4364 Fmi 18/ Poor Def

[lesvraissavent]

(10-29-2022 )tree98 Wrote:  It shouldn't be asking for a regen unless something is already wrong. If the system is in good working order it will be passively regen'ing and you wouldn't even know it unless you happen to see the hi exhaust temp light on.

That’s the problem that it doesn’t passively regen, I get the code 3464 fmi 16 while rolling which is intake manifold too high (overboost detected while regeneration) so I’m guessing the passive regen fails and then makes me pull over and do a parked regen.

Any idea what can cause intake manifold pressure too high?