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M8 ECU Codes, 5, 16, 18

G

Gobig510

Well-known member
Took my 2008 M8 Boondockers Race Gas out today and it ran like a complete piece of ****. Major bog top and bottom, started flashing code 16 and my reverse beeper wouldn't shut up. I thought code 16 was power valves, so I thought that might be why it was running ****ty. Anyways kept riding it because it looked like my power valves were opening, started running worse and worse and started flashing code 5 and 18. It would flash all three codes in a row. My fuel pressure was also funky, I usually have it set at 42 and she is usually a screamer. Today it was wavering back and forth really fast from like 34-40.

My hypothesis is maybe my power valves started acting up and threw the code 16. The code 16 made my damn reverse beeper go off (does that damn beeping go off everytime you throw a code?) I haven't thrown many codes... Anyway the beeper drew some electrical power from the system, starving my secondary fuel pump? Somehow all of this made me throw code 5 and 18? Possible?

If anyone has any ideas or info on what codes are what that would be awesome, I am about ready to go back to a stocker. When turbos are running they are a blast, but mine has been nothing but trouble this year.
 
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