P1BF5 Code - Hybrid/Electric Vehicle Battery 91 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
- P1BF5 indicates Hybrid/Electric Vehicle Battery 91 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 P1BF5 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 P1BF5?
- Faulty Hybrid/Electric Vehicle Battery Pack
- Faulty Hybrid/Electric Vehicle Battery Interface Control Module
How to Fix the DTC P1BF5?
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 P1BF5 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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Information for Specific Makes
- P1BF5 Buick — Hybrid/Electric Vehicle Battery 91 Circuit High Voltage
- P1BF5 Cadillac — Hybrid/Electric Vehicle Battery 91 Circuit High Voltage
- P1BF5 Chevrolet — Hybrid/Electric Vehicle Battery 91 Circuit High Voltage
- P1BF5 GMC — Hybrid/Electric Vehicle Battery 91 Circuit High Voltage
- P1BF5 Saturn — Hybrid/Electric Vehicle Battery 91 Circuit High Voltage
Frequently Asked Questions about P1BF5 Code
What does the OBDII code P1BF5 mean?
This code indicates a high voltage issue in the Hybrid/Electric Vehicle Battery 91 circuit, typically related to the battery module or its associated wiring.
What are the common symptoms of code P1BF5?
Symptoms may include reduced hybrid or EV performance, warning lights on the dashboard, and possible loss of battery assist functionality.
What causes the P1BF5 code to be triggered?
This code can be caused by faulty battery cells, damaged wiring, loose electrical connections, or issues in the battery control module.
Can I drive my vehicle with the P1BF5 code?
Driving with this code may be possible, but it is not recommended as it could lead to further damage or reduced performance of the hybrid/electric system.
How is the P1BF5 code diagnosed?
Technicians use a scan tool to read the code, inspect the battery and wiring, and perform voltage tests to pinpoint the issue.
What repairs are needed to fix the P1BF5 code?
Repairs may include replacing damaged battery cells, repairing or replacing wiring, or recalibrating the battery control module.
Will clearing the P1BF5 code solve the problem?
Clearing the code without addressing the underlying issue will not fix the problem, and the code is likely to return.
Is the P1BF5 code related to the high voltage battery?
Yes, this code specifically points to a high voltage issue in the Hybrid/Electric Vehicle Battery 91 circuit.
How much does it cost to repair the P1BF5 code?
Costs vary depending on the cause but can range from a simple wiring repair to a more expensive battery module replacement.
Can a weak 12V battery cause the P1BF5 code?
While unlikely, a weak 12V battery can sometimes lead to electrical discrepancies that trigger hybrid system-related codes.
Discuss the causes and fixes for P1BF5 OBDII Code
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