Hi Andy. Sorry I can’t help with the location of switches. Nor would I know if the filter has caused the problem. I’m not that mechanically minded. Mine is due for a service in October so will hopefully investigate more then. Mine hasn’t even come up with a code yet but the light is starting to come on more frequently. Please keep us posted
Information should be in here:
[T6_measured] 01-Engine - Oil pressure switches & Oil level sensor
For future reference. Applicable to T6 EU6 engines. Oil pressure switch - F1. Switch pressure 2.3 to 3.0 bar Oil pressure switch for reduced oil pressure - F378 (919-040) Oil pressure regulating valve N428 (906-030) References: Workshop Manual Transporter 2016- Engines: CXFA, CXGA, CXGB...
Jerry100
New Member
Check Electricals: Inspect wiring and connectors for the oil pressure switches.
ECU Reset: Disconnect the battery for 30 mins to reset error codes.
Part Quality: Make sure you're using genuine or high-quality aftermarket parts.
Oil Check: Verify oil type and level.
Advanced Scan: Consider a professional diagnostic scan for more detailed insights.
Second Opinion: If all else fails, consult another mechanic.
ECU Reset: Disconnect the battery for 30 mins to reset error codes.
Part Quality: Make sure you're using genuine or high-quality aftermarket parts.
Oil Check: Verify oil type and level.
Advanced Scan: Consider a professional diagnostic scan for more detailed insights.
Second Opinion: If all else fails, consult another mechanic.
Michael Croisdale
New Member
Any update on this. I have done both sensors and pressure regulator. Light stayed off for 2 month but back on now.
Only does it when van cold.
Only does it when van cold.
dlw
New Member
UPDATE
Eventually ended up in VW for this issue as nowhere managed to fix it, I had an engine mount broken and a damaged wire, this they thought fixed it, then it came back again, they checked the oil pressure switches again which were new, they then thought one of the switches was faulty, this worked, BUT ONLY FOR TWO MONTHS, then back to flashing coil light and loss of power, they now think the sump is gunked up and causing the oil pressure switch to stop working and causing the issue to return.
They now want to do an engine flush , take the sump off etc!!
So since about October last year I still have the issue, I hope this helps others if you have this problem!!
I’ll update again when it goes back in , in a couple of weeks!
Hi,
Can I ask what engine mount was broken? I think one of mine is broken as I get a clunk when moving on and off the accelerator
Hi P1les have you had an update with this issue? I have the same faults. Coincidentally I have had the issues since having my front engine mount replaced so hopefully it’s an issue with a damaged wire.
Eventually ended up in VW for this issue as nowhere managed to fix it, I had an engine mount broken and a damaged wire, this they thought fixed it, then it came back again, they checked the oil pressure switches again which were new, they then thought one of the switches was faulty, this worked, BUT ONLY FOR TWO MONTHS, then back to flashing coil light and loss of power, they now think the sump is gunked up and causing the oil pressure switch to stop working and causing the issue to return.
They now want to do an engine flush , take the sump off etc!!
So since about October last year I still have the issue, I hope this helps others if you have this problem!!
I’ll update again when it goes back in , in a couple of weeks!
NickyBrown08
Member
Hi, has anyone managed to rectify the issue? Mine started did the exact same thing, go over 3000rpm and comes flashing with stop start error. Turn engine on and off and resets. Had the van 6 week so it’s gutting. Has anyone changed the Battery? Haven’t had a look at error codes yet but will be today.
Thank you.
Thank you.
Update-my problem has now morphed and I no longer get flashing coil light but I now get an amber oil can warning and service message in the MFD at ignition on. VCDS shows that the oil sensor has lost contact with the gauges. So that’s what I’m going to focus on. Not sure if that helps anyone out.
george_holland
New Member
So I have had the exact same issue, 2018 T6. Glowplug light comes on when engine cold above 2500rpm, turn off and on when warm it disappears. First garage replaced the oil pressure switch, that fixed it for 1 month then back on. Went to another specialist who diagnosed it to the oil pressure regulation valve. They said this valve closes a bit when warm but had jammed in position. He said this part had been superseded by VW, perhaps as they were a known fault. Reading this forum it seems like its around that age vehicle that gets the problem. They unfortunately fitted a faulty valve, and red oil light came on after 5 minutes of driving, returned to the garage and they rectified with a new part. All seems to be working fine again now, but only 1 week in. Will report again in 2 months. Thanks to Vee W services in Bristol for great customer service and professionalism in fixing this
NickyBrown08
Member
Mine hasn’t done it in a while, had my checked with a diagnostic machine. Had a few errors but nothing major. Cleared them all and now seems fine. Drives perfect, just letting it fully warm up before I think about giving it some. But I drive like a granny so fingers crossed will be fine. Hope the issue has been sorted for yourself.
Also just had this in my 2018 T6 this evening. Turned off and on and it went away. I hope this isn't the start of major issues since I've only had the van a couple of months. 
NickyBrown08
Member
Mine hasn’t come on now for a few weeks. Had it checked and cleared on diagnostics machine. Luckily work next to a garage and they did this for free, he also has a T6.
He mentioned it can come on with allot of different problems. I have been on a few long runs and loads of short runs and mine hasn’t been on like I said. Hopefully mine has sorted it self. Hope you get your sorted. Like you only had my van weeks. It’s gutting when you seen lights flash up.
He mentioned it can come on with allot of different problems. I have been on a few long runs and loads of short runs and mine hasn’t been on like I said. Hopefully mine has sorted it self. Hope you get your sorted. Like you only had my van weeks. It’s gutting when you seen lights flash up.
How we getting on another week later?
Collected my 2017 T6 T32 yesterday and it has the flashing coil. Read this thread with interest, particularly as mine also seemingly has a ‘stop/start’ fault. I assumed this was due to battery charge level as the van was stood for 6 months but perhaps they’re linked
Collected my 2017 T6 T32 yesterday and it has the flashing coil. Read this thread with interest, particularly as mine also seemingly has a ‘stop/start’ fault. I assumed this was due to battery charge level as the van was stood for 6 months but perhaps they’re linked
Haven't driven mine since but will update this thread when I do.
NickyBrown08
Member
Hi,
Mine has had that problem too. Think mine needs a new battery, mine is a daily runner so doesn’t come on often. I have also had the coil light flashing and gone into limp mode a couple of times. I had a fault and my local VW specialist told me it is probably the turbo actuator, I was booked in for the fault but he suggested turbo treatment as the can stick. Put some in and fault has gone. Had it re checked with plug in reader and no faults at all. So hopefully a £15 fix. Advised to use a testament every 5-6 tanks of fuel. Fingers crossed it’s now sorted. It’s gutting saving for a van and you see dreaded lights come on.
dlw
New Member
Check the wiring on top of the engine, I had the same issue and found that a wire going to a sensor on a water pipe had worn away, I fixed it and haven't had an issue since
A few pictures of my repair at the bottom of this thread
Any Northamptonshire members
I have really struggled to find someone local that works on the vw conversions Are you a vw fan Robert or do you work on them it’s always good to have a local contact. Do you have a website? Just a vw fan but can do the basics on them...
Had a run up to Southport last weekend and it behaved itself, no sign of any issues. So I'll be watching this space...
NickyBrown08
Member
So mine seems to be the turbo Actuator, drives perfectly, but sometimes when you give it some the coil light flashes and goes into limp mode. Few people spoke to say it could be sticking.
I was at @Dav-Tec on Sat for a remap and limiter to be taken off, couldn’t get remap as fault was still there. Got advised to put some treatment in and give it a good drive, high revs. Hopefully this does it.
Dad had the same issue with his Ford Mondeo, he persisted with the treatment and spray and finally fixed the issue.
Will be back @Dav-Tec when the issue is fixed, if anyone needs a remap or help and around Chesterfield area I would highly recommend. Was absolutely spot on and very helpful.
I was at @Dav-Tec on Sat for a remap and limiter to be taken off, couldn’t get remap as fault was still there. Got advised to put some treatment in and give it a good drive, high revs. Hopefully this does it.
Dad had the same issue with his Ford Mondeo, he persisted with the treatment and spray and finally fixed the issue.
Will be back @Dav-Tec when the issue is fixed, if anyone needs a remap or help and around Chesterfield area I would highly recommend. Was absolutely spot on and very helpful.
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