Ford 7.3L Power Stroke (1999-2003) :: 1271 Injector Code - High Side To Low Side Open Cylinder 1
Aug 30, 2009
I've got a 1271 code and I can't seem to make it go away. Code definition is "High side to Low side open Cyl 1". The truck runs fine, no rough idle, no excessive smoke of any color, just the damn CEL light stays on. I check the UVCH and all the injectors ohm in at 2.7 ohms. I've already done the updated clips under the covers. I run all the buzz tests and KOEO/ KOER tests and all appears OK. My AE won't do a Cyl contribution test. All the injector data shows all 0.00. I know its not that perfect. "high to low open", does that mean I've lost a ground? If so where?
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Getting DTC Code P1271 - #1 Injector High -> Low Side Open.
The code tends to show up more during cold weather start up. Using AE-AutoEngenuity KOEO - Buzz Test returns the P1271 error
Troubleshooting performed:
- 42-Pin Connector @ Driver Side Valve Cover
- 9-pin VCH on Passenger side
- IDM Module under driver side wheel well
- All of these are testing within the 2.8 - 3.2 Ohm range
- (Used the GB Reman. Tech Bulletin 103) - TB 103: 1994-03 Ford 7.3L IDM Replacement & Diagnostics)
I was going to replace the solenoid, however, with the above readings I'm not convinced it's the solenoid. Before I tear into the valve covers I was looking for some add'l thoughts from the forum. Could it be the IDM ?....
Any add'l checks to perform using AE, or the IDM, other than replacing IDM.
01 Platinum 7.3 - BTS - PHP Hydra Tunes - 4" FloPro - Riff RaffWheel - Redhead Steering - Driven Diesel Hutch/Harpoon - Kenwood DVD w/ back up- 35"s - GloPro EGT/Pyro/Boost/Trans, Scan Gauge II, AE bundle
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Today I just installed a brand new IDM and after running the Injector Buzz Test test, I received codes: P1298 Injector Drive Module Failure, P1293 Injector High Side Open - Bank 1, and P1294 Injector High Side Open - Bank 2. How a new IDM could throw these codes?
When running the KOEO test I received codes P0605 Injector Control Module Read Only Memory (ROM) Error, P1298, P1293, & P1294.
My engine is still missing but the engine is running a heck of a lot better after replacing the IDM and injector 8 has a rotational velocity of about 3%
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So I got an IDM code and then after running AE buzz test got a P1273 (#3 cylinder high low open).
Ohm'd out the 42 Pin - got 3 across the board. Only test 42 pin from valve cover to injectors.
Double checked UVHC
Swapped solenionds
Swapped injectors
Did ford wiggle test.
Ran Injector buzz between all those steps and still get P1273.
What's the next step? Ohm from IDM to 42pin? May actually be a bad IDM?
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So the other day I was driving my truck and all of the sudden it through a p1316 code. So I did a Buzz test with FORscan and it gave me this error P12777. For the people that have dealt with this code before, where should I start looking, As I have a lot of stuff to take out on the passenger side before I can even see the valve cover. Is it more of a wiring issues or is it a injector issue.
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Have a 2004 F350 which had problems starting cold and once started had bad throttle response until warm. It also had a shudder at cruising speed when going up a slight incline, would shudder until turbo kicked in.
Pulled codes which related to FICM and codes for all 8 injectors. 7 injector codes were circuit low, cylinder 1 high. Tested FICM voltage and sent FICM out for repair.
Installed rebuilt FICM, cleared codes, and hard start went away, but cruising shudder is still present.
Only existing code is P0262 for cylinder 1 injector circuit high. I'm assuming that cylinder 1 injector is bad -- are there any tests to confirm before I take it apart to replace it?
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I have for a week suspected my batteries were getting weak. just slower cranking is all. I took my truck in to have a viper security system installed and while he was doing his work he killed the batteries. I saw him hook up a battery charger and started the truck. He pulled it around to me and explained how the system worked and off i went. 5 miles down the road, on the thruway, I notice a miss and I'm down on power. FICM looked ok, 48V and it was charging, 13.8 I thought I would bring it to my shop and load test the batteries. On my way here, the check engine light comes on. At the shop, load tested them and they were weak. Installed 2 brand new batteries, started it up, no difference. Hooked up the scanner and pulled a code P2077 (cylinder 6 injector circuit high) Now what? I'm not sure where to go from here. I'm guessing either the FICM went bad or the #6 injector?
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I have always been afraid this day would come - that the engine would outlast the door and window systems.
I have never previously in life wanted a vehicle with electric assisted windows and doors for this reason - remember when those were expensive foo-foo options on a vehicle?
Anyway the back passenger door window has not worked for a couple years now. Not too big a deal.
A month ago the back passenger door could no longer be opened from either side. Not too good and I couldn't see much of a way to ever fix it.
This morning the back driver side door won't open from either side. The lock only half-heartedly wants to unlock via the powered system though it can be fully pulled up manually (not as possible on the passenger side rear).
Next up will be the front doors...
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My driver side back suicide door won't open. It is the top latch that is not disengaging. I think I heard something loose in that door over the past month. Am I going to have to take off the inside panel to fix it?
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I can't figure out the problem with my extended cab door. Driver's side doesn't open with either door handle.
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Story starts when I was cruising down the freeway and the truck cut out, seemed like a CPS or Injector related issue - seemed like a whole cylinder bank cut out. Stopped truck on shoulder, she shuttered and died. Turned truck off and restarted, ran like a top for about 4 miles then did the same again. I restarted it again and drive it straight home, ran like it I usually did.
As soon as I arrived home I did a little research and learned to start with CPS. I replaced my grey CPS with a new, Ford grey CPS. Truck fired up, ran the same that it did before - not the best idle but at 302k I was content. Drove it for a few days and it did it again, hobbled the truck home, although it did do it a few times and the last time it did it was really hard to start.
I replaced the IDM through NAPA. She's a work truck so I wasn't going to splurge for a Swamp Unit, the NAPA one came with an 18-Month Warrenty. She started right up afterward, the smoothest idle I had ever felt and she ran great, except for an SES. I ran the code and it was an IDM code, ran a buzz test and it pulled injector #5 high/low error, but it buzzed (a bit quieter than the others).
Here's the weirdest part, when the motor is cold the SES is constant, but as it warms up it only shows under power and sometimes flashes off at certain RPMs (1700-1900 and 2100-2300) and turns off when engine braking (TC locked) returns at idle. NO engine lights with the old IDM. I've checked the wiring to the injector from the 42-pin to the outer connector. (.6-.7 ohms, what my meter reads without any loads) Injector (from outer connector) reads 3.2 ohms. UVCH is less then 2 months old (GP issues) injectors have less than 5k on them.
Why? New injector solenoid? Bad IDM? Is it possible my last one never fired #5 and it got stuck? Or did my old IDM fry #5? Also I'm going to keep driving it and maybe it'll clear up, there was one drive I took where it cleared up completely. I've done some extensive research on this an i'm stumped. With the new IDM the truck has run better then it ever has.
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I just replaced my injector cups a month or so ago and also injectors with some lower mile injectors. but now 3 weeks later still not getting any pressure at icp. I have dead headed pump got 3k plus but when i block off ether head i get no pressure. i have pulled injectors and checked for orings and they are fine...
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I have a 2000 Ford F550 7.3. I bought a Superchips programmer to read the codes on my truck and up pops this P1316, so I did some research and found out that the most common problem is the injector wiring harness. I bought new valve cover gaskets and the injector wiring as well because the truck is old and I figured new wires wouldn't hurt.
So after installing the new wiring harness and gaskets I'm still getting this Code! The truck idles rough and serge's sometimes, also there is a lack of power and some shaking between 40 and 50 miles per hour, however form 50 to 60 MPH seem's to be just fine. I don't trust the "Mechanic Shops" around here and will only take the truck in as a last resort.
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I am having a difficult time trying to track down the root cause of a P1393 code in a 99.5 7.3. The code means all the glow plugs on the driver's side are not working. I don't have any other codes related to the glow plug system present in my computer.
I've replaced:
1)The Glow Plug Relay (I have the CA version with the shunt)
2)Valve cover gaskets and wire harnesses
3)Glow plugs
I've used all OEM product replacements.
Additional testing:
1)Voltage on the glow plug relay posts going to the left and right bank is the same (I think this means the shunt is okay)
2)Disconnecting the wire harness to the valve covers yields 12 volts at all 8 glow plug connections during the glow plug cycle
3)In one of the steps of a troubleshooting document I found, it requires a KOEO On-Demand Self Test. It does not complete and ends with a P0605 code, "Internal CTRL Module ROM Error" using a Snap On Scan tool.
4)Using the Snap On scan tool to run a glow plug test results in "Test has aborted 64 - Abnormal Exit without result".
5)I checked part of the wiring loom and it seemed to be good.
Is there a way to test the wire that goes from the Glow Plug Relay on the driver-side bank to the PCM? I think that either this wire is bad, or a bad PCM.
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After installing new glow plugs, glow plug relay, and valve cover gaskets my 2000 7.3 is throwing the 1395 code. Glow plug monitor Bank 1. Any input as to cause? Checked all connections to relay. All tight. Read something about fusible link. Where that is located? One side of relay reads 0 volts.
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Early 99' model I picked up. Blew the oil cooler and had lot of pressure in the Degas bottle, so did head job and oil cooler and now I'm Still getting a P0264. Unplug #8 injector truck almost dies, plug it up and she smooths out...
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Can I swap my seat bottoms? I have '99 F350 with 40-20-40 seats. Drivers seat is getting tired. Would like to take just the seat bottom and flip-flop. Can it be done?
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Can I swap my seat bottoms? I have '99F350 with 40-20-40 seats. Drivers seat is getting tired. Would like to take just the seat bottom and flip-flop. Can it be done?
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New to diesel trucks and wondered if this recurring code is a serious problem. I clear DTC and truck will run fine. Might stay off for 2 days or 2 months and same code comes back. Truck seems to run just fine even with service light on.
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I had a p1211 code when I first got Torque Pro hooked up. I figured it was just because I'd done a couple WOT runs and the HPOP just can't quite keep up with the injectors. I was told this might happen when I ordered the injectors from Gear head. I also noticed that my ICP peaked at around 3600 during one of these runs. I don't have it logged, but I'm certain it was up that high.
The code hasn't returned, but I haven't been running it too hard either. I don't quite know what to make of the ICPs actually being that high. From looking at a bunch of Rich's graphs his doesn't really get past 2800 or 2900. Is this an incorrect reading? Do I need to worry about anything?
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If the fuel relief valve is stuck open would it possibly throw a P1316 code?
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