code P0299 turbo under boost
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Junior User
Joined: Mar 2005
Posts: 81
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From: Pleasaton, CA
code P0299 turbo under boost
2005 PSD Automatic 37k on truck. Never any problems.
Engine light came on when wife was driving in mountains, pulling a grade. No trailer or anything, just a lear cap for load. Probably around elevation of 4k feet.
3 Cold starts did not clear it.
Bought a INNOVA 3130 and in came up as code P0299 Turbo/Super Charger Under boost. Cleared it.
Any ideas what this means, besides the obvious. No mods whatsoever to this truck. Think I should take it in? Keep an eye on it?
Thanks
Engine light came on when wife was driving in mountains, pulling a grade. No trailer or anything, just a lear cap for load. Probably around elevation of 4k feet.
3 Cold starts did not clear it.
Bought a INNOVA 3130 and in came up as code P0299 Turbo/Super Charger Under boost. Cleared it.
Any ideas what this means, besides the obvious. No mods whatsoever to this truck. Think I should take it in? Keep an eye on it?
Thanks
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Junior User
Joined: Mar 2005
Posts: 81
Likes: 0
From: Pleasaton, CA
After some research it seems that when others have gotten this they get a new turbo, or told to keep an eye on it, hmmmmmm
OK a little additional information. The car has probably been drive all of 3k for the last 6 months. GUess it could be a sticky vane. I guess if it comes up again into the shop.
BTW truck runs fine.
OK a little additional information. The car has probably been drive all of 3k for the last 6 months. GUess it could be a sticky vane. I guess if it comes up again into the shop.
BTW truck runs fine.
Posting Guru
Joined: Dec 2006
Posts: 1,391
Likes: 1
From: NorCal
My truck came up with the same code once on a long grade when the truck was about 6 months old, It didn't cause any problem and I never had that code happen again so I wouln't get too worried unless it keeps happening.
Logistics Pro
Joined: Dec 2004
Posts: 3,541
Likes: 5
From: Weatherford Texas.
Mine just came up with the code a couple of weeks ago, at 16k, drove it like H*** wot from every light and up the on ramps to the freeway, seems to have helped code has not come back and my turbo farts a less.
Senior User
Joined: Sep 2007
Posts: 107
Likes: 0
There is no code for overboost and I believe that the underboost code comes up with a overboost condition. It might be a good time to install a boost guage. Since you were climbing a grade,I would guess that it was a overboost condition. My turbo was overboosting to 40psi and set the same code. Turbo replaced. Vanes stuck.
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