P1796:00-6C-IPC Kick Down Switch Circuit Malfunction

[DanMK7uk]

Fault im showing and power cuts at 2k revs

Any experience of this

Cheers

(Camper in signature) van

[gt_addict]

Found this thread from 2010:-

viewtopic.php?t=78514

A member mentions either EGR or SCV could be the culprit. A different varient of the code could be CAN network issue aswell.

There is also this on a mk7 same code as yours but comes up as Instrument cluster fault:-

https://youtu.be/UVC52myt8TE

The “IPC” part of the code is Instrument Panel Control Module

[DanMK7uk]

Cheers bud

Im fairly sure its SCV but not 100 sure. Hence next question…

things developed for the worse…

After posting up, the van refused to start, took 5 cranks to go, put forscan back on when running again , fuel pressure was bouncing from 180 bar to 350 so straight away knew it was fuel.

Off i went to head home and swap vans and got to a hill van cut out, wouldn’t start and no rail pressure building

Got a towe back off a mate who lives just down road from where stuck.

Filter half empty when removed when got back

Filled filter up and started first time

Was worried prv had blown as my gauge showed 80 miles when it last ran…

So either iv got a bad sender reading iffy fuel levels or my scv has had it

I did run a run of the learns last week, as i had hunting on idle… smoothed things out a little.


Not had the van long and always good to do but i certainly thinks my scv could be dying given them readings on live data..

Be interested to hear from you guys with more knowledge than me, could low fuel cause hunting or is it almost certain my SCV is the blame…

The filter draining is making me wonder if it was just low fuel but suspect scv could be culprit to given the 180 / 350 bar bouncing readings.

The van is idling fine since filling filter iv yet to add anymore to the tank since getting back only filled the filter and all seems ok..

Iv had a cut of power at 2k revs for about a week, turbo and egr all ok so perhaps a poorly scv is the blame to this and it ties in with today the van cutting all power at 2k and then the no start… sticking in its bore maybe ?

[knobby1]

Cheers bud

Im fairly sure its SCV but not 100 sure. Hence next question…

things developed for the worse…

After posting up, the van refused to start, took 5 cranks to go, put forscan back on when running again , fuel pressure was bouncing from 180 bar to 350 so straight away knew it was fuel.

Off i went to head home and swap vans and got to a hill van cut out, wouldn’t start and no rail pressure building

Got a towe back off a mate who lives just down road from where stuck.

Filter half empty when removed when got back

Filled filter up and started first time

Was worried prv had blown as my gauge showed 80 miles when it last ran…

So either iv got a bad sender reading iffy fuel levels or my scv has had it

I did run a run of the learns last week, as i had hunting on idle… smoothed things out a little.


Not had the van long and always good to do but i certainly thinks my scv could be dying given them readings on live data..

Be interested to hear from you guys with more knowledge than me, could low fuel cause hunting or is it almost certain my SCV is the blame…

The filter draining is making me wonder if it was just low fuel but suspect scv could be culprit to given the 180 / 350 bar bouncing readings.

The van is idling fine since filling filter iv yet to add anymore to the tank since getting back only filled the filter and all seems ok..

Iv had a cut of power at 2k revs for about a week, turbo and egr all ok so perhaps a poorly scv is the blame to this and it ties in with today the van cutting all power at 2k and then the no start… sticking in its bore maybe ?

A few things happening there...P1796 is usually a Can-Bus or wiring fault....you don't have an automatic gearbox nor a kick-down switch, so it can't be that.

If the PRV was blown, it would never run.

If the fuel filter is emptying itself, you have air ingress.

RPM hunting is usually the SCV causing it, a run on the learns often helps...if not, replace the SCV, (Must be a genuine Denso item), and run the learns again. Bouncing/uneven fuel rail pressures will be a poorly SCV.

Lord Knobrot

[DanMK7uk]

Hi knobby.

Thanks for your input as ever mate.

Just been out to the van having a coffee, put forscan on live data and patiently waited… hunting began and rail pressure jumping wild from 170 to 600 bar definitely not right.

Tomorrow morning im picking up a genuine denso scv from my local diesel specialist. They only supply genuine valves and i used them previously on my other euro 4. No worries about a fake one .

Im hopeful this also explains the power loss at 2k recently and today’s breakdown sticky sliding solenoid under load my suspicions…

My thought process (may be wrong) on the filter emptying is from cranking away when the scv wasn’t allowing fuel through.. i also had the prv pipe off to see if it was pissing out.. so perhaps it drained back then ? Or is air ingress the only possibility of a partial drained filter.. van was only parked for 10 minutes not overnight so hopeful its not ingress from the usual places leak off seals / filter housings so on..!

Learns completed last week as i say, but will run a new lot once scv replaced.

Prv ok thankfully !!

[gt_addict]

Fingers crossed a new SCV sorts it mate.Obviously report back for future reference.

[DanMK7uk]

Certainly will mate cheers for help as ever !

Hoping knobby will tell me the filter draining may be as i had prv pipe off and not another issue to find (ingress) !

I dont need any more jobs lol

[DanMK7uk]

Found this thread from 2010:-

viewtopic.php?t=78514

A member mentions either EGR or SCV could be the culprit. A different varient of the code could be CAN network issue aswell.

There is also this on a mk7 same code as yours but comes up as Instrument cluster fault:-

https://youtu.be/UVC52myt8TE

The “IPC” part of the code is Instrument Panel Control Module

viewtopic.php?f=5&t=230050

Reading back through a post (searched on here for code) i realised originally made by me last year lol

I had that exact code around the time of a poorly scv on my other van

So… i think its pointing that way. Plus my erratic rail pressures soon find out tomorrow when i swap it over and run the learns. Will keep you posted.

[andz327]

Check the opaque fuel pipe that goes from filter to pump, since having this problem muself at one point I've seen a few with ssme problem, thetes a tunner hose that rubs against this plastic opaque pipe and actually erats a hole through and can be intermittent as the rubber hose sits on the hole and sort of seals it if the rubber hose not secured properly and the hole can be hard to find

Sent from my SM-G990B using Tapatalk

[knobby1]

Certainly will mate cheers for help as ever !

Hoping knobby will tell me the filter draining may be as i had prv pipe off and not another issue to find (ingress) !

I dont need any more jobs lol

PRV pipe off can certainly have the filter emptying itself....any air which is able to get into the low pressure side of the system will have the fuel gravity feeding/siphoning back to the tank.

Lord Knobrot

[knobby1]

Check the opaque fuel pipe that goes from filter to pump, since having this problem muself at one point I've seen a few with ssme problem, thetes a tunner hose that rubs against this plastic opaque pipe and actually erats a hole through and can be intermittent as the rubber hose sits on the hole and sort of seals it if the rubber hose not secured properly and the hole can be hard to find

Sent from my SM-G990B using Tapatalk

I believe he's working on a RWD....2.4 engine doesn't have the opaque line champion....I believe it's a FWD only thing.

Lord Knobrot

[DanMK7uk]

Certainly will mate cheers for help as ever !

Hoping knobby will tell me the filter draining may be as i had prv pipe off and not another issue to find (ingress) !

I dont need any more jobs lol

PRV pipe off can certainly have the filter emptying itself....any air which is able to get into the low pressure side of the system will have the fuel gravity feeding/siphoning back to the tank.

Lord Knobrot

Hopefully so.

I had nothing to bung with id normally use a small drill bit but. Was on a hill, with 20 cars behind me lol and had to work fast

[DanMK7uk]

Check the opaque fuel pipe that goes from filter to pump, since having this problem muself at one point I've seen a few with ssme problem, thetes a tunner hose that rubs against this plastic opaque pipe and actually erats a hole through and can be intermittent as the rubber hose sits on the hole and sort of seals it if the rubber hose not secured properly and the hole can be hard to find

Sent from my SM-G990B using Tapatalk

Worth a check for sure
Cheers

[DanMK7uk]

Check the opaque fuel pipe that goes from filter to pump, since having this problem muself at one point I've seen a few with ssme problem, thetes a tunner hose that rubs against this plastic opaque pipe and actually erats a hole through and can be intermittent as the rubber hose sits on the hole and sort of seals it if the rubber hose not secured properly and the hole can be hard to find

Sent from my SM-G990B using Tapatalk

I believe he's working on a RWD....2.4 engine doesn't have the opaque line champion....I believe it's a FWD only thing.

Lord Knobrot

Cheers for the suggestion on the pipe,

Im FWD on both my machines mate, hopefully my signatures are showing to you all …?

On both of mine, it runs from the filter housing to my HP pump.

On my other euro 4, fwd it did indeed split, ford wanted 100 odd quid so being on the low pressure side i made a repair about a year ago and still ok to this time.

Cheers

[DanMK7uk]

Hi guys

New scv fitted van smooth as butter at idle

230 bar

Pump learn passed

Injector pilot learn failing

Error 204 Initialisation failed or along those lines

All dtc cleared

Fuel and ch temps in range

Any pointers as ever appreciated

The van passed learns very recently as ran them when i got it as “maintenance”



Cheers