Cadillac U2151: Navigation ECU Communication Malfunction
Is your scanner showing Cadillac U2151?
No worries. We'll show you what it means and how to deal with it.
Cadillac U2151: Navigation ECU Communication Malfunction
OVERVIEWWhat Does The Cadillac U2151 Code Mean?
The navigation display head (NDH) must detect a power mode transition from the OFF-ASLEEP state to one of the following: ACC ON
How Can You Fix The Cadillac U2151 Code?
Test for intermittent shorts and opens on the navigation display serial data high circuit and the navigation display serial data low circuit. Test for intermittent shorts and opens on the navigation module (NAV) supply and ground circuits.
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
>>> Dorman 86689C 399 PC Automotive Electrical Repair Kit
Note: During the purchasing process, please check carefully whether the part you want to buy fits your car!
Reference Sources
Cadillac U2151, DTCDECODE.
