OBD Guide

B3675

Movable Roof Control Valve 2 Circuit

B3675 is an OBD-II diagnostic trouble code meaning: Movable Roof Control Valve 2 Circuit. Common causes: open or short circuit in control circuit, solenoid valve malfunction. Estimated repair cost: $56–167.

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

Symptoms

  • The movable roof or sunroof does not work
  • Roof fault indicator flashes
  • The roof opens/closes intermittently

Causes

  • Open or short circuit in control circuit
  • Solenoid valve malfunction
  • Problems with the roof control unit
  • Contact corrosion
  • Mechanical damage to the wiring harness

How to Fix

  1. Check the integrity of the wiring harness and contacts
  2. Test the solenoid valve for functionality
  3. Check control circuit voltage
  4. Replace faulty valve or wiring
  5. Update or replace the control unit (if necessary)

Related codes

Error B3675 by Vehicle Brand

FAQ

What does the B3675 code mean?

B3675 is an OBD-II diagnostic trouble code that indicates: Movable Roof Control Valve 2 Circuit

What causes a B3675 error code?

The most common causes of B3675 include: Open or short circuit in control circuit; Solenoid valve malfunction; Problems with the roof control unit; Contact corrosion.

How do I fix a B3675 diagnostic trouble code?

To fix B3675: Check the integrity of the wiring harness and contacts. Test the solenoid valve for functionality. Check control circuit voltage. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B3675?

Limited driving only, diagnose soon

How much does it cost to fix B3675?

The estimated repair cost for B3675 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat