Strange code

[btfarm]

Had the code P003A come up today. Freeze data showed 3 MPH and 0%throttle position.

 

[btfarm]

Tried to post the pic of the code reader but that was a waste of time. The Actron reader didn't recognize it.

 

[THEFERMANATOR]

P003a is turbo vein position sensor not learned.

http://www.duramaxdiesels.com/forum/showthread.php?t=33214
http://www.duramaxdiesels.com/forum/showthread.php?t=33215

 

[btfarm]

Sounds like an expensive VPS may be in my future.

 

[Mad Maxx]

Sounds like an expensive VPS may be in my future.

Aren't the Vane Position Sensors the same across all Versions of Duramax, that use a VGT Turbo? IIRC, they are, and there are big price differences in them too, but they're all essentially the same, but with a different P/N.

 

[btfarm]

I'm not going to worry about it until I have to. When it threw the code I had been hammering it some just before. I was towing some today and no codes

 

[RI Chevy Silveradoman]

Did it clear on its own Mike?

 

[btfarm]

I cleared it after reading the freeze data on it and it has not returned under any other conditions. Fingers crossed. IIRC James paid a significant amount for a VPS a few years ago...

 

[TractorTruck]

sometimes the VGT side of the turbo gets gummed up with soot and the vanes get sticky. Depending on your skills you can pull the turbo off and clean it up. A small wire brush and put it all back together. No lubricant is used on the parts. If you lube parts the soot will stick to it and your back at square one. I hope this helps.

 

[btfarm]

I had just done a pretty serious ummmmmm 'clean out ".... Yea that's it, clean out. I'm suspecting I might have gummed the vanes briefly.

 

[TractorTruck]

My next Dmax I'll post pics on the process. The 6.0 Power stroke had the same problem. I'd help a guy out when everyone else wanted to sell him a turbo and what not.

 

[btfarm]

Code P003A came up again on Saturday. I had just started the truck and with the windows open I noticed the vanes cycling sound was a bit louder than normal. Whatever that means... The freeze data said it was caused by P004A. Huh?

 

[RI Chevy Silveradoman]

Weird!

 

[btfarm]

Getting the P003 code again from time to time but now I have gotten P02563 a couple of times. I believe that points directly to the VPS. Guess I'll need to do some research and shopping for that.

 

[RI Chevy Silveradoman]

Yikes. How many miles on your truck now Mike?

 

[RI Chevy Silveradoman]

I am getting the same codes today. Truck still runs OK. But I got a P003A and P2563 Intermittent.
Is this Turbo Vane Position Sensor expensive? Has anyone tried to put a different turbo charger on these that is a fixed wheel?

 

[btfarm]

Typically it's the vanes are sticky. You can pull the sensor and clean it with dome MAD sensor cleaner to make sure it's clean. Not sure how to test the VP solenoid without a Tech II

 

[btfarm]

I know Ferman suggested I switch to Synthetic oil to maybe help loosen up the vanes and I did that. Then after a good 500 mile round trip I didn't have codes for a couple of weeks but now I'm almost always short trips and the P003A is there frequently but since the Truck runs great, I just ignore it.

 

[ak diesel driver]

Might talk to Chris he was telling me he had a coating that would keep soot from sticking. At least if IIRC

 

[RI Chevy Silveradoman]

Exact same situation for me Mike. I had been run ning Mobil 1 synthetic for a few years, then I had some Mobil Delvac dino oil to use up. I was getting codes regularly and blasting out the soot about twice daily. I guessed that the Dino was coming a bit. I downgraded my tune to 60hp tow tune and switched back to Mobil 1 synthetic. Was good for a while, but just got these codes again. Truck really doesn't seem down on power. I'll just keep driving it I guess.
My fault for driving like an old man for past several years. I'm not really a hig fan of these VVTs. I'd like a nice fixed wheel turbo replacement that bolts right in.