P1B4F
Hybrid/Electric Vehicle Battery 36 Circuit Low Voltage
P1B4F is an OBD-II diagnostic trouble code meaning: Hybrid/Electric Vehicle Battery 36 Circuit Low Voltage. Common causes: faulty battery cell no. 36, damage to the wiring to the battery cell. Estimated repair cost: $167–556.
Symptoms
- Hybrid system power reduction
- Increased fuel consumption
- Check Engine Light Illuminates
- Reduced efficiency of regenerative braking
- Problems with charging a high-voltage battery
Causes
- Faulty battery cell No. 36
- Damage to the wiring to the battery cell
- Corrosion of contacts in the battery circuit
- Battery management module malfunction
- Problems with balancing battery cells
How to Fix
- Diagnosis of high-voltage battery condition
- Checking the voltage on battery cell No. 36
- Inspection and testing of wiring to the element
- Replacing a faulty battery cell if necessary
- Balancing battery cells after repair
Related codes
FAQ
What does the P1B4F code mean?
P1B4F is an OBD-II diagnostic trouble code that indicates: Hybrid/Electric Vehicle Battery 36 Circuit Low Voltage
What causes a P1B4F error code?
The most common causes of P1B4F include: Faulty battery cell No. 36; Damage to the wiring to the battery cell; Corrosion of contacts in the battery circuit; Battery management module malfunction.
How do I fix a P1B4F diagnostic trouble code?
To fix P1B4F: Diagnosis of high-voltage battery condition. Checking the voltage on battery cell No. 36. Inspection and testing of wiring to the element. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P1B4F?
Limited driving only, diagnose soon
How much does it cost to fix P1B4F?
The estimated repair cost for P1B4F is $167–556. Actual cost depends on your vehicle, location, and labor rates.
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