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C1429: Input-shaft-speed input circuit failure

OTHER
System
Manufacturer-Specific Chassis

What Does C1429 Mean?

C1429 is a manufacturer-specific diagnostic trouble code: Input-shaft-speed input circuit failure. This code applies to OTHER vehicles. Unlike generic OBD-II codes, manufacturer-specific codes are defined by the vehicle maker and may only apply to certain makes and models.

Symptoms of C1429

Frequently Asked Questions

What does C1429 mean?
Input-shaft-speed input circuit failure. This is a manufacturer-specific code for OTHER vehicles.
Which vehicles get code C1429?
This code appears primarily in OTHER vehicles. Check your owner's manual or a dealer for model-specific information.
Can I fix this myself?
Manufacturer-specific codes often require a brand-specific diagnostic scanner for full data. A dealer or specialist with the right tools will diagnose it most accurately.

What To Do Next

  1. 1
    Find your vehicle above

    Click your make and model for real owner reports and common causes specific to your vehicle.

  2. 2
    Check for recalls

    Go to nhtsa.gov/recalls and enter your VIN. Free repairs if covered.

  3. 3
    Get a professional diagnosis

    A code alone doesn't identify the exact failed part. A diagnostic ($50–$150) pinpoints the root cause.

Related Codes

C1400 Traction Control Valve RF Circuit Failure C1401 Traction Control Valve RF Circuit Open C1402 Traction Control Valve RF Circuit Short To Ground C1403 Traction Control Valve RF Circuit Short To Battery C1404 Traction Control Valve Rear Circuit Failure C1405 Traction Control Valve Rear Circuit Open C1406 Traction Control Valve Rear Circuit Short To Ground C1407 Traction Control Valve Rear Circuit Short To Battery C1410 Traction Control Valve LF Circuit Failure C1411 Traction Control Valve LF Circuit Open