OBD Guide

P0EFB

Battery Charger A Input Voltage Sensor C Circuit

P0EFB is an OBD-II diagnostic trouble code meaning: Battery Charger A Input Voltage Sensor C Circuit. Common causes: input voltage sensor fault, open or short circuit in the sensor circuit. Estimated repair cost: $56–167.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • Check Engine light comes on
  • Problems with charging a high-voltage battery
  • Reduced performance of the hybrid system
  • System transition to emergency mode
  • Error message on display

Causes

  • Input voltage sensor fault
  • Open or short circuit in the sensor circuit
  • Poor contact in sensor connectors
  • Corroded contacts or damaged wiring
  • Battery management module malfunction

How to Fix

  1. Check the integrity of the sensor wiring and connectors
  2. Check the resistance and voltage at the sensor
  3. Clean contacts from corrosion if necessary
  4. Replace faulty input voltage sensor
  5. Check and replace the battery management module if necessary

Related codes

Error P0EFB by Vehicle Brand

FAQ

What does the P0EFB code mean?

P0EFB is an OBD-II diagnostic trouble code that indicates: Battery Charger A Input Voltage Sensor C Circuit

What causes a P0EFB error code?

The most common causes of P0EFB include: Input voltage sensor fault; Open or short circuit in the sensor circuit; Poor contact in sensor connectors; Corroded contacts or damaged wiring.

How do I fix a P0EFB diagnostic trouble code?

To fix P0EFB: Check the integrity of the sensor wiring and connectors. Check the resistance and voltage at the sensor. Clean contacts from corrosion if necessary. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P0EFB?

Limited driving only, diagnose soon

How much does it cost to fix P0EFB?

The estimated repair cost for P0EFB is $56–167. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat