Door Module LIN Bus ‘A’
Table of contents
B1087 FORD Possible Causes
- Faulty Window Control Switch
- Window Control Switch harness is open or shorted
- Window Control Switch circuit poor electrical connection
- Faulty Driver Door Module (DDM)
- Faulty Passenger Door Module (PDM)
How do I fix code B1087 FORD?
Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins.
Tech Notes
- B1087:83 LIN Bus ‘A’ Value Of Signal Protection Calculation Incorrect
- B1087:86 LIN Bus ‘A’ Signal Invalid
- B1087:88 LIN Bus ‘A’ Bus Off
Cost of diagnosing the B1087 FORD code
The cost of diagnosing the B1087 FORD code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
B1087 FORD Description
The Driver Door Module (DDM) and Passenger Door Module (PDM) communicate with the corresponding Driver Rear Door Module (DRDM) and Passenger Rear Door Module (PRDM) over a dedicated Local Interconnect Network (LIN). The window control on the driver door also provides information to the DDM over the same LIN. In the event of a failure on a LIN, the power windows, power locks, and switch illumination are inoperative in the corresponding rear door. If there is a LIN failure for the DDM, the controls of the window control switch are also inoperative.