B1128 - Driver Side Door Lock Switch Signal Error
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
How do I fix code B1128?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.
How much do you know about cars?
Take the AutoCodes.com automotive tests and turbo-charge your car repair knowledge
Cost of diagnosing the B1128 code
Labor: 1.0The cost of diagnosing the B1128 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.
- Engine Light ON (or Service Engine Soon Warning Light)
B1128 DescriptionThe 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.
More InformationNeed more information on how to fix the B1128 code?
Get Access to Factory Service Manuals
Information for specific makes
Need more help?Get the B1128 code diagnosed by a professional: Find a repair shop in your area
CommentsHelp us improve AutoCodes.com. Leave a comment below or tell us if the information above help you fix the code. What are the symptoms on your vehicle for the B1128 code? Have you replaced any parts?
Any information is appreciated. Thanks