Trouble codes
Network codes on the record
147 codes beginning with U that enough federal documents name for us to say which vehicles set them. Network — the modules talking to each other over the vehicle bus.
Every network code with a page
Source: NHTSAThe number beside each code is how many separate federal documents name it.
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
About network codes
Source: NHTSA files and the OBD-II standardWhat does the U in a code like U0001 mean?
It names the system the fault was logged in: Network — the modules talking to each other over the vehicle bus. Every code on this page begins with U for that reason.
Why is a code here and not on another site's list?
Because this is not a dictionary. A code appears here when enough separate federal documents name it — manufacturer service bulletins and owner complaints — that we can say which vehicles it is a known pattern on. Codes nobody has filed anything about are not listed.