Engine-Codes
 
OBDII Code List
 
B1128

B1128 - Driver Side Door Lock Switch Signal Error

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3  What does this mean?

B1128 Possible Causes

  • Faulty Driver Side Door Lock Switch
  • Driver Side Door Lock Switch harness is open or shorted
  • Driver Side Door Lock Switch circuit poor electrical connection
  • Faulty Door Multiplex Control Unit
  What does this mean?

First diagnose B1128 code

    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 terminals.

Cost of diagnosing the B1128 code

    Labor: 1.0

    The cost of diagnosing the B1128 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.

B1128 Possible Symptoms

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

B1128 Meaning

The Door Multiplex Control Unit monitors the Driver Side Door Lock Switch. The Door Multiplex Control Unit sets the OBDII code when the Driver Side Door Lock Switch is not to factory specifications.
OBDII Code B1128 - Driver Side Door Lock Switch Signal Error - Engine-Codes.com

B1128 More Information

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