AutoCodes – Generic – B1218

B1218 Code - Transmitter Identification Code

Quick Answer

The Remote Keyless Entry (RKE) feature is controlled by the Tire Pressure Monitor (TPM) module and the Body Control Module (BCM). Common causes include Reprogram Integrated Key Transponder (IKT), Faulty Integrated Key Transponder (IKT). Severity is Low - monitor the vehicle and repair when practical. The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

What it means: B1218 indicates Transmitter Identification Code.
Common causes: Common causes include Reprogram Integrated Key Transponder (IKT), Faulty Integrated Key Transponder (IKT).
Severity: Low - monitor the vehicle and repair when practical.
Can I drive?: The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

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Code Popularity 18,732

How popular is this code, among other codes? Low

Repair Importance Level

Low (Monitor) (1 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Nov 19, 2024

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code B1218 Description

The Remote Keyless Entry (RKE) feature is controlled by the Tire Pressure Monitor (TPM) module and the Body Control Module (BCM). When a button is pressed on an Integrated Key Transponder (IKT) the Transmitter Identification Code (TIC) and RKE command is received by the internal TPM module antenna. If the TPM module determines that it is a valid and programmed TIC, it sends the RKE command and TIC to the BCM over the MS-CAN. When the BCM receives the RKE command, it carries out the command by controlling the door locks or activating the horn and turn signals for the panic alarm. The RKE transmitters and the BCM also utilize a rolling code to prevent the code from being captured by a code grabber. The system advances the counter in the RKE transmitter and the BCM every time an RKE transmitter button is pressed. A Diagnostic Trouble Code (DTC) that sets when the BCM detects an invalid TIC from an IKT.

OBDII Code B1218 - Transmitter Identification Code - AutoCodes.com — B1218 Code - Transmitter Identification Code

What does this mean?

What are the Possible Causes of the DTC B1218?

Reprogram Integrated Key Transponder (IKT)
Faulty Integrated Key Transponder (IKT)

How to Fix the DTC B1218?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What does this mean?

Code Tech Notes

B1218:44 Transmitter Identification Code Data Memory Failure
B1218:51 Transmitter Identification Code Not Programmed
B1218:81 Transmitter Identification Code Invalid Serial Data Receive

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B1218 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the B1218 code?

Need more information on how to fix the B1218 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1218 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B1218 Ford — Transmitter Identification Code
B1218 Lincoln — Transmitter Identification Code
B1218 Mercury — Transmitter Identification Code

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about B1218 Code

1. What does OBDII code B1218 mean?

The code B1218 refers to "Transmitter Identification Code" in the vehicle's system.

2. What are the common symptoms of OBDII code B1218?

Common symptoms of code B1218 may include issues with keyless entry, remote start, or other related functions not working properly.

3. What can cause OBDII code B1218 to trigger?

Code B1218 can be triggered by a malfunction in the transmitter identification code system, such as a faulty key fob or receiver module.

4. How can I diagnose OBDII code B1218?

Diagnosing code B1218 typically involves using a diagnostic scanner to read the code, checking the key fob batteries, and inspecting the receiver module for any visible damage.

5. How do I repair OBDII code B1218?

To repair code B1218, you may need to replace the key fob batteries, reprogram the key fob, or replace the receiver module if it is faulty.

6. Can I still drive my vehicle with OBDII code B1218?

In most cases, it is safe to drive the vehicle with code B1218, but it is recommended to address the issue promptly to avoid any inconvenience with keyless entry functions.

7. How much does it cost to repair OBDII code B1218?

The cost of repairing code B1218 can vary depending on the specific cause of the issue and whether any parts need to be replaced. It is advisable to consult a professional for an accurate estimate.

8. Will resetting the OBDII code B1218 make it go away permanently?

Resetting the code may temporarily clear the error, but if the underlying issue is not addressed, the code is likely to reappear. It is important to diagnose and repair the root cause of the problem.

9. Can a DIY enthusiast fix OBDII code B1218 at home?

Depending on the cause of the code, some DIY enthusiasts may be able to address code B1218 at home by following repair guides or tutorials. However, complex issues may require professional assistance.

10. Is OBDII code B1218 a common problem in vehicles?

Code B1218 related to transmitter identification code issues is not as common as some other OBDII codes, but it can occur in vehicles equipped with keyless entry or remote start systems.