OBD Guide
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C1171

Engine Check Signal

C1171 is an OBD-II diagnostic trouble code meaning: Engine Check Signal. Common causes: airbag circuit open, short circuit in the circuit. 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
  • Seat belt pretensioners do not work
  • Error on the dashboard

Causes

  • Airbag circuit open
  • Short circuit in the circuit
  • Squib malfunction
  • Wiring harness damage
  • Airbag control module malfunction

How to Fix

  1. Check the integrity of the airbag circuit
  2. Check squib resistance
  3. Inspect the wiring harness for damage
  4. Check the airbag control module
  5. Replace faulty components

Related codes

B0001B0002B0010

FAQ

What does the C1171 code mean?

C1171 is an OBD-II diagnostic trouble code that indicates: Engine Check Signal

What causes a C1171 error code?

The most common causes of C1171 include: Airbag circuit open; Short circuit in the circuit; Squib malfunction; Wiring harness damage.

How do I fix a C1171 diagnostic trouble code?

To fix C1171: Check the integrity of the airbag circuit. Check squib resistance. Inspect the wiring harness for damage. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with C1171?

Do not drive — repair immediately

How much does it cost to fix C1171?

The estimated repair cost for C1171 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat