P0381 Glow Plug Indicator Circuit Malfunction
#1
P0381 Glow Plug Indicator Circuit Malfunction
Can anyone tell me what needs to be replaced when you pull a PO381 GLOW PLUG INDICATOR CIRCUIT MALFUCTION Code?
Glow plug relay? (got a new one on-hand)
Glow plugs? (got a new set of them too)
Glow plug harness? (ain't got that one...yet)
Thanks guys. Any help is always appreciated.
Ernie.
Glow plug relay? (got a new one on-hand)
Glow plugs? (got a new set of them too)
Glow plug harness? (ain't got that one...yet)
Thanks guys. Any help is always appreciated.
Ernie.
#2
Check the voltage at the big lugs on your GPR. If you're getting 12v+ on the input side, but nothing on the output side @KOEO (Key On Engine Off) your GPR is toast. Plug her in and keep her warm, and she'll run for you. If you need to replace the GPR, do this one:
Welcome to guzzle's Stancor GPR replacement Mod Web Page
Do it once and pretty much forget about it!!
Welcome to guzzle's Stancor GPR replacement Mod Web Page
Do it once and pretty much forget about it!!
#4
#5
#7
SES not from a bad GPR...I think
If you ever heard of this problem on the X...I'm looking for suggestions. Has to be a connection ?
Thanks for all your help.
Ernie.
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#9
#10
That's odd. Most Excursions hav the GPCM. Either way it looks like your problem is in the instrument cluster or wiring.
P0381 a Glow Plug Indicator Circuit Malfunction
KD3 DIAGNOSTIC TROUBLE CODE (DTC) P0381
DTC P0381 is set when the PCM detects a malfunction in the glow plug indicator lamp circuit.
Possible causes:
open/grounded circuit
open WAIT TO START light
open fuse. Refer to wiring diagram for fuse number and location.
Key on, engine running.
It's not the glow plugs, GPR/GPCM, it's the circuitry associated with the light. Does your WTS light come on for 1 - 10 seconds as usual?
Since you have seemed to narrow it down to a fuse issue, you might consider removing the fuse panel. The 99 Super Duty's had some issues with a leaking windshield that dripped on the back of the fuse panel. You can look and see if there is any evidence of water on the back of the panel.
Are the fuses loose in the holders or do they just have a bad connection? Any signs of corrosion on the fuse blades?
P0381 a Glow Plug Indicator Circuit Malfunction
KD3 DIAGNOSTIC TROUBLE CODE (DTC) P0381
DTC P0381 is set when the PCM detects a malfunction in the glow plug indicator lamp circuit.
Possible causes:
open/grounded circuit
open WAIT TO START light
open fuse. Refer to wiring diagram for fuse number and location.
Key on, engine running.
It's not the glow plugs, GPR/GPCM, it's the circuitry associated with the light. Does your WTS light come on for 1 - 10 seconds as usual?
Since you have seemed to narrow it down to a fuse issue, you might consider removing the fuse panel. The 99 Super Duty's had some issues with a leaking windshield that dripped on the back of the fuse panel. You can look and see if there is any evidence of water on the back of the panel.
Are the fuses loose in the holders or do they just have a bad connection? Any signs of corrosion on the fuse blades?
#11
Chris (F350-6)
I am not pulling any trouble codes. When the trucks starts and runs normal the WTS light functions normal. I just touch some of the fuses on the panel and everything shuts down. When it won't start normally after moving fuses around I get a THEFT LIGHT code 16. One blink...pause...six blinks. I don't know that code. Have not found it yet but am search around for the definition. Mess with the fuses a little and all is normal and it starts fine. Just need to touch a fuse or two and everything goes haywire with a dash idiot light show and then dies. Looks like I need to remove the fuse panel torx screws and split the case to see what everything looks like in there. That's where I am at this point. Have a Stancore relay to install but not sure if it will work with the shunt I have on the original solenoid. THANK FOR YOUR ASSIST.
Ernie.
I am not pulling any trouble codes. When the trucks starts and runs normal the WTS light functions normal. I just touch some of the fuses on the panel and everything shuts down. When it won't start normally after moving fuses around I get a THEFT LIGHT code 16. One blink...pause...six blinks. I don't know that code. Have not found it yet but am search around for the definition. Mess with the fuses a little and all is normal and it starts fine. Just need to touch a fuse or two and everything goes haywire with a dash idiot light show and then dies. Looks like I need to remove the fuse panel torx screws and split the case to see what everything looks like in there. That's where I am at this point. Have a Stancore relay to install but not sure if it will work with the shunt I have on the original solenoid. THANK FOR YOUR ASSIST.
Ernie.
#12
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jcp0003
1999 - 2003 7.3L Power Stroke Diesel
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04-01-2008 02:31 PM