The remote function module sees the right rear unlock pull switch signal stuck high
What it means
B10C4. The remote function module sees the right rear unlock pull switch signal stuck high. That door may not unlock from its pull switch.
Findings, check these first
- Faulty right rear unlock pull switch
- Short to voltage in the switch circuit
- Chafed switch wiring
- Poor connector at the switch or module
- Faulty remote function actuator module
Standard procedure
- Confirm the code and test the right rear unlock pull switch
- Inspect the switch and its connector
- Check the switch circuit for a short to voltage
- Verify the door lock actuator operation
- Replace the failed switch 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.
- B10C4 FORD Right Rear Unlock Pull Switch 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.
- B10c4 Ford - Right Rear Unlock Pull Switch 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).
Last updated 2026-09-29.
Report a correction for B10C4. Include your vehicle, the issue and a source if you have one.