P0B20
Hybrid/EV Battery Pack Voltage Sense D Circuit Low
P0B20 is an OBD-II diagnostic trouble code meaning: Hybrid/EV Battery Pack Voltage Sense D Circuit Low. Common causes: damage to wiring or connectors, voltage control module malfunction. Estimated repair cost: $56–333.
Symptoms
- Reduced performance of the hybrid system
- Dashboard warning
- Battery charging problems
- The car may go into emergency mode
- Reducing electric range
Causes
- Damage to wiring or connectors
- Voltage control module malfunction
- Problems with the hybrid battery itself
- Malfunction of the main hybrid system controller
- Contact corrosion
How to Fix
- Check the integrity of the wiring and connectors
- Check voltage at all measuring points
- Test the voltage control module
- Check the condition of the hybrid battery
- If necessary, replace faulty components
Related codes
Error P0B20 by Vehicle Brand
FAQ
What does the P0B20 code mean?
P0B20 is an OBD-II diagnostic trouble code that indicates: Hybrid/EV Battery Pack Voltage Sense D Circuit Low
What causes a P0B20 error code?
The most common causes of P0B20 include: Damage to wiring or connectors; Voltage control module malfunction; Problems with the hybrid battery itself; Malfunction of the main hybrid system controller.
How do I fix a P0B20 diagnostic trouble code?
To fix P0B20: Check the integrity of the wiring and connectors. Check voltage at all measuring points. Test the voltage control module. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P0B20?
Do not drive — repair immediately
How much does it cost to fix P0B20?
The estimated repair cost for P0B20 is $56–333. Actual cost depends on your vehicle, location, and labor rates.
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