AutoCodes.com | All About OBDII Engine Codes
AutoCodes - Generic - U1161

U1161 Code - Lost Communications With Front Passenger Door Module

- Code Popularity: 9,145 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
Table of contents
Share on Facebook   Share on Twitter   Share on Linkedin

What are the Possible Causes of the DTC U1161?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Faulty Front Passenger Door Module (FPDM)
  • Front Passenger Door Module harness is open or shorted
  • Front Passenger Door Module circuit poor electrical connection
⚠ Does your Car have Safety Recalls? → Check here

How to Fix the DTC U1161?

Review the 'Possible Causes' mentioned above and visually examine the corresponding wiring harness and connectors. Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.

Search for U1161 Questions and Answers: Search here →

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the U1161 code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.

What are Code Possible Symptoms?

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

Code U1161 Description

Modules connected to the class 2 serial data circuit monitor for serial data communications during normal vehicle operation. Operating information and commands are exchanged among the modules. When a module receives a message for a critical operating parameter, the module records the identification number of the module which sent the message for the state of health monitoring/node alive messages. A critical operating parameter is one which, when not received, requires that the module use a default value for that parameter. Once an identification number is learned by a module, it will monitor for that module node alive message. Each module on the class 2 serial data circuit is required to send a Node Alive message every 2 seconds. When no message is detected from a learned identification number for 5 seconds, a Diagnostic Trouble Code (DTC) U1161 is set.

OBDII Code U1161 - Lost Communications With Front Passenger Door Module - AutoCodes.com
U1161 Code - Lost Communications With Front Passenger Door Module

Need More Information on the Code?

Need more information on how to fix the U1161 code? Get Access to Factory Service Manuals

Information for Specific Makes

  • U1161 Buick Lost Communications With Front Passenger Door Module
  • U1161 Cadillac Lost Communications With Front Passenger Door Module
  • U1161 Chevrolet Lost Communications With Front Passenger Door Module
  • U1161 GMC Lost Communications With Front Passenger Door Module

Need Help with the Code?

Get the U1161 code diagnosed by a professional: Find a repair shop in your area

Code U1161 comments

Help us improve AutoCodes.com. Leave a comment below or tell us if the information above helps you fix the code. What are the symptoms on your vehicle for the U1161 code? Have you replaced any parts?
Any information is appreciated. Thanks