OBD Guide
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C1451

Motor Drive Permission Malfunction

C1451 is an OBD-II diagnostic trouble code meaning: Motor Drive Permission Malfunction. Common causes: open or short circuit in wiring harness, srs control unit malfunction. Estimated repair cost: $56–167.

Severity
⚠️ Medium
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$56–167 (est.)

Symptoms

  • The airbag malfunction indicator is on
  • Problems starting the engine
  • Reduced effectiveness of the passive safety system

Causes

  • Open or short circuit in wiring harness
  • SRS control unit malfunction
  • Poor contact in connectors
  • Problems with power supply to the SRS unit

How to Fix

  1. Check wiring harness for damage
  2. Diagnose the SRS control unit
  3. Check contacts in connectors
  4. Replace damaged components

Related codes

B0001B0002B0100

FAQ

What does the C1451 code mean?

C1451 is an OBD-II diagnostic trouble code that indicates: Motor Drive Permission Malfunction

What causes a C1451 error code?

The most common causes of C1451 include: Open or short circuit in wiring harness; SRS control unit malfunction; Poor contact in connectors; Problems with power supply to the SRS unit.

How do I fix a C1451 diagnostic trouble code?

To fix C1451: Check wiring harness for damage. Diagnose the SRS control unit. Check contacts in connectors. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with C1451?

Do not drive — repair immediately

How much does it cost to fix C1451?

The estimated repair cost for C1451 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat