0603 and 1211 codes
Thread Starter
|
Senior User
Joined: Mar 2006
Posts: 435
Likes: 0
0603 and 1211 codes
I pulled my superchip microtuner out and went for a drive pulling a 9000lb trailer, on one pretty hard pull I through a cel, when I checked it 1211 and 0603 popped up. Its the first time in 30000 miles the chip was out. Any Ideas thanks
Post Fiend
Joined: Jun 2004
Posts: 9,293
Likes: 10
From: Parker, CO
Normal for your tuner to set both codes.
The P0603 will always be set by the tuner. It pops up every time it flashes a tune.
The P1211 is the result of using a higher horsepower tune than stock. It's triggered when oil pressure from the high pressure oil pump (HPOP) drops below a desired level. When running a higher HP tune, you need more fuel. In order to push more fuel, you need more oil volume. The stock HPOP can only pump so much oil per revolution, and just about every chip and tuner out there needs more oil than the HPOP can supply.
It doesn't hurt anything, it's just expected with the 7.3L.
The P0603 will always be set by the tuner. It pops up every time it flashes a tune.
The P1211 is the result of using a higher horsepower tune than stock. It's triggered when oil pressure from the high pressure oil pump (HPOP) drops below a desired level. When running a higher HP tune, you need more fuel. In order to push more fuel, you need more oil volume. The stock HPOP can only pump so much oil per revolution, and just about every chip and tuner out there needs more oil than the HPOP can supply.
It doesn't hurt anything, it's just expected with the 7.3L.
Post Fiend
Joined: Jun 2004
Posts: 9,293
Likes: 10
From: Parker, CO
The P0603 was still caused by the tuner.
If you were in a bone stock setting, and tripped the P1211 while towing hard, then you might have a weak HPOP. It happens. The best way to know for sure is to do a live scan while driving, and monitor the ICP pressure and duty cycle to see what's happening.
If you were in a bone stock setting, and tripped the P1211 while towing hard, then you might have a weak HPOP. It happens. The best way to know for sure is to do a live scan while driving, and monitor the ICP pressure and duty cycle to see what's happening.
Post Fiend
Joined: Feb 2007
Posts: 14,541
Likes: 2
From: Dallas-Ft. Worth
Did you set those codes without tunes (CEL was on) or did you just read the stored codes out of it?? I'm thinking you set the codes with the tuner and when you went back to stock, you just read the old stored codes from the PCM.
Thread Starter
|
Senior User
Joined: Mar 2006
Posts: 435
Likes: 0
I set the cel with no tunes on a hard pull, I instantly pulled over and thats when the code was pulled
Trending Topics
Post Fiend
Joined: Nov 2007
Posts: 9,549
Likes: 14
From: Payson, AZ
Clear the codes and do another hard pull and re-check for the P1211.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
Top 6 Best Deals Available on New Fords & Lincolns Right Now
Brett Foote
This Hennessey Takes the Expedition Tremor's Off-Roading Capability to the Next Level
Verdad Gallardo
Top 10 Fords at 2026 Carlisle Ford Nationals
Joe Kucinski
3 Best / 3 Worst Parts of Modern Ford Ownership
Brett Foote
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches
Pouria Savadkouei
Every 2026 Ford Engine Explained
Brett Foote
10 Ugly Ford Trucks That We Still Kinda Love
Joe Kucinski
10 Things Every Truck Owner NEEDS (2026 Edition)
Michael S. Palmer
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Fleet Owner
Joined: Jun 2004
Posts: 25,090
Likes: 1,112
From: Rio Rico, AZ.
Traveling from Munds Park, AZ to Panguich, UT.
Some LOOONNNGGG 6% grades to negotiate.
I'll clear all codes and post back the results after I arrive.
I won't be doing any live data for the trip, too much going on in the cab with the kids along for the ride this time.
Post Fiend
Joined: Feb 2007
Posts: 14,541
Likes: 2
From: Dallas-Ft. Worth
If you set the CEL with stock tunes, and got only those codes, something *is* up like Curtis is saying. I don't think stock tunes call for enough oil to cause that code if the HPOP is healthy.
Post Fiend
Joined: Nov 2007
Posts: 9,549
Likes: 14
From: Payson, AZ
I have a hard pull to make this Friday.
Traveling from Munds Park, AZ to Panguich, UT.
Some LOOONNNGGG 6% grades to negotiate.
I'll clear all codes and post back the results after I arrive.
I won't be doing any live data for the trip, too much going on in the cab with the kids along for the ride this time.
Traveling from Munds Park, AZ to Panguich, UT.
Some LOOONNNGGG 6% grades to negotiate.
I'll clear all codes and post back the results after I arrive.
I won't be doing any live data for the trip, too much going on in the cab with the kids along for the ride this time.
You are in my neck of the woods. Did you come to AZ to get out of the heat in the Northwest.
The weather in Flag has been nice, 80ish. Here in Payson it has been between 98 and 102 the last few days.Panguich has some great fly fishing.
Senior User
Joined: Aug 2008
Posts: 122
Likes: 0
From: west tennessee
ok i put my truck on stock tune yesterday and with my superchip it clears all DTC's when it goes to stock and it thru 0603 and 1211. my truck takes quite a while to crank and quite often here latley it loses power and starts loaping and knocking real loud and sometimes cuts off. could it be the HPOP
Hook it, I'll pull it.
Joined: May 2007
Posts: 15,037
Likes: 4
From: Grand Lake, La.
ok i put my truck on stock tune yesterday and with my superchip it clears all DTC's when it goes to stock and it thru 0603 and 1211. my truck takes quite a while to crank and quite often here latley it loses power and starts loaping and knocking real loud and sometimes cuts off. could it be the HPOP