OBD Guide
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B1218

Transmitter Identification Code

B1218 is an OBD-II diagnostic trouble code meaning: Transmitter Identification Code. Common causes: open or short circuit in wiring harness, id code transmitter malfunction. Estimated repair cost: $56–167.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • Check Engine light comes on
  • Problems starting the engine
  • Unstable engine operation

Causes

  • Open or short circuit in wiring harness
  • ID code transmitter malfunction
  • Software failure in the control module

How to Fix

  1. Check the wiring harness for damage
  2. Check the functionality of the identification code transmitter
  3. Update control module software

Related codes

B1217B1219

FAQ

What does the B1218 code mean?

B1218 is an OBD-II diagnostic trouble code that indicates: Transmitter Identification Code

What causes a B1218 error code?

The most common causes of B1218 include: Open or short circuit in wiring harness; ID code transmitter malfunction; Software failure in the control module.

How do I fix a B1218 diagnostic trouble code?

To fix B1218: Check the wiring harness for damage. Check the functionality of the identification code transmitter. Update control module software. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B1218?

Limited driving only, diagnose soon

How much does it cost to fix B1218?

The estimated repair cost for B1218 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat