P1BFE Buick Code - Hybrid/Electric Vehicle Battery 94 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
- P1BFE Buick indicates Hybrid/Electric Vehicle Battery 94 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 P1BFE 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 P1BFE Buick?
- Faulty Hybrid/Electric Vehicle Battery Pack
- Faulty Hybrid/Electric Vehicle Battery Interface Control Module
How to Fix the DTC P1BFE 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 P1BFE 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 P1BFE Buick Code
1. What does the OBDII code P1BFE mean on a Buick?
P1BFE indicates an issue with the Hybrid/Electric Vehicle Battery 94 circuit, specifically detecting high voltage where it shouldn't be.
2. What are the symptoms of code P1BFE in a Buick?
Symptoms may include an illuminated check engine light, reduced hybrid system performance, limited acceleration, and possible warnings about the high-voltage system.
3. What causes code P1BFE in a Buick?
Common causes include a faulty battery module, damaged wiring or connectors in the high-voltage circuit, or a malfunctioning Battery Energy Control Module (BECM).
4. Can I still drive my Buick with a P1BFE code?
It’s not recommended to drive the vehicle, as high-voltage issues can be dangerous and may cause further damage to the hybrid system.
5. How do I diagnose a P1BFE code on a Buick?
Diagnosis involves using a scan tool to verify the code, inspecting the battery circuit wiring/connectors, and testing the voltage levels in the affected circuit.
6. How is code P1BFE fixed on a Buick?
Repairs may include replacing a defective battery module, repairing damaged wiring, or reprogramming/replacing the Battery Energy Control Module.
7. What tools are needed to troubleshoot a P1BFE code?
You’ll need a professional-grade scan tool capable of reading hybrid system codes, a multimeter for voltage testing, and possibly specialized tools for high-voltage systems.
8. How much does it cost to repair a P1BFE code in a Buick?
Repair costs vary widely depending on the issue, but replacing a battery module or BECM can cost between $500 and $3,000, plus labor.
9. Can a P1BFE code be cleared without repairs?
Clearing the code without addressing the underlying issue is not recommended, as the problem will likely return and could worsen.
10. Is the P1BFE code specific to Buick vehicles?
While P1BFE can appear in other hybrid or electric vehicles, its exact meaning and repair process may differ depending on the manufacturer.
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