Register Login
Shop4Parts - UK's largest online superstore for FIAT and Alfa Romeo parts
Reply
 
Thread Tools Search this Thread
Old 01-03-2019   #1
Join Date: Mar 2019
Posts: 3
Thanks: 0
Trader Rating: 0
United Kingdom 
P0520 fault will not go away & everything changed

I have a 1.3 diesel multijet Qubo (55kw)
I have the error code P0520, and check engine message
I have changed the 3 sensors relating to oil pressure sensors/switches, changed oil pump, changed timing chain, done full oil change, oil filter, in fact everything I can think of on the oil side and sensor/switches side to do with oil pressure switches/sensors
The code has been cleared several times but still comes up.
Can anyone please help with me getting this fixed, its only done 70k
Many thanks in advance
Likes varesecrazy, Qube O liked this post
__________________
FIAT Forum Useful Links:
Donate to FF | Buy FF Merchandise | Classifieds | FF Insurance | How-to Guides

raindropsies is offline Reply With Quote Quote 
Old 02-03-2019   #2
Join Date: Apr 2011
Location: Near the M4
Posts: 25,205
Thanks: 955
Trader Rating: 0
varesecrazy has donated!
United Kingdom 
Re: P0520 fault will not go away & everything changed

How old is it. ?
DPF equipped?
Likes Qube O liked this post
__________________
FIAT Forum Useful Links:
Donate to FF | Buy FF Merchandise | Classifieds | FF Insurance | How-to Guides

varesecrazy is offline Reply With Quote Quote 
Old 02-03-2019   #3
Join Date: Oct 2017
Location: West Yorkshire
Posts: 2,826
Thanks: 143
Trader Rating: 0
chris3234 has donated!
United Kingdom 
Re: P0520 fault will not go away & everything changed

If all that has been done and checked I'd be looking at the wiring to the sensor
Likes Qube O liked this post
__________________
FIAT Forum Useful Links:
Donate to FF | Buy FF Merchandise | Classifieds | FF Insurance | How-to Guides

chris3234 is offline Reply With Quote Quote 
Old 08-03-2019   #4
Join Date: Mar 2019
Posts: 3
Thanks: 0
Trader Rating: 0
United Kingdom 
Quote Originally Posted by varesecrazy View Post
How old is it. ?
DPF equipped?
Yes has DPF
2011 61 plate
Likes Qube O liked this post
__________________
FIAT Forum Useful Links:
Donate to FF | Buy FF Merchandise | Classifieds | FF Insurance | How-to Guides

raindropsies is offline Reply With Quote Quote 
Old 08-03-2019   #5
Join Date: Apr 2011
Location: Near the M4
Posts: 25,205
Thanks: 955
Trader Rating: 0
varesecrazy has donated!
United Kingdom 
Quote Originally Posted by raindropsies View Post
Yes has DPF
2011 61 plate
So when it had an oil and filter change. What did the degradation counter say?

And did it reset ok.? I suspect this may be related to your issue.
Likes Qube O liked this post
__________________
FIAT Forum Useful Links:
Donate to FF | Buy FF Merchandise | Classifieds | FF Insurance | How-to Guides


Last edited by varesecrazy; 08-03-2019 at 20:18.
varesecrazy is offline Reply With Quote Quote 
Old 03-04-2019   #6
Join Date: Mar 2019
Posts: 3
Thanks: 0
Trader Rating: 0
United Kingdom 
Re: P0520 fault will not go away & everything changed

Quote Originally Posted by varesecrazy View Post
So when it had an oil and filter change. What did the degradation counter say?

And did it reset ok.? I suspect this may be related to your issue.
Oil degradation was reset fine

So an update but issue still exist

Oil pump, filter, sensors, switches, timing chain, oil,
Oil pressure test done and as it should be, its been "graphed" cold and hot and both show as they should so myself, 2 garages are now baffled as to what can be done, it's been to a specialist diagnostic place (not fiat) as the fiat one said they had this before with a previous qubo and were unable to fix, but the diagnostic garage its just been to is unable to map the code out

Feel like hitting my head on a wall now can anyone suggest anything that has not been done so this can be fixed, the car runs as it should just very annoying to have the engine light on and display say insufficient oil pressure to start with and then goes to say stop start unavailable
Likes Qube O liked this post
__________________
FIAT Forum Useful Links:
Donate to FF | Buy FF Merchandise | Classifieds | FF Insurance | How-to Guides

raindropsies is offline Reply With Quote Quote 
Old 04-04-2019   #7
My Fiorino's a Qubo..
 
