OBD Guide
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C1735

Ignition Signal

C1735 is an OBD-II diagnostic trouble code meaning: Ignition Signal. Common causes: open or short circuit in wiring harness, squib malfunction. 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
  • Restraint system malfunction
  • System diagnostic error

Causes

  • Open or short circuit in wiring harness
  • Squib malfunction
  • Problems with the airbag control unit
  • Contact corrosion

How to Fix

  1. Check wiring harness for open or short circuit
  2. Check the condition of the squibs
  3. Diagnose the airbag control unit
  4. Clean or replace corroded contacts

Related codes

B0001B0010B0100

FAQ

What does the C1735 code mean?

C1735 is an OBD-II diagnostic trouble code that indicates: Ignition Signal

What causes a C1735 error code?

The most common causes of C1735 include: Open or short circuit in wiring harness; Squib malfunction; Problems with the airbag control unit; Contact corrosion.

How do I fix a C1735 diagnostic trouble code?

To fix C1735: Check wiring harness for open or short circuit. Check the condition of the squibs. Diagnose the airbag control unit. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with C1735?

Do not drive — repair immediately

How much does it cost to fix C1735?

The estimated repair cost for C1735 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat