Engine-Codes - Lincoln - B1234 Lincoln

B1234 Lincoln Code - Mirror Switch Invalid Code

- Code Popularity: 468 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
Table of contents

|What are the Possible Causes of the Code B1234 Lincoln?

  • Faulty Mirror Switch
  • Mirror Switch harness is open or shorted
  • Mirror Switch circuit poor electrical connection
  • Faulty Driver Door Module (DDM)

|How to Fix the B1234 Lincoln Code?

Start by checking 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.

|What is the Cost to Diagnose the Code B1234 Lincoln?

Labor: 1.0

The cost to diagnose the B1234 Lincoln code is 1.0 hour of labor. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.

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|What are Code B1234 Lincoln Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

|What Does the B1234 Lincoln Code Mean?

Under normal operation, the exterior mirror control switch receives power and ground from the circuit. The exterior mirror control switch uses circuits to send input signals to the Driver Door Module (DDM). The DDM controls the Left (LH) exterior mirror motor movement by supplying the appropriate power and ground to circuits. The DDM communicates with the Driver Seat Module (DSM) through the Medium-Speed Controller Area Network (MS-CAN) whenever the DDM receives an input signal from the exterior mirror control switch for the Right (RH) mirror. The DSM controls the RH exterior mirror motor movement by supplying the appropriate power and ground.
The memory mirror system uses feedback potentiometers, located in the LH and RH exterior mirrors, in order to track the movement of the LH and RH exterior mirror motors. The DDM supplies the LH and RH exterior mirror feedback potentiometer reference voltage and ground through circuits. The DDM receives feedback from the LH and RH exterior mirror feedback potentiometer through left/right and up/down circuits.

B1234 Lincoln Code - Mirror Switch Invalid Code

|Need more Information on the B1234 Lincoln Code?

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|Need Help with the B1234 Lincoln Code?

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