OBD Guide
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P1B0C

Drive Motor 1 Control Module Hybrid Battery Voltage Isolation Sensing Circuit 2 High Voltage

P1B0C is an OBD-II diagnostic trouble code meaning: Drive Motor 1 Control Module Hybrid Battery Voltage Isolation Sensing Circuit 2 High Voltage. Common causes: damage to the insulation of high-voltage wires, hybrid battery control module malfunction. Estimated repair cost: $56–222.

Severity
🔴 High
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$56–222 (est.)

Symptoms

  • Check Engine light comes on
  • Hybrid system power reduction
  • Limiting Hybrid Mode Operation
  • Possible dashboard warnings
  • The car may go into emergency mode

Causes

  • Damage to the insulation of high-voltage wires
  • Hybrid battery control module malfunction
  • High Voltage System Grounding Problems
  • Short circuit in the insulation monitoring circuit
  • Contact corrosion in a high voltage system

How to Fix

  1. Carry out diagnostics of the high-voltage system
  2. Check the integrity of the insulation of high-voltage wires
  3. Check the condition of the hybrid battery control module
  4. Check the grounding of the high voltage system
  5. Repair only from an authorized dealer

Related codes

P1B0DP1B0EP0AA6

FAQ

What does the P1B0C code mean?

P1B0C is an OBD-II diagnostic trouble code that indicates: Drive Motor 1 Control Module Hybrid Battery Voltage Isolation Sensing Circuit 2 High Voltage

What causes a P1B0C error code?

The most common causes of P1B0C include: Damage to the insulation of high-voltage wires; Hybrid battery control module malfunction; High Voltage System Grounding Problems; Short circuit in the insulation monitoring circuit.

How do I fix a P1B0C diagnostic trouble code?

To fix P1B0C: Carry out diagnostics of the high-voltage system. Check the integrity of the insulation of high-voltage wires. Check the condition of the hybrid battery control module. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P1B0C?

Do not drive — repair immediately

How much does it cost to fix P1B0C?

The estimated repair cost for P1B0C is $56–222. Actual cost depends on your vehicle, location, and labor rates.

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