Red Van Man's Avatar
Join Date: Feb 2013
Location: Yorkshire
Posts: 544
Thanks: 31
Blog Entries: 2
Trader Rating: 0
Red Van Man has donated!
United Kingdom 
Re: P0520 fault will not go away & everything changed

Only thing I can think of is (remembering a Mini from decades ago...) take out the pressure switch and check it's not gunked up.
In those days it gave a bad reading of blocked filter (I presume?) no computer to throw a wobbler at you, you just took things apart and cleaned them!

Worth a shot if you can find it.

R-V-M


Quote Originally Posted by raindropsies View Post
Oil degradation was reset fine

So an update but issue still exist

Oil pump, filter, sensors, switches, timing chain, oil,
Oil pressure test done and as it should be, its been "graphed" cold and hot and both show as they should so myself, 2 garages are now baffled as to what can be done, it's been to a specialist diagnostic place (not fiat) as the fiat one said they had this before with a previous qubo and were unable to fix, but the diagnostic garage its just been to is unable to map the code out

Feel like hitting my head on a wall now can anyone suggest anything that has not been done so this can be fixed, the car runs as it should just very annoying to have the engine light on and display say insufficient oil pressure to start with and then goes to say stop start unavailable
Likes Qube O liked this post
__________________
2017 Qubo Hillbilly Azure 1.3 MJ 80PS Dualogic
Red Van Man is offline Reply With Quote Quote 
Old 15-02-2020   #8
Join Date: Jun 2018
Posts: 16
Thanks: 1
Trader Rating: 0
United Kingdom 
Re: P0520 fault will not go away & everything changed

[QUOTE=raindropsies;4474234]Oil degradation was reset fine

Hi

Did you ever get a solution? I have exactly the same challenge so any update/solution would be very welcome

Thanks
Likes Qube O liked this post
__________________
FIAT Forum Useful Links:
Donate to FF | Buy FF Merchandise | Classifieds | FF Insurance | How-to Guides

RoyAB is offline Reply With Quote Quote 
Old 15-02-2020   #9
Join Date: Apr 2011
Location: Near the M4
Posts: 25,205
Thanks: 955
Trader Rating: 0
varesecrazy has donated!
United Kingdom 
[quote=RoyAB;4519637]
Quote Originally Posted by raindropsies View Post
Oil degradation was reset fine

Hi

Did you ever get a solution? I have exactly the same challenge so any update/solution would be very welcome

Thanks
Hi

More info please..

Codes..?

Service info.. degradation..

Miles on vehicle etc

@Poperon
Likes Qube O liked this post
__________________
FIAT Forum Useful Links:
Donate to FF | Buy FF Merchandise | Classifieds | FF Insurance | How-to Guides

varesecrazy is offline Reply With Quote Quote 
Old 15-02-2020   #10
Join Date: Jun 2018
Posts: 16
Thanks: 1
Trader Rating: 0
United Kingdom 
Re: P0520 fault will not go away & everything changed

Hiya

History:

Had a suspected 'timing chain jump' - lost power, limped home, ground to halt. No start. Horrendous rattle from the timing chain so ... a jumped tooth/messed timing?

Stripped it all down (what a palaver!!)

Turned out to be disintegrated guide rattling about & stretched chain - did the chain, guides etc. and in the process checked the oil pump (as you do) primed on the bench, seemed fine... Rockers OK. Reassembled.

Oil change, new filter. No leaks.

Still no start... eventually, worked through every sensor till I got to the fuel rail sensor. Changed, started, runs sweet as... till warm, then drops to limp mode 'check engine'

MUltiscan 'DPF clogged - level 2'. Passive regen... 100% So 'all good' (Runs through all revs like new). Stop. done.

But no! Start again runs with no warnings till around 50deg. (warm) then 'insufficient oil pressure' on the dash. What!!?

Run with Multiscan - anything around (or over) 1K rpm = Oil pressure 'normal' below that Oil pressure 'off' and 'insufficient oil pressure' on the dash

So, pulled pressure sensor - not stuck. Working.

Connected oil pressure gauge. At idle - swings between 0 and 3bar!

Hmm, baffled.

Possibly 'oil pressure regulator valve'? (this has the wretched stop-start)

80K

New injectors in the same month (1 over-fueling so changed the lot)
Likes Qube O, varesecrazy liked this post
__________________
FIAT Forum Useful Links:
Donate to FF | Buy FF Merchandise | Classifieds | FF Insurance | How-to Guides


Last edited by RoyAB; 15-02-2020 at 16:40.
RoyAB is offline Reply With Quote Quote 
Old 16-02-2020   #11
Join Date: Jun 2018
Location: Lancashire
Posts: 66
Thanks: 0
Trader Rating: 0
United Kingdom 
Re: P0520 fault will not go away & everything changed

A very long shot, but have any of you with this issue tried changing your oil cap? I did an oil change on mine today and unintentionally started it with the oil cap off. Straight away the cooling fan came on even though it was cold, but it went off as soon as I refitted the cap so the ecu must have somehow detected the cap was missing.

