Vonetruck07 Posted December 18, 2022 Share Posted December 18, 2022 I just had a diagnostic done on my 2007 Mack Cv713 and got Solenoid Boost Voltage- Voltage Low (Flash Code 8-9 also Electronic Unit Pump #5-Data Erratic Or Abnormal (Flash Code 8-5 what should I check for Quote Link to comment Share on other sites More sharing options...
0 Joey Mack Posted December 18, 2022 Share Posted December 18, 2022 Hello, welcome aboard.. ( 8-? codes are the eup's) 8-1--- 8-6.. 8-5 is the #5 EUP..8-9 is a code related to all of the EUP's. check the wires that run behind them for cracks and exposed wires. DO NOT BUY A EUP AT THIS TIME !!!............. You can also check the J1 plug on the EECU for corrosion. Quote Link to comment Share on other sites More sharing options...
0 Joey Mack Posted December 18, 2022 Share Posted December 18, 2022 (edited) Here is a useful page from my Svc. manual... notice the EUP numbers and the PIN numbers in the EECU plug.. There is a lot of info in this one picture.. Edited December 18, 2022 by Joey Mack poor sperring.. Quote Link to comment Share on other sites More sharing options...
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Vonetruck07
I just had a diagnostic done on my 2007 Mack Cv713 and got
Solenoid Boost Voltage- Voltage Low (Flash Code 8-9 also
Electronic Unit Pump #5-Data Erratic Or Abnormal (Flash Code 8-5 what should I check for
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