OBD Guide
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C1270

Temperature / Overload

C1270 is an OBD-II diagnostic trouble code meaning: Temperature / Overload. Common causes: overheating of the wiring harness (harness) of the passive safety system, malfunction of the squib or pretensioner. Estimated repair cost: $56–222.

Severity
🔴 High
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$56–222 (est.)

Symptoms

  • Airbag light is on
  • Restraint system disabled
  • The error does not disappear after restarting the engine

Causes

  • Overheating of the wiring harness (harness) of the passive safety system
  • Malfunction of the squib or pretensioner
  • Short circuit or break in the circuit
  • Problems with the restraint system ECU

How to Fix

  1. Check the wiring harness for damage or overheating.
  2. Diagnose resistance in the passive safety system circuit
  3. Check the serviceability of squibs and pretensioners
  4. Replace damaged components if necessary
  5. Reset the error and check if it returns

Related codes

B0020B0021B0050

FAQ

What does the C1270 code mean?

C1270 is an OBD-II diagnostic trouble code that indicates: Temperature / Overload

What causes a C1270 error code?

The most common causes of C1270 include: Overheating of the wiring harness (harness) of the passive safety system; Malfunction of the squib or pretensioner; Short circuit or break in the circuit; Problems with the restraint system ECU.

How do I fix a C1270 diagnostic trouble code?

To fix C1270: Check the wiring harness for damage or overheating.. Diagnose resistance in the passive safety system circuit. Check the serviceability of squibs and pretensioners. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with C1270?

Do not drive — repair immediately

How much does it cost to fix C1270?

The estimated repair cost for C1270 is $56–222. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat