Re: I have a 2001 dodge durango, getting a no bu5 code
Disconnect your CPU, this will reset the your CPU. If it happens once more, do the same thing this time keep a small bag of ice on it to keep it cold untill you can get it to the shop. there is probably a microswitch at the root of this problem.
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Check the PCM connections, it may be that the computer or PCM is BAD since its not sending any data to display, be sure to check all connections to the PCM and any electrical connections that are visible by the engine compartment and under the dash.
it could be a number of things, you could have a coil pack misfire or poor signal from the cam sensor, however on 96 and newer cars the ECM should detect and throw a code(check engine or service soon light) if could be clogged fuel injectors or a fuel filter or a leaky fitting causing air to enter the sytem. if it where me i would insure there are no codes store in the ECM (some codes will stored, flash the check engine light once and go away but the code is still there) if no codes are present then you can either test a fuel pressure with a gauge at the service port, or start running fuel system cleaner through your engine and see if it starts running any better. also sometimes when the fuel pump relay starts to go out it will cause the fuel pump to stutter. but most often when they go out they simply stop working all together. sorry if this solution seems a little expansive but its the best i can do for you without actually being there myself. hope this helps
No bus refers to the communication bus between all the computers. These are the wires the computers share information on. When you cluster says no bus it means the cluster can't communicate on the bus. The whole bus network could be down or the cluster could be defective. Any module on the bus could fail and bring down the bus too
Taking out the gauge cluster and having a look at the gauge would be recommended, it might be the gauge motor either stuck or burnt, you might need solder another motor ( they are very small motors, moving gauges up and down).
Try disconnecting your cpu (three plugs next to your air cleaner). this will reset your on board computer. If it happens again, ice it (keep it dry) to keep it cool until you can get it looked at. A microswitch may be the root of this problem.