The body control module detects an invalid transmitter identification code from the integrated key transponder
What it means
B1218. The body control module detects an invalid transmitter identification code from the integrated key transponder. The remote keyless entry may not lock, unlock or start the vehicle..
Findings, check these first
- Integrated key transponder needs reprogramming
- Faulty integrated key transponder
- Key not programmed to the body control module
Standard procedure
- Confirm the code and check the key programming
- Reprogram the integrated key transponder
- Inspect the key battery and transmitter
- Verify the body control module stored keys
- Replace the failed key or module after tests
Code lookup
Type a code above, or start from a symptom or a common code.
Press / to jump to the box. Ford-enhanced powertrain, body, chassis and network codes. Generic P0xxx codes live on OBD Codes List.
Sources and review
Review: qualified. Read the source limits below.
- B1218 FORD Code: Meaning, Causes, and Symptoms | OBD2 Codes - OBD2 Codes
live reference page (obd2-codes.co)
Supports: FORD and Ford-family meaning and likely causes for B1218
Fetched directly. B1218 reads "Transmitter Identification Code". obdii.pro carries this code only with GM clauses, so there is no Ford-family corroboration.
Last updated 2026-10-02.
Report a correction for B1218. Include your vehicle, the issue and a source if you have one.
This fault is part of the Ford PATS and no-start codes guide. It covers the family and the order to check it.