Pedal Forward / Rearward Potentiometer Feedback Circuit Short to Battery
Table of contents
B1991 LINCOLN Possible Causes
- Faulty Adjustable Pedal Motor
- Adjustable Pedal Motor harness is open or shorted
- Adjustable Pedal Motor circuit poor electrical connection
How do I fix code B1991 LINCOLN?
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.
Cost of diagnosing the B1991 LINCOLN code
The cost of diagnosing the B1991 LINCOLN 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)
B1991 LINCOLN Description
he Driver Seat Module (DSM) uses a Hall-effect switch attached to the pedal motor to identify the current pedal position. The DSM sends a reference voltage through the Hall-effect switch and back to the DSM along the signal return circuit.
When 1 or more of the following Diagnostic Trouble Code (DTC) is set, the adjustable pedals will enter a jog mode. When the pedals are in jog mode, the memory system recall will not function from either the Remote Keyless Entry (RKE) transmitter or the memory SET switch buttons. When the pedals are actuated using the adjustable pedal switch, the motor will move the pedals for one second in the direction selected regardless of the length of time the button is actually pressed.
If the DSM detects a short to voltage on the circuit during normal operation or an on-demand self test and without any pedal switch input, DTC B1991 will be set.