DTC P2009 Mercedes-Benz
Immobilizer-keyless Control Unit Lost Communication With Door Multiplex Control Unit
Immobilizer-keyless Control Unit Lost Communication With Door Multiplex Control Unit
Description
Poor communication between the Immobilizer-keyless Control Unit, and the Door Multiplex Control Unit. NOTE: If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A.
Cause and Solution
Perform the door multiplex control unit input test, and do all power, ground, and communication input tests. If the tests prove OK, replace the power window master switch Loose or poor connections at the door multiplex control unit and the related units
Video Guide
Diagnostic Info
- DTC Code: P2009
- Brand: Mercedes-Benz