The remote function module sees the left front lock button signal stuck high
What it means
B10D1. The remote function module sees the left front lock button signal stuck high. That door may keep locking or ignore the lock button.
Findings, check these first
- Faulty left front door lock button
- Short to voltage in the button circuit
- Chafed button wiring
- Poor connector at the lock button
- Faulty remote function actuator module
Standard procedure
- Confirm the code and test the left front lock button
- Inspect the button and its connector
- Check the button circuit for a short to voltage
- Verify the door lock actuator operation
- Replace the failed button 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: checked against the recorded source material.
- B10D1 FORD Left Front Lock Button Signal Stuck High: Code Meaning, Causes, Symptoms, & Tech Notes | Engine-Codes.com
archived reference page (engine-codes.com via Wayback Machine)
Supports: code identity, Ford meaning and possible causes
Fetched directly. Ford title, meaning and causes match the catalog record. Model and year fitment remain curator claims.
- B10d1 Ford - Left Front Lock Button Signal Stuck High | AutoCodes.com
archived reference page (autocodes.com via Wayback Machine)
Supports: corroboration of Ford meaning and causes
Fetched directly. Same Ford text as the engine-codes page (both sites share one publisher).
Source caveat: The page title names the left front lock button while the body text names the right front lock sensor. The record follows the title, matching the code family pattern.
Last updated 2026-09-29.
Report a correction for B10D1. Include your vehicle, the issue and a source if you have one.