Community Forums

camping fam · 06-19-2018, 07:13 PM

I got a check engine light and have the following codes

SPN 2795 CM
Out of Calibration
FMI 13

Var Geo Turbo1
SPN 641 CM
Mech System Not Resp Properly
FMI 7

2006 Cummins ISB / Freight liner Chassis
55,000 miles

No issues other than CEL and Codes I drove it home last weekend about an hour and half no issues with power and my wife was following and did not see any smoke.

I called Freightliner and they seemed to think it was wiring so I checked all the plugs at the turbo and wires everything looked okay but I figured I would ask on here to see if anyone new of these codes.

Thanks in advance!

mackwrench · 06-19-2018, 08:36 PM

With no performance issues, sometimes a low voltage, poor ground can do funky things.

Can you clear codes? Check all battery connection's, ground to chassis/engine block....but that's only a WAG...

camping fam · 06-22-2018, 06:43 AM

I tried clearing the codes out of the freightliner screen but no success they go away and then come back. I need to do some investigating and check some wires and stuff. Any ideas where to look?