OBD Guide

P1FD6

Hybrid/EV Battery Interface Control Module 2 Voltage Sensor Circuit Low Voltage

P1FD6 is an OBD-II diagnostic trouble code meaning: Hybrid/EV Battery Interface Control Module 2 Voltage Sensor Circuit Low Voltage. Common causes: control module voltage sensor malfunction, open or short circuit in wiring harness. Estimated repair cost: $56–167.

Severity
🔴 High
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$56–167 (est.)

Symptoms

  • Check Engine light comes on
  • Hybrid system power reduction
  • Battery charging problems
  • Reducing electric range
  • Incorrect battery level readings

Causes

  • Control module voltage sensor malfunction
  • Open or short circuit in wiring harness
  • Poor connection in connectors
  • Battery management module malfunction
  • Problems with power supply to the sensor circuit

How to Fix

  1. Check the integrity of the wiring harness to the sensor
  2. Check connections and contacts in connectors
  3. Check the supply voltage of the sensor circuit
  4. Test the voltage sensor with a multimeter
  5. If necessary, replace the voltage sensor or control module

Related codes

FAQ

What does the P1FD6 code mean?

P1FD6 is an OBD-II diagnostic trouble code that indicates: Hybrid/EV Battery Interface Control Module 2 Voltage Sensor Circuit Low Voltage

What causes a P1FD6 error code?

The most common causes of P1FD6 include: Control module voltage sensor malfunction; Open or short circuit in wiring harness; Poor connection in connectors; Battery management module malfunction.

How do I fix a P1FD6 diagnostic trouble code?

To fix P1FD6: Check the integrity of the wiring harness to the sensor. Check connections and contacts in connectors. Check the supply voltage of the sensor circuit. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P1FD6?

Do not drive — repair immediately

How much does it cost to fix P1FD6?

The estimated repair cost for P1FD6 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat