Question about 2006 Chrysler Pacifica

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P0455 vac leak

How do i fix this and where do i start

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I believe your code is a either an evap gross leak or small leak. Most Chrysler products had problems with the fuel vapor lines from the engine compartment to the tank leaking fumes. Usually at the ends of the lines where they are rubber rather than plastic. If you live in the northeast I have seen the filler neck tubes rust and become porous creating a small leak. Check the lines near the fuel tank first. Unfortunately these leaks are not always obvious and you will have to find a shop that has a smoke leak detector. There are other parts such as evap switches and solenoids that may not be functioning and may vent the system prematurely. Then there is the fuel cap. If the seal on it or the filler neck tube are damaged it will allow fuel vapors to escape into the atmosphere. Sorry there is no definitive answer but now you have an idea where to look.

Posted on Jan 12, 2013

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Posted on Jan 02, 2017

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P0455 and P0302


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P0455 vac leak 2006 pacifica


Not without knowing where the leak in the vent system is.
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Tengo una dodge caravan motor 3.3 - cuando el motor lleva cierto tiempo funcionando pierde fuerza. lo escanearon y da el codigo P1494.(el motor esta recien reparado)y antes de repararlo no presentaba la...


The Dodge P1494 engine light code means Leak Detection Pump Switch or Mechanical Fault.

A proper diagnosis must be done, you can't simply replace the LDP and expect that to fix the problem. It shouldn't hurt anything to keep driving it for a while until you can get it fixed.

There is a technical service bulletin that applies to your vehicle and it mentions that code specifically. I'm including it here for your information:

TSB-18-01-00
SUBJECT: Misdiagnosed Leak Detection Pump Systems With DTC P1494, P0442, P0455, OR P0456.
MODELS:
1997 - 2000 (LH) Concorde/Intrepid/LHS/300M/Vision and others!

DISCUSSION: During evaporative system diagnosis, Leak Detection Pumps have mistakenly been replaced. A thorough inspection for pinched, kinked, or disconnected supply vacuum lines (as currently listed in the Powertrain Diagnostic Procedures) is a critical step in diagnosing DTC P1494 (LDP SW OR MECHANICAL FAULT). Additionally, the other evaporative leak faults (DTC P0442 - SMALL LEAK, P0455 - LARGE LEAK, and P0456 - VERY SMALL LEAK) should have the supply vacuum lines examined for pinches or kinks prior to any LDP component replacement. The supply vacuum lines should be checked from the engine compartment all the way to the fuel tank, including the LDP and purge system.

NOTE: VERIFY ALL RELATED SUPPLY VACUUM LINE ROUTINGS FOR PINCHES, KINKS, OR DISCONNECTION'S BEFORE REPLACING LDP SYSTEM COMPONENTS.


If you need tha trasnaltion, couild check THIS LINK. Hope this helps.


Traduccion automatica:
El Dodge motor P1494 c?digo de luces de detecci?n de fugas de la bomba o el interruptor de falla mec?nica. Un diagn?stico correcto se debe hacer, no se puede simplemente sustituir el PLD y esperamos que para solucionar el problema. No debe doler nada que mantener la conducci?n por un tiempo hasta que te lo arreglen.

Hay un bolet?n de servicio t?cnico que se aplica a su veh?culo y se menciona que el c?digo en particular. Lo incluyo aqu? para su informaci?n:

TSB-18-01-00

ASUNTO:
Diagnosticado de fugas Sistemas de detecci?n de la bomba con DTC P1494, P0442, P0455, P0456 O.

MODELOS:
1997 - 2000 (LH) Concorde/Intrepid/LHS/300M/Vision y otros!

DISCUSI?N:
Durante el diagn?stico del sistema de evaporaci?n, de detecci?n de fugas bombas han sido sustituidas por error. Una inspecci?n minuciosa de las l?neas de vac?o pellizcar, torcer o desconectado de suministro (en la actualidad figuran en los Procedimientos de Tren Motriz de diagn?stico) es un paso cr?tico en el diagn?stico de DTC P1494 (PDL SW O AVER?A MEC?NICA). Adem?s, los otros fallos por evaporaci?n de fugas (DTC P0442 - peque?a fuga, P0455 - fuga grande, y P0456 - MUY PEQUE?OS DE FUGAS) deben tener las l?neas de alimentaci?n de vac?o examinados por pellizcos o vueltas antes de cualquier reemplazo de componentes del PLD. Las l?neas de alimentaci?n de vac?o se debe revisar el compartimiento del motor hasta llegar al tanque de combustible, incluyendo el PLD y el sistema de purga.

NOTA: VERIFICAR todo lo relacionado SUMINISTRO DE RUTAS l?nea de vac?o PIZCAS, torceduras, o desconexi?n ANTES DE CAMBIAR LOS COMPONENTES DEL SISTEMA PLD.

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