OBD Guide
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B14FC

Low Side Driver 5

B14FC is an OBD-II diagnostic trouble code meaning: Low Side Driver 5. Common causes: open circuit or short circuit in the wiring harness (harness), solenoid valve (solenoid) malfunction. Estimated repair cost: $56–167.

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

Symptoms

  • The airbag light is on
  • Restraint system disabled
  • The error is recorded in the ECU memory

Causes

  • Open circuit or short circuit in the wiring harness (harness)
  • Solenoid valve (solenoid) malfunction
  • Problem with the passive safety ECU
  • Low voltage on-board network
  • Contact corrosion

How to Fix

  1. Check the integrity of the wiring harness to driver No. 5
  2. Check the resistance and insulation of the circuit
  3. Check contacts and connectors for corrosion
  4. Test the functionality of the driver itself
  5. If necessary, replace the faulty component

Related codes

B14FDB14FEB1420

FAQ

What does the B14FC code mean?

B14FC is an OBD-II diagnostic trouble code that indicates: Low Side Driver 5

What causes a B14FC error code?

The most common causes of B14FC include: Open circuit or short circuit in the wiring harness (harness); Solenoid valve (solenoid) malfunction; Problem with the passive safety ECU; Low voltage on-board network.

How do I fix a B14FC diagnostic trouble code?

To fix B14FC: Check the integrity of the wiring harness to driver No. 5. Check the resistance and insulation of the circuit. Check contacts and connectors for corrosion. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B14FC?

Do not drive — repair immediately

How much does it cost to fix B14FC?

The estimated repair cost for B14FC is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat