OBD Guide
ENFRDEESPT

P1F5B

14 Volt Power Module Status Terminal Circuit High Voltage

P1F5B is an OBD-II diagnostic trouble code meaning: 14 Volt Power Module Status Terminal Circuit High Voltage. Common causes: 14v power module faulty, wiring harness damage. 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
  • Unstable operation of the vehicle's electrical systems
  • Problems starting the engine
  • Reduced engine power
  • Interruptions in the operation of on-board electronics

Causes

  • 14V power module faulty
  • Wiring harness damage
  • Short circuit in the circuit
  • Problems with the generator
  • Control unit malfunction

How to Fix

  1. Check the voltage in the 14V power module circuit
  2. Inspect the wiring harness for damage
  3. Check generator operation
  4. Replace the power module if necessary
  5. Test the control unit

Related codes

P1F5AP1F5C

FAQ

What does the P1F5B code mean?

P1F5B is an OBD-II diagnostic trouble code that indicates: 14 Volt Power Module Status Terminal Circuit High Voltage

What causes a P1F5B error code?

The most common causes of P1F5B include: 14V power module faulty; Wiring harness damage; Short circuit in the circuit; Problems with the generator.

How do I fix a P1F5B diagnostic trouble code?

To fix P1F5B: Check the voltage in the 14V power module circuit. Inspect the wiring harness for damage. Check generator operation. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P1F5B?

Do not drive — repair immediately

How much does it cost to fix P1F5B?

The estimated repair cost for P1F5B is $56–167. Actual cost depends on your vehicle, location, and labor rates.

FRDEESPT

See also: Russian version · NationStat