NEED HELP with a 2005 118" T1N

Ajmorre

New member
I am looking at buying a 2005 118" W.B. and the seller noted that there is a P0702 transmission code showing as well as an "injector issue" causing the van to max out at 45MPH. how serious are these issues, is it something that could be potentially fixed up easily, and about how much would it cost?

I'm really interested in it but want to make sure its not a waste of time
 

Nautamaran

2004 140” HRC 2500 (Crewed)
Have a knowledgeable technician have a look at the van for you.

P0702 is an SAE OBDII code read from the engine module, not a native Mercedes code read from the transmission module. All it tells you is *something* is wrong in the transmission control module, but not what. The 45mph speed cap indicates the same thing - the transmission is in limp-home mode and self-limiting to 2nd/Rev gears.

A Sprinter-specific scan tool can pull the native Mercedes fault codes directly from the transmission module, giving you a better picture of the extent of the problem. Without that information you’re running blind and can end up throwing expensive parts at the van.

That said, if the engine is running and idling smoothly, this may be limited to the transmission. Common issues are dirty magnetic sensors on the conductor plate, and fluid leaks causing electrical shorts at the module. Both are relatively easy to address with a new conductor plate, connector plug, and fluid change. This is a moderate DIY level project since you need to drop the pan and valve body, but is within reach if you have a clean working space for about US$250 in parts and supplies. A shop should be able to get it done in about two hours? There are specific fault codes that will point you in this direction.

Good luck with your evaluation of the van,

-dave
 

Ajmorre

New member
Have a knowledgeable technician have a look at the van for you.

P0702 is an SAE OBDII code read from the engine module, not a native Mercedes code read from the transmission module. All it tells you is *something* is wrong in the transmission control module, but not what. The 45mph speed cap indicates the same thing - the transmission is in limp-home mode and self-limiting to 2nd/Rev gears.

A Sprinter-specific scan tool can pull the native Mercedes fault codes directly from the transmission module, giving you a better picture of the extent of the problem. Without that information you’re running blind and can end up throwing expensive parts at the van.

That said, if the engine is running and idling smoothly, this may be limited to the transmission. Common issues are dirty magnetic sensors on the conductor plate, and fluid leaks causing electrical shorts at the module. Both are relatively easy to address with a new conductor plate, connector plug, and fluid change. This is a moderate DIY level project since you need to drop the pan and valve body, but is within reach if you have a clean working space for about US$250 in parts and supplies. A shop should be able to get it done in about two hours? There are specific fault codes that will point you in this direction.

Good luck with your evaluation of the van,

-dave
Dave Thank you a ton! I was lost on all the mechanical lingo but I will have it checked out by a professional!
 

Nautamaran

2004 140” HRC 2500 (Crewed)
Dave Thank you a ton! I was lost on all the mechanical lingo but I will have it checked out by a professional!
A word of caution as you dive in:

These vans aren’t getting any younger, and the high-mileage ones will need a higher degree of care, and likely catch-up maintenance. While the parts aren’t (generally) particularly expensive, their identification and installation can eat up a lot of time, which can get costly at shop rates.
This is not meant to disparage the many who earn a good living maintaining vehicles, but to prepare you for the expenses that can surface if you are not able to tackle the various maintenance and repair tasks yourself. There are many here willing to guide you to DIY, and many good shops out there that you can hire to do it for you.

Welcome to the club,

-dave
 

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