P1BB6 Buick Code - Hybrid/Electric Vehicle Battery 70 Circuit High Voltage
Quick Answer
The Hybrid/Electric Vehicle battery pack contains 288 cells. Common causes include Faulty Hybrid/Electric Vehicle Battery Pack, Faulty Hybrid/Electric Vehicle Battery Interface Control Module. 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
- P1BB6 Buick indicates Hybrid/Electric Vehicle Battery 70 Circuit High Voltage.
- Common causes
- Common causes include Faulty Hybrid/Electric Vehicle Battery Pack, Faulty Hybrid/Electric Vehicle Battery Interface Control Module.
- 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.
Code P1BB6 Buick Description
The battery energy control module monitors the voltage of the 96 battery cell groups through the four hybrid/EV battery interface control modules. Voltage sense circuits are attached to each individual cell group, and these sense circuits terminate at a connector located on the top surface of the battery section. A serviceable auxiliary battery wiring harness joins this connector to a hybrid/EV battery interface control module, also located on the top surface of the battery section. The hybrid/EV battery interface control module encodes the voltage reading and transmits it to the battery energy control module through the battery control harness. There is one hybrid/EV battery interface control module located on battery sections one and two, and two hybrid/EV battery interface control modules associated with battery section three. The hybrid/EV battery interface control module, battery energy control module wiring harness, auxiliary battery wiring harness, and battery energy control module are all considered serviceable components.
The battery energy control module will determine when a fault condition is present. Diagnostics and system status are communicated from the battery energy control module to hybrid/EV powertrain control module 2 through serial data. The hybrid/EV powertrain control module 2 is the host controller for diagnostic trouble code information.
What are the Possible Causes of the DTC P1BB6 Buick?
- Faulty Hybrid/Electric Vehicle Battery Pack
- Faulty Hybrid/Electric Vehicle Battery Interface Control Module
How to Fix the DTC P1BB6 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 is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P1BB6 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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Frequently Asked Questions about P1BB6 Buick Code
What does the OBDII code P1BB6 mean for a Buick?
The code P1BB6 indicates a "Hybrid/Electric Vehicle Battery 70 Circuit High Voltage," suggesting an issue with the voltage levels in a specific battery circuit.
What are the common symptoms of the P1BB6 code?
Symptoms may include a check engine light, reduced hybrid system performance, limited electric drive capability, or the vehicle entering a limp mode.
What causes the P1BB6 code to appear?
Common causes include a faulty battery pack sensor, damaged wiring or connectors in the battery circuit, or an issue with the hybrid battery control module.
Can a loose connection trigger the P1BB6 code?
Yes, a loose or corroded connection in the battery circuit can cause a high voltage reading and trigger this code.
How is the P1BB6 code diagnosed?
A technician will inspect wiring, connectors, and sensors in the hybrid battery system, perform voltage checks, and use a scan tool to monitor battery module data.
Can I continue driving with the P1BB6 code?
It’s not recommended, as continuing to drive could lead to further damage or reduced hybrid system performance.
How do you fix the P1BB6 code on a Buick?
Repairs may involve replacing a faulty battery sensor, repairing damaged wiring or connectors, or reprogramming the hybrid battery control module.
Is the hybrid battery itself likely to be the problem with the P1BB6 code?
While it’s possible, the issue is more often due to a sensor, wiring, or control module rather than the hybrid battery itself.
How much does it typically cost to repair the P1BB6 code?
Repair costs can vary widely but typically range from $150 to $1,000, depending on whether the issue is a simple wiring repair or a sensor/module replacement.
Can a software update resolve the P1BB6 code?
In some cases, a software update to the hybrid battery control module may resolve the issue if it’s related to a programming error.
Discuss the causes and fixes for P1BB6 Buick OBDII Code
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