Fix code P0452 P0841
P0452 or P0841 trouble codes on Journey, Chrysler Sebring, Avenger, Town & Country, Dodge Caravan, Grand Caravan
Chrysler has issued a technical service bulletin (TSB) 18-034-08 REV D to address trouble codes P0452 Evap Pressure Switch Stuck Closed and P0841 Pressure Switch Rationality. If you own one of the vehicles listed below and have either of these trouble codes, first perform the diagnostic checks shown in the shop manual. If the components check out ok, take the vehicle to the dealer for a PCM reflash with updated software. The new software will correct the problem of the bogus codes. The shop time for the reflash is .4 hours.
2009 Journey with 2.4L built before Aug 20, 2008 or 3.5L built before Sep 6, 2008
2007-09 Sebring, Avenger 3.5L built before Oct 15, 2008
2008 Town & Country, Voyager, Caravan with 3.3L, 3.8L, or 4.0L
© 2012 Rick Muscoplat