OBD Guide

C1AB7

Blind Spot Monitor Slave Module

C1AB7 is an OBD-II diagnostic trouble code meaning: Blind Spot Monitor Slave Module. Common causes: bsm slave module fault, wiring harness damage. Estimated repair cost: $111–333.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$111–333 (est.)

Symptoms

  • No blind spot warnings
  • False alarms of the system
  • Error message on the dashboard

Causes

  • BSM slave module fault
  • Wiring harness damage
  • Power or grounding problems
  • Interference from other electronic systems

How to Fix

  1. Diagnose the BSM module using a scanner
  2. Check the integrity of the wiring harness and connectors
  3. Check power supply and grounding of the module
  4. If necessary, replace the BSM module

Related codes

FAQ

What does the C1AB7 code mean?

C1AB7 is an OBD-II diagnostic trouble code that indicates: Blind Spot Monitor Slave Module

What causes a C1AB7 error code?

The most common causes of C1AB7 include: BSM slave module fault; Wiring harness damage; Power or grounding problems; Interference from other electronic systems.

How do I fix a C1AB7 diagnostic trouble code?

To fix C1AB7: Diagnose the BSM module using a scanner. Check the integrity of the wiring harness and connectors. Check power supply and grounding of the module. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with C1AB7?

Limited driving only, diagnose soon

How much does it cost to fix C1AB7?

The estimated repair cost for C1AB7 is $111–333. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat