Glow Unit Error 4203
#1
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Joined: May 2013
Posts: 43
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From: Netherlands
My Ride: BMW F10 528xi
Model Year: 2013
Glow Unit Error 4203
Hello,
My car started a week ago very hard when it was cold. I used a diagnostic tool to see if there were any errors and I found error code 4203. So I bought a new glow unit, and the error code is still showing.
Now this morning (also a new battery) the car started fine.
Also when cold starting the car (first time) and open the bonnet, a very small of smoke comes. and disappears after a while.
The diagnostic tool doesn't say the glow plugs are faulty, but I think some of them are not working well...
What do you guys think?
Thanks
My car started a week ago very hard when it was cold. I used a diagnostic tool to see if there were any errors and I found error code 4203. So I bought a new glow unit, and the error code is still showing.
Now this morning (also a new battery) the car started fine.
Also when cold starting the car (first time) and open the bonnet, a very small of smoke comes. and disappears after a while.
The diagnostic tool doesn't say the glow plugs are faulty, but I think some of them are not working well...
What do you guys think?
Thanks
#2
Thread Starter
New Members
Joined: May 2013
Posts: 43
Likes: 0
From: Netherlands
My Ride: BMW F10 528xi
Model Year: 2013
#3
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Joined: Jul 2014
Posts: 212
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From: brisbane
My Ride: 2007 E60 530d
Model Year: 2007
Engine: M57
Did you reset/clear the error code after installing the glow unit?
You probably don't want to get back into the engine right away but it might be worthwhile checking the resistance on the plugs just to be sure.
I had 5 bad plugs in mine (with error codes) but the controller was good.
Cheers.
You probably don't want to get back into the engine right away but it might be worthwhile checking the resistance on the plugs just to be sure.
I had 5 bad plugs in mine (with error codes) but the controller was good.
Cheers.
#5
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Joined: Jul 2008
Posts: 420
Likes: 5
From: Atlantic Beach, Fl
My Ride: e60 530i e21 320i
Model Year: 2005 1981
Engine: M54 M10
Have you looked when engine is cold, before first start of the day, to see if any of the injector connections or fuel rail have any wet spots where fuel is bleeding down overnight? Could well be a fuel leak that prevents all injectors from properly itemizing the diesel during first start. Or is your starting problem truly tied to unusually cold temperature periods?
#6
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Joined: Jul 2014
Posts: 212
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From: brisbane
My Ride: 2007 E60 530d
Model Year: 2007
Engine: M57
The plug error is detected as high resistance. New ones I think were around 5 ohms. I have never heard on bad ones being undetected so probably not the plugs. As jtbgonesailing says might be fuel supply/atomization issue? Out of my depth there I'm afraid.
#7
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Joined: Sep 2013
Posts: 41
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From: Basel
My Ride: BMW E60 530d 2004
Model Year: 2004 Apr
Engine: M57N
Did you reset/clear the error code after installing the glow unit?
You probably don't want to get back into the engine right away but it might be worthwhile checking the resistance on the plugs just to be sure.
I had 5 bad plugs in mine (with error codes) but the controller was good.
Cheers.
You probably don't want to get back into the engine right away but it might be worthwhile checking the resistance on the plugs just to be sure.
I had 5 bad plugs in mine (with error codes) but the controller was good.
Cheers.
Could you please explain in more details how to check the resistance on the plugs? I mean at what point? How to use the multi-meter I know. )
Thanks:
Tigran
#8
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Joined: Jul 2014
Posts: 212
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From: brisbane
My Ride: 2007 E60 530d
Model Year: 2007
Engine: M57
One probe end on the block and the other on the end of the glow plug (cable removed). The meter might show a little higher resistance without removing the plugs - but it will be obvious which are the bad ones (if any).
Mine showed around 5 ohms for the good ones and thousands of ohms or open circuit for the bad ones.
Mine showed around 5 ohms for the good ones and thousands of ohms or open circuit for the bad ones.
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