Error Code P0340 - nervous

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Jan 6, 2024 | 01:02 AM

John in OkieLand

Thread Starter

Lead Driver

Joined: Aug 2022

Posts: 5,088

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From: Oologah, OK

Error Code P0340 - nervous

Okay,
ran out of diesel in Burlington, CO and towed to a Cenex....
filled it up with 43.33 gallons, has a SUMP.
cycled key 10 times,

it started w/o a whimper.

somewhere between Denver and Vail, CO a Check Engine light showed up.
CTS-3 shows P0340 and

per this thread,
https://www.ford-trucks.com/forums/1...-timeline.html
I will have spare parts on Tuesday Jan 9.

the truck ran good to Price, Utah and still runs fine.
but, I am a nervous nelly that it will just quit, leaving me on the road.

the Wx is 16* at night, and 34 for a high come daylight...
at 81, I don't crawl on the ground so well anymore.

should I call the local big truck diesel shop and have them fix it?
they know the truck, they worked on it August of last year installing bad parts plus a new ByPass oil filter. ( which a lab report says the oil is cleaner than new, at 4,996 miles usage. )

I am helping my sister move from Price to my home in Oklahoma,
don't want the truck "out of service" longer than necessary.

I just don't feel good, towing a Kia Amonte behind me 1200 miles with P0340 showing.
plus the air cooler leak?

Jan 6, 2024 | 05:19 AM

MoBill122

Papa Smurf

Joined: Nov 2009

Posts: 1,080

Likes: 204

From: Woodstock, GA

My first question has to be, did you clear the codes after you ran out of fuel ? And they came back ?

The PO 1247 may be as simple as pulling your pipes apart, cleaning oil off the boots with alcohol ( you can buy at any hardware store or paint store )

Not one of the experts here... just my thoughts on this

Jan 6, 2024 | 06:58 AM

udsuth78

Lead Driver

Joined: Oct 2005

Posts: 6,129

Likes: 1,919

From: Ponca City, OK

Check the 42 pin to make sure it's not rubbing the valve cover and just a wiring issue. Also check the tube from the MAP to the Y pipe for excess oil.

Jan 6, 2024 | 10:11 PM

aawlberninf350

It's a Van Gogh

Joined: Feb 2010

Posts: 7,813

Likes: 1,335

From: Elk Grove, CA

P0340 is a CPS code, either sensor or wiring. I think you would have felt a blip or 5 if that was going out.

P1247 turbo boost low.

Any chance you drove thru rain? Just considering random codes due to water intrusion.