OBD Guide

C105B

Abnormality In Rear Right Wheel Outlet Valve System

C105B is an OBD-II diagnostic trouble code meaning: Abnormality In Rear Right Wheel Outlet Valve System. Common causes: rear right wheel exhaust valve malfunction, open or short circuit in the wiring harness to the valve. Estimated repair cost: $56–167.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • ABS/ESP warning light comes on
  • Deterioration in braking performance
  • The car may pull to the side when braking
  • Activation of the emergency mode of the stabilization system

Causes

  • Rear right wheel exhaust valve malfunction
  • Open or short circuit in the wiring harness to the valve
  • Problems with the ABS/ESP hydraulic unit
  • ABS control module malfunction

How to Fix

  1. Check valve resistance (must meet specification)
  2. Inspect the wiring harness for damage
  3. Check voltage at valve connector
  4. Diagnose the ABS/ESP hydraulic unit on a stand
  5. Replace valve or wiring harness if necessary

Related codes

FAQ

What does the C105B code mean?

C105B is an OBD-II diagnostic trouble code that indicates: Abnormality In Rear Right Wheel Outlet Valve System

What causes a C105B error code?

The most common causes of C105B include: Rear right wheel exhaust valve malfunction; Open or short circuit in the wiring harness to the valve; Problems with the ABS/ESP hydraulic unit; ABS control module malfunction.

How do I fix a C105B diagnostic trouble code?

To fix C105B: Check valve resistance (must meet specification). Inspect the wiring harness for damage. Check voltage at valve connector. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with C105B?

Limited driving only, diagnose soon

How much does it cost to fix C105B?

The estimated repair cost for C105B is $56–167. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat