P0623 code
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P0623 code
Whats this code mean? It just got it today, I had it on high idle when I started it at 6:20 and left at 6;30, It was like the exhaust pressure valve. When I'm steady driving it sounds like a jet, and I can give it some fuel and it goes away. Is it the mapp sensor? P0236 Turbocharger Boost Sensor A Circuit Range/Performance. Thats what it reads.It done it all the way home like this, Even when it was warm
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Joined: Feb 2009
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From: Plankinton, SD
Have you unplugged the ebpv? Your boost gauge won't read unless you get after it a little in gear. If the ebpv is out of the equation, unplug the map and drive it, cel will come on but if it runs better the map is bad. Check out this on the map
TSB 94-23-15 - 1994-1997 Power Stroke FAQ
TSB 94-23-15 - 1994-1997 Power Stroke FAQ
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Joined: Feb 2009
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From: Plankinton, SD
It hurts nothing to unplug it, it should disable the ebpv in the open position. Lots of guys have problems with the ebpv sticking closed and making that sound you are talking about with no power, it closes off the exhaust. Easy solution is to unplug it, all it does is help the motor warm up faster. Mines is completely removed, I don't have to worry about it sticking open, actuator leaking oil, etc.
I'd unplug the ebpv first, then try the map.
I'd unplug the ebpv first, then try the map.
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Joined: Feb 2009
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From: Plankinton, SD
If you drove it to work with the map unplugged and it ran better your map is either bad or make sure the hose isn't plugged or cracked first before you buy one.
You need to take the exhaust side of the turbo off and remove the butterfly valve in there and plug a hole. To remove the actuator from the pedestal it needs to be cut off and a few holes welded up. You can just remove the actuator rod and put a pipe plug in the hole. If the ebpv is working properly you of course don't have to worry about it unless you want to.
You need to take the exhaust side of the turbo off and remove the butterfly valve in there and plug a hole. To remove the actuator from the pedestal it needs to be cut off and a few holes welded up. You can just remove the actuator rod and put a pipe plug in the hole. If the ebpv is working properly you of course don't have to worry about it unless you want to.
Postmaster
Joined: Sep 2007
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From: Medford Oregon
Whats this code mean? It just got it today, I had it on high idle when I started it at 6:20 and left at 6;30, It was like the exhaust pressure valve. When I'm steady driving it sounds like a jet, and I can give it some fuel and it goes away. Is it the mapp sensor? P0236 Turbocharger Boost Sensor A Circuit Range/Performance. Thats what it reads.It done it all the way home like this, Even when it was warm
If you can monitor EBP sensor real time you will see on a normal summer morning it's probably around 15 PSI and with a good boost maybe 19 PSI, no chip. Anything below 30* and especially 25* or below and as you drive the EBP sensor reports anywhere between 20 - 43 PSI. That is the valve closing on demand with your foot with your go peddle.
The key here is it's scarey if you don't understand what's happening or can't watch real data. I'm not sure if a chip can disable that function or not, or enhance it, I don't have one.
FOREIGN GURU
Joined: Jul 2006
Posts: 7,655
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From: Celaya, Gto. MX
If you drove it to work with the map unplugged and it ran better your map is either bad or make sure the hose isn't plugged or cracked first before you buy one.
You need to take the exhaust side of the turbo off and remove the butterfly valve in there and plug a hole. To remove the actuator from the pedestal it needs to be cut off and a few holes welded up. You can just remove the actuator rod and put a pipe plug in the hole. If the ebpv is working properly you of course don't have to worry about it unless you want to.
You need to take the exhaust side of the turbo off and remove the butterfly valve in there and plug a hole. To remove the actuator from the pedestal it needs to be cut off and a few holes welded up. You can just remove the actuator rod and put a pipe plug in the hole. If the ebpv is working properly you of course don't have to worry about it unless you want to.
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