OBD Guide
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C1935

Front Control Board Overheat

C1935 is an OBD-II diagnostic trouble code meaning: Front Control Board Overheat. Common causes: front board power supply fault, short circuit in wiring harness. Estimated repair cost: $111–333.

Severity
🔴 High
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$111–333 (est.)

Symptoms

  • Airbag light is on
  • The SRS system may turn off
  • Possible false alarms of sensors

Causes

  • Front board power supply fault
  • Short circuit in wiring harness
  • Poor contact or corrosion of connectors
  • Overheating due to external factors (for example, proximity to hot parts)

How to Fix

  1. Check wiring harness and connectors for damage
  2. Measure the voltage in the front board power supply circuit
  3. Check the cooling and ventilation system around the board
  4. Replace front control board if necessary

Related codes

B0010B0011B0020

FAQ

What does the C1935 code mean?

C1935 is an OBD-II diagnostic trouble code that indicates: Front Control Board Overheat

What causes a C1935 error code?

The most common causes of C1935 include: Front board power supply fault; Short circuit in wiring harness; Poor contact or corrosion of connectors; Overheating due to external factors (for example, proximity to hot parts).

How do I fix a C1935 diagnostic trouble code?

To fix C1935: Check wiring harness and connectors for damage. Measure the voltage in the front board power supply circuit. Check the cooling and ventilation system around the board. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with C1935?

Do not drive — repair immediately

How much does it cost to fix C1935?

The estimated repair cost for C1935 is $111–333. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat