Truck is at the dealer for code P0299, what are they going to fix, and will they automatically give it the latest flash update?

 

Don't know what your truck is, you don't say, but P0299 is turbo over/under boost. They will rebuild if feasible or replace with a rebuilt unit.

 

Truck is 2006 4x4, will they do the latest flash when finished ?

 

p0299 is a code that can come from anything from ebp sensors, icp issues, ficm concerns, fuel pressure etc. so no way to know what the dealer is going to do for you.

 

Ask them...they can answer that question far better than anyone here.

 

Am I misinformed? That is what the codes said and that is what they did. Not arguing you obviously have more knowledge than me. Just passing on my experiences.

 

sometimes it will fix it sometimes it wont. theres 2 codes I hate the most p1335 and p0299.

 

My truck was running great. Tested a new code reader and P0299 came up. Took to dealer and got a new turbo. If I wasn't testing a code reader would have never known there was a problem if there was. They said was too corroded to rebuild.

 

Ford (in the earlier days) replaced a bunch of turbo's when it was actually the EBP sensor. They subsequently issued a number of broadcast Messages on that code.

If you are under warranty, take it in for sure - the Turbo is covered under the 5 yr / 100k warranty. If you aren't, I would pull the EBP sensor and clean the EBP tube first. Also look for a chaffed wire on the connector. The EBP problem will show up at steady speeds IIRC while a turbo will exhibit worse performance when accelerating or decelerating (at least from my experience). As always, if a Tech has more info or disagrees w/ me, I absolutely do not mind being corrected!

BTW -
Normal EBP signal reading should reflect atmospheric pressure with the key on/ engine off. Typically, this is 14.7 PSI/0.88-0.9 volts at sea level, decreasing one PSI/0.10 volt for every 2000 feet of elevation. It should be within 0.5 PSI of BARO and MAP sensor pressure signals.

If the turbocharger is suspected to be the cause of low boost, it should be tested by manually activating the variable geometry turbo control valve. The engine should be at operating temperature. Using the WDS active commands in datalogger, monitor , VGT%, RPM and MGP. Set the RPM to 1200 and the VGT% to 0 and record the EBP and MGP readings. Increase VGT to 85% and watch for an increase in EBP and MGP, and listen for a whistle from the turbo. If there is no pressure increase or whistle, check the control wiring for the VGT by installing a test light in the VGT harness and commanding the VGT from 0-85%--the light should be off and then slowly brighten. If the wiring checks out, replace the VGT control valve (P/N 3C3Z-6F089-AA) and retest. If the condition is unchanged, then replace the turbocharger. Broadcast Message 0887.

 

In my case, the P0299 code was associated with the P0405 code.

Every time it happened, I suspected carbon / EGR issues.

Every time I cleared it, went back to normal...

 

Did you clear it with the $50 code reader or the Italian tuneup?

 

to be clear here.
dtc p0405 Exhaust Gas Recirculation Sensor "A" Circuit Low.
this is a circuit fault. cleaning the valve most lilky did not do squat. move the valve around, pulging or unpluging it may have resolved your issues.
this code can also cause p0299 because as the vgt ramps up and the egr tries to ramp down the ebp still is not able to find a number it likes do to the fact of the open/short circuit which is what is setting your p0299 in this case.

 

sorry but thats funny

 

The only explanation I may have for this is that it is an intermittent fault in the circuit.

Most probably it is inside the EGR itself and hopefully not in the wiring.

I do have a spare EGR valve (cleaned and ready to go) that I will throw in next and see if that resolves the problem.


Thanks cheezit... let me see what happens next.


Oh yes, I am using the $50 code reader.

 

ya I suspect a valve issue, Ive only seen 2 bad connectors.