Engine-Codes - Lincoln - B129A LINCOLN

B129A LINCOLN - LIN Bus D Signal Invalid

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

B129A LINCOLN 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 LINCOLN 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.

Tech Notes

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

What is the cost to diagnose the B129A LINCOLN code

Labor: 1.0

The cost to diagnose the B129A LINCOLN code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.
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Possible Symptoms

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

B129A LINCOLN 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.

More Information

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