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Bad turbo?

8K views 10 replies 9 participants last post by  Benn0 
#1 ·
Hey guys, I have a 2014 Diesel Jeep with Green Diesel Engineering tune on it. Two weeks ago I was doing normal country driving and all the sudden the Service Trottle Control (or whatever) came on and it went into limp mode. Took it to the dealer and they are now telling me that it needs a new turbo. Which requires to drop the trans. The codes they pulled were P0299 and U1424. I just can't believe that the turbo can go out with only 40k miles on it.... Any thoughts? Dealer says it will probably be another week before they can pull the trans and all that.... Since they have never done one and I'm their Guinea pig!
 
#4 ·
#10 ·
I doubt the turbo is the problem based on your codes. I would say you have more of an electrical issue with the F343 circuit. The U1424 is a Transmission code and really isn't that big of a deal, more of a communication error with the TCM and PCM. I would get to the bottom of the P0299 code which is your main issue and why you are in limp mode. I think your dealer is pretty clueless. I would have them check the wire harness and make sure the circuits associated with the turbo actuator is working properly.

The service manual says you don't have to drop the tranny to change the turbo, but it has you do quite a bit of weird stuff. Remove the exhaust manifolds, remove transmission cross member and push the transmission up to get the turbo to rotate forward to get more access to the turbo. Personally, when I put in my larger turbo I will be dropping the engine/drivetrain. I have gotten tired of laying over the engine, destroying my arms trying to reach all the difficult fasteners. I have done way too many turbo swaps on the WK CRD's and stopped a bit ago removing the turbo without droping the engine/drivetrain. I even made a little stand to hold the assembly as its really not that many bolts to remove the whole assembly. Plus watching it for years at the assembly plants I think its the way to go.



 
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#11 ·
I've seen this a couple times now, we have a lot of diesels in Australia. It can be a hard one to track down, but the most recent P0299 error seemed to have been a bad or dirty MAF sensor. They changed it out and put the original back again and the issue hasn't come back.
 
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