OBD Guide
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C1934

Front Metal Board Overheat

C1934 is an OBD-II diagnostic trouble code meaning: Front Metal Board Overheat. Common causes: short circuit in the passive restraint system circuit, mechanical damage to the metal plate. Estimated repair cost: $56–167.

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

Symptoms

  • The passive safety system malfunction lamp comes on
  • Reduced efficiency of the security system
  • Possible problems with airbag deployment

Causes

  • Short circuit in the passive restraint system circuit
  • Mechanical damage to the metal plate
  • Incorrect operation of temperature sensors
  • Wiring harness fault

How to Fix

  1. Check the integrity of the metal plate
  2. Diagnose an electrical circuit for a short circuit
  3. Replace damaged components
  4. Reset the error and check the system operation

Related codes

B1934B1935B1936

FAQ

What does the C1934 code mean?

C1934 is an OBD-II diagnostic trouble code that indicates: Front Metal Board Overheat

What causes a C1934 error code?

The most common causes of C1934 include: Short circuit in the passive restraint system circuit; Mechanical damage to the metal plate; Incorrect operation of temperature sensors; Wiring harness fault.

How do I fix a C1934 diagnostic trouble code?

To fix C1934: Check the integrity of the metal plate. Diagnose an electrical circuit for a short circuit. Replace damaged components. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with C1934?

Do not drive — repair immediately

How much does it cost to fix C1934?

The estimated repair cost for C1934 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat