OBD Guide
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C1346

Rear Low Frequency Initiator Channel Failure

C1346 is an OBD-II diagnostic trouble code meaning: Rear Low Frequency Initiator Channel Failure. Common causes: open or short circuit in wiring harness, contact corrosion. Estimated repair cost: $56–167.

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

Symptoms

  • Airbag light is on
  • Security error message on dashboard
  • Malfunction of seat belt pretensioners

Causes

  • Open or short circuit in wiring harness
  • Contact corrosion
  • Low frequency initiator fault
  • Problems with the SRS control unit

How to Fix

  1. Diagnose the SRS system using a scanner
  2. Visually inspect the wiring harness and contacts for damage
  3. Check the resistance in the low-frequency initiator circuit
  4. Replace faulty components (initiator, wiring harness, control unit)
  5. Reset the error and check the system operation

Related codes

B1346B1347B1348

FAQ

What does the C1346 code mean?

C1346 is an OBD-II diagnostic trouble code that indicates: Rear Low Frequency Initiator Channel Failure

What causes a C1346 error code?

The most common causes of C1346 include: Open or short circuit in wiring harness; Contact corrosion; Low frequency initiator fault; Problems with the SRS control unit.

How do I fix a C1346 diagnostic trouble code?

To fix C1346: Diagnose the SRS system using a scanner. Visually inspect the wiring harness and contacts for damage. Check the resistance in the low-frequency initiator circuit. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with C1346?

Do not drive — repair immediately

How much does it cost to fix C1346?

The estimated repair cost for C1346 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat