehicle battery system, checking for loose connections, testing the battery cells, and using a diagnostic scanner to analyze the code.

4. Can I continue driving my GMC hybrid/electric vehicle with OBDII code P1B99 present?

- It is not recommended to continue driving the vehicle with code P1B99 present, as it can lead to further damage to the hybrid battery system and potentially impact the vehicle's performance and safety.

5. How can I repair OBDII code P1B99 in my GMC hybrid/electric vehicle?

- Repairing OBDII code P1B99 may involve replacing faulty battery components, repairing damaged wiring, resetting the battery management system, or seeking assistance from a professional mechanic with experience in hybrid/electric vehicle systems.

6. Is it safe to reset the OBDII code P1B99 in my GMC hybrid/electric vehicle without addressing the underlying issue?

- Resetting the code without addressing the underlying issue may temporarily clear the warning light, but it is not a recommended long-term solution as the problem may persist and cause further complications.

7. How much does it typically cost to repair OBDII code P1B99 in a GMC hybrid/electric vehicle?

- The cost of repairing code P1B99 can vary depending on the specific issue causing the code, the extent of the damage, and the labor rates of the repair facility. It is advisable to obtain a diagnosis and estimate from a qualified technician.

8. Can OBDII code P1B99 be triggered by a simple battery system reset in a GMC hybrid/electric vehicle?

- In some cases, performing a battery system reset may temporarily clear the code P1B99, especially if the issue was due to a temporary fault. However, if the code reappears, it indicates a persistent problem that needs to be addressed.

9. Are there any preventive maintenance tips to avoid OBDII code P1B99 in GMC hybrid/electric vehicles?

- Regularly inspecting the hybrid battery system, maintaining proper charging habits, avoiding deep discharges, and following the manufacturer's recommended maintenance schedule can help prevent issues that may trigger code P1B99.

10. Can I use an OBDII scanner to clear OBDII code P1B99 in my GMC hybrid/electric vehicle?

- While an OBDII scanner can clear the code temporarily, it is important to diagnose and address the root cause of the issue triggering code P1B99 to prevent it from reoccurring.

Discuss the causes and fixes for P1B99 GMC OBDII Code

Submit a New Comment

Code P1B99 GMC comments

No comments found for this page.