OBD Guide
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C1854

Traction Motor Temperature Out of Range

C1854 is an OBD-II diagnostic trouble code meaning: Traction Motor Temperature Out of Range. Common causes: traction motor temperature sensor fault, problems with the cooling system (coolant leak, fan not working). Estimated repair cost: $56–167.

Severity
🔴 High
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • Reduced engine power
  • The vehicle goes into emergency mode
  • Check Engine Light Illuminates
  • Engine overheating

Causes

  • Traction motor temperature sensor fault
  • Problems with the cooling system (coolant leak, fan not working)
  • Motor overload
  • Malfunction of the control unit (ECU)

How to Fix

  1. Check the coolant level and condition of the cooling system
  2. Diagnose the traction motor temperature sensor
  3. Check the operation of the cooling fan
  4. Scan the control unit for other errors
  5. If necessary, replace the temperature sensor or other faulty components

Related codes

P0A80P0A7FP0A90

FAQ

What does the C1854 code mean?

C1854 is an OBD-II diagnostic trouble code that indicates: Traction Motor Temperature Out of Range

What causes a C1854 error code?

The most common causes of C1854 include: Traction motor temperature sensor fault; Problems with the cooling system (coolant leak, fan not working); Motor overload; Malfunction of the control unit (ECU).

How do I fix a C1854 diagnostic trouble code?

To fix C1854: Check the coolant level and condition of the cooling system. Diagnose the traction motor temperature sensor. Check the operation of the cooling fan. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with C1854?

Limited driving only, diagnose soon

How much does it cost to fix C1854?

The estimated repair cost for C1854 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat