Cadillac U1511: Inter-device Dedicated Bus Lost Communication With Device 1
Is your scanner showing Cadillac U1511?
No worries. We'll show you what it means and how to deal with it.
Cadillac U1511: Inter-device Dedicated Bus Lost Communication With Device 1
OVERVIEWWhat Does The Cadillac U1511 Code Mean?
- Both DTC U1511 and U1512 will set if an open/high resistance in the local interconnect network bus circuit is between the door module and the first splice.
- Only 1 DTC (U1511 or U1512) will set if an open/high resistance in the local interconnect net
Recommended Parts
Below are some recommended auto parts to help you address the trouble code affecting your vehicle and get it running smoothly again:
>>> WORKPRO 582-piece Crimp Terminals, Wire Connectors, Heat Shrink Tube, Electrical Repair Kit
>>> GM Genuine Parts Electronic Compass Module
Note: During the purchasing process, please check carefully whether the part you want to buy fits your car!
Reference Sources
- GM, 2013, Service Bullettin – False Low Beam Failure Message Displayed.
- GM, 2015, Service Bullettin – Service Adaptive Headlamp Message Displayed, DTCs B257C and B257D.
- GM, 2017, Service Bullettin – Active Shutters Inoperative, Malfunction Indicator Lamp (MIL) Illuminated – DTCs P059F, U1501, U1510,
U1511 Set. - GM, 2017, Service Bullettin – Stop/Start System (RPO KL9) Inhibited with Malfunction Indicator Light (MIL) ON – DTC P16DC,
P15FF, U01B0, U0284, U0285, U1345, U135A, U135E, U1501, U1510, U1511 Set. - GM, 2019, Service Bullettin – Stop/Start System Inhibited with Malfunction Indicator Light (MIL) ON – DTC P16DC, P15FF, P305D, P305E, U01B0, U0284, U0285, U1345, U135A, U135E, U1501, U1510,
U1511 Set. - GM, 2019, Service Bullettin – PIT5698 LIN Bus Diagnostic Information.
- GM, 2019, Service Bullettin – Active Shutters Inoperative, Malfunction Indicator Lamp (MIL) Illuminated – DTCs P059F, U1501, U1510, U1511 Set.
- GM, 2020 Service Bullettin – PIT5698A LIN Bus Diagnostic Information.
