P0B49
Hybrid/EV Battery Voltage Sense C Circuit Intermittent/Erratic
P0B49 is an OBD-II diagnostic trouble code meaning: Hybrid/EV Battery Voltage Sense C Circuit Intermittent/Erratic. Common causes: damage to the measuring circuit wiring harness, oxidation or corrosion of contacts. Estimated repair cost: $56–167.
Symptoms
- Check engine light comes on
- Hybrid system power reduction
- Unstable operation of the power plant
- Errors in battery level readings
- Increased fuel consumption (for hybrids)
Causes
- Damage to the measuring circuit wiring harness
- Oxidation or corrosion of contacts
- Faulty battery voltage sensors
- Problems with the battery management module
- Mechanical damage to components
How to Fix
- Check the integrity of the wiring harness
- Clean and check all contacts in the circuit
- Test voltage sensors
- Check the operation of the battery management module
- Replace damaged components
Related codes
Error P0B49 by Vehicle Brand
FAQ
What does the P0B49 code mean?
P0B49 is an OBD-II diagnostic trouble code that indicates: Hybrid/EV Battery Voltage Sense C Circuit Intermittent/Erratic
What causes a P0B49 error code?
The most common causes of P0B49 include: Damage to the measuring circuit wiring harness; Oxidation or corrosion of contacts; Faulty battery voltage sensors; Problems with the battery management module.
How do I fix a P0B49 diagnostic trouble code?
To fix P0B49: Check the integrity of the wiring harness. Clean and check all contacts in the circuit. Test voltage sensors. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P0B49?
Limited driving only, diagnose soon
How much does it cost to fix P0B49?
The estimated repair cost for P0B49 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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