OBD Guide
ENFRDEESPT

P1FDF

Hybrid/EV Battery Interface Control Module 1 Voltage Sensor Circuit High Voltage

P1FDF is an OBD-II diagnostic trouble code meaning: Hybrid/EV Battery Interface Control Module 1 Voltage Sensor Circuit High Voltage. Common causes: control module voltage sensor malfunction, damaged wiring or poor contact in the circuit. Estimated repair cost: $56–278.

Severity
🔴 High
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$56–278 (est.)

Symptoms

  • Check Engine light comes on
  • Hybrid system power reduction
  • Error message on the dashboard
  • Possible transition to emergency mode
  • Problems with charging a high-voltage battery

Causes

  • Control module voltage sensor malfunction
  • Damaged wiring or poor contact in the circuit
  • Problems with the Battery Interface Control Module
  • Short circuit in the sensor circuit
  • Problems with high voltage battery

How to Fix

  1. Check the integrity of the wiring and connections in the sensor circuit
  2. Check the voltage at the sensor and compare with normalized values
  3. Test the control module voltage sensor
  4. Check the operation of the battery interface control module
  5. If necessary, replace faulty components
  6. Repair only from an authorized dealer

Related codes

P1FDEP1FE0P0AA6

FAQ

What does the P1FDF code mean?

P1FDF is an OBD-II diagnostic trouble code that indicates: Hybrid/EV Battery Interface Control Module 1 Voltage Sensor Circuit High Voltage

What causes a P1FDF error code?

The most common causes of P1FDF include: Control module voltage sensor malfunction; Damaged wiring or poor contact in the circuit; Problems with the Battery Interface Control Module; Short circuit in the sensor circuit.

How do I fix a P1FDF diagnostic trouble code?

To fix P1FDF: Check the integrity of the wiring and connections in the sensor circuit. Check the voltage at the sensor and compare with normalized values. Test the control module voltage sensor. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P1FDF?

Do not drive — repair immediately

How much does it cost to fix P1FDF?

The estimated repair cost for P1FDF is $56–278. Actual cost depends on your vehicle, location, and labor rates.

FRDEESPT

See also: Russian version · NationStat