OBD Guide
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B2538

Abnormal Roof Drive Motor Right Pulse

B2538 is an OBD-II diagnostic trouble code meaning: Abnormal Roof Drive Motor Right Pulse. Common causes: side curtain motor jammed, open or shorted wiring harness. Estimated repair cost: $167–389.

Severity
⚠️ Medium
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$167–389 (est.)

Symptoms

  • The SRS light on the dashboard is on
  • No side curtain response when testing the system
  • Error message in diagnostic scanner

Causes

  • Side curtain motor jammed
  • Open or shorted wiring harness
  • Motor fault
  • Problems with the SRS control unit

How to Fix

  1. Carry out diagnostics with a scanner to clarify the nature of the malfunction
  2. Check the integrity of the wiring harness to the right electric motor
  3. Check the mechanical operation of the curtain manually (if available)
  4. Measure resistance and power at the motor connector
  5. If necessary, replace the electric motor or restore the wiring

Related codes

B2537B2539B2540

FAQ

What does the B2538 code mean?

B2538 is an OBD-II diagnostic trouble code that indicates: Abnormal Roof Drive Motor Right Pulse

What causes a B2538 error code?

The most common causes of B2538 include: Side curtain motor jammed; Open or shorted wiring harness; Motor fault; Problems with the SRS control unit.

How do I fix a B2538 diagnostic trouble code?

To fix B2538: Carry out diagnostics with a scanner to clarify the nature of the malfunction. Check the integrity of the wiring harness to the right electric motor. Check the mechanical operation of the curtain manually (if available). For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B2538?

Do not drive — repair immediately

How much does it cost to fix B2538?

The estimated repair cost for B2538 is $167–389. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat