OBD Guide

P17B4

Low Brake Solenoid

P17B4 is an OBD-II diagnostic trouble code meaning: Low Brake Solenoid. Common causes: brake solenoid malfunction, wiring harness damage. Estimated repair cost: $17–56.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$17–56 (est.)

Symptoms

  • Check Engine light comes on
  • Unstable operation of the brake system
  • Reduced braking performance
  • There may be errors in other vehicle systems

Causes

  • Brake solenoid malfunction
  • Wiring harness damage
  • Poor contact in connectors
  • Problems with the control unit
  • Short circuit in the circuit

How to Fix

  1. Check the condition of the brake solenoid
  2. Inspect the wiring harness for damage
  3. Check contacts in connectors
  4. Test the control unit
  5. Replace faulty components

Related codes

FAQ

What does the P17B4 code mean?

P17B4 is an OBD-II diagnostic trouble code that indicates: Low Brake Solenoid

What causes a P17B4 error code?

The most common causes of P17B4 include: Brake solenoid malfunction; Wiring harness damage; Poor contact in connectors; Problems with the control unit.

How do I fix a P17B4 diagnostic trouble code?

To fix P17B4: Check the condition of the brake solenoid. Inspect the wiring harness for damage. Check contacts in connectors. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P17B4?

Limited driving only, diagnose soon

How much does it cost to fix P17B4?

The estimated repair cost for P17B4 is $17–56. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat