P1B4E
Hybrid/Electric Vehicle Battery 36 Circuit Performance
P1B4E is an OBD-II diagnostic trouble code meaning: Hybrid/Electric Vehicle Battery 36 Circuit Performance. Common causes: degradation or malfunction of battery cell no. 36, poor contact in cell circuit connectors. Estimated repair cost: $133–944.
Symptoms
- Reduced motor power
- Reducing electric range
- The Check Engine or Hybrid light comes on
- Forced operation on internal combustion engines in hybrid models
- Reduced efficiency of regenerative braking
Causes
- Degradation or malfunction of battery cell No. 36
- Poor contact in cell circuit connectors
- Corrosion of current-carrying elements
- Faulty cell balancing system
- Damage to the test wiring harness
How to Fix
- Diagnostics of the state of cell No. 36 using a scanner
- Checking connections and contacts in the cell circuit
- Measurement of cell voltage and internal resistance
- Replacing a faulty battery module if necessary
- Battery Management Module (BMS) Software Update
Related codes
FAQ
What does the P1B4E code mean?
P1B4E is an OBD-II diagnostic trouble code that indicates: Hybrid/Electric Vehicle Battery 36 Circuit Performance
What causes a P1B4E error code?
The most common causes of P1B4E include: Degradation or malfunction of battery cell No. 36; Poor contact in cell circuit connectors; Corrosion of current-carrying elements; Faulty cell balancing system.
How do I fix a P1B4E diagnostic trouble code?
To fix P1B4E: Diagnostics of the state of cell No. 36 using a scanner. Checking connections and contacts in the cell circuit. Measurement of cell voltage and internal resistance. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P1B4E?
Limited driving only, diagnose soon
How much does it cost to fix P1B4E?
The estimated repair cost for P1B4E is $133–944. Actual cost depends on your vehicle, location, and labor rates.
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