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B1854: Climate Control Air Temperature Internal Sensor Motor Circuit Open

OTHER
System
Manufacturer-Specific Body

What Does B1854 Mean?

B1854 is a manufacturer-specific diagnostic trouble code: Climate Control Air Temperature Internal Sensor Motor Circuit Open. 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 B1854

Frequently Asked Questions

What does B1854 mean?
Climate Control Air Temperature Internal Sensor Motor Circuit Open. This is a manufacturer-specific code for OTHER vehicles.
Which vehicles get code B1854?
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.

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