Engine-Codes - Mercury - B129A MERCURY

B129A MERCURY Code - LIN Bus D Signal Invalid

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3  What is this?
Table of contents

|B129A MERCURY code possible causes

  • Faulty Driver Side Windshield Wiper Motor
  • Driver Side Windshield Wiper Motor harness is open or shorted
  • Driver Side Windshield Wiper Motor circuit poor electrical connection
  • Faulty Body Control Module (BCM)

|How is the B129A MERCURY code repair?

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.

|B129A MERCURY code tech notes

B129A:86 LIN Bus D Signal Invalid
B129A:88 LIN Bus D Bus Off

|What is the cost to diagnose the B129A MERCURY code

Labor: 1.0

The cost to diagnose the B129A MERCURY 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.

|What are B129A MERCURY code possible symptoms?

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

|What is B129A MERCURY code meaning?

The Body Control Module (BCM) monitors the Central Lock Switch Illumination Circuit. The BCM sets the OBDII code when the BCM receives invalid data from the Driver Side Windshield Wiper Motor over the LIN.

|Need more information with the B129A MERCURY code?

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