The cap has an O ring on it, come to think of it so does the dipstick. Is it possible that if the seal is perished or missing is it possible it could have an effect on the oil pressure???
Likes Qube O, varesecrazy liked this post
__________________
Fiat Fiorino SX Multijet van, Ford KA & Vauxhall Astra H owner.
stuartinlancashire is offline Reply With Quote Quote 
Old 16-02-2020   #12
Join Date: Apr 2011
Location: Near the M4
Posts: 25,205
Thanks: 955
Trader Rating: 0
varesecrazy has donated!
United Kingdom 
Re: P0520 fault will not go away & everything changed

Oil pressure : no

But may detect it through the myriad of DPF related info..

Fan running is a regen thing
Likes Qube O, stuartinlancashire liked this post
__________________
FIAT Forum Useful Links:
Donate to FF | Buy FF Merchandise | Classifieds | FF Insurance | How-to Guides

varesecrazy is offline Reply With Quote Quote 
Old 17-02-2020   #13
Join Date: Jun 2018
Posts: 16
Thanks: 1
Trader Rating: 0
United Kingdom 
Re: P0520 fault will not go away & everything changed

Back on the 'boulder up a hill' again this am. latest:

Start - straight to 3 bar. No variance with revs. Hot or cold.
and/or
Start - stays at 0 bar till rev, then straight to 3 bar.

Urgh...

Thinks - sticking pressure relief valve? Hooray, turns out to be the only thing easily accessible on this wretched vehicle.

But boo, not obviously stuck, though plunger doesn't 'drop out' due to gravity which I (and my wonderful 'on the end of a phone' mechanic Dan at JD Auto Kings Lynn - did the injectors and an absolute gent on this) think it should.

Also, Qubo should idle at around .5bar and up to 4bar under revs, so consensus is now knackered oil pump - possibly distorted timing cover on re-fitting binding the relief valve 'just enough. (Now, try finding' a 'unique to 2011 models with stop-start' timing chain cover/oil pump... Why Fiat, just why!!? Pump on way from Czech republic...)
Likes Qube O liked this post
__________________
FIAT Forum Useful Links:
Donate to FF | Buy FF Merchandise | Classifieds | FF Insurance | How-to Guides


Last edited by RoyAB; 17-02-2020 at 17:14.
RoyAB is offline Reply With Quote Quote 
Old 09-03-2020   #14
West Wilts Panda Reserve
 
CaptainTuba's Avatar
Join Date: Nov 2006
Location: Wilts
Posts: 120
Thanks: 1
Trader Rating: 0
CaptainTuba has donated!
United Kingdom 
Re: P0520 fault will not go away & everything changed

I hope you are making progress RoyAB. Apologies for not checking in so often... I see your last update was three weeks ago.

When we owned a Peugeot HDI diesel, we has a really annoying fault that took some time to understand. Sometimes is worked fine, sometimes it went into limp home mode. Someone else had a similar issue nearby and we ended up comparing the cars side by side.

The fault turned out to be a vacuum leak on the sensor side.
A worn diaphragm had pin holes that lost vacuum and depending on where you were in your driving cycle it might make the difference between enough vacuum to operate a lever or none at all.

I don't know enough about the engine yet, but perhaps the you have a root cause that shows different fault modes depending on external conditions.

Anyone got a diagram of the sensors/actuators involved and how they sense/actuate?

I hope that helps - I know from experience that these issues can drive you mad.

Keep posting updates...Good luck
C.T.
Likes Qube O liked this post
__________________
C.T.
2010 Qubo 1248cc MJ Active red /P/A/T/
1990 Panda 903cc Dance white /G/R/A/H/A/M/
CaptainTuba is offline Reply With Quote Quote 
Old 08-08-2020   #15
Join Date: May 2018
Posts: 30
Thanks: 1
Trader Rating: 0
United Kingdom 
Re: P0520 fault will not go away & everything changed

Quote Originally Posted by raindropsies View Post
I have a 1.3 diesel multijet Qubo (55kw)
I have the error code P0520, and check engine message
I have changed the 3 sensors relating to oil pressure sensors/switches, changed oil pump, changed timing chain, done full oil change, oil filter, in fact everything I can think of on the oil side and sensor/switches side to do with oil pressure switches/sensors
The code has been cleared several times but still comes up.
Can anyone please help with me getting this fixed, its only done 70k
Many thanks in advance
I know this is a fairly old post now but have you been able to shed any light on this problem??

I too have a 2011 Qubo 1.3MJ and have the same code as you and mine has just done 57K and fully serviced every year.
A mobile mechanic told me it's defo the oil pump BUT I took it to a trusted local garage for a second opinion and he is sure it's not the pump.

I have it booked in with FIAT on Monday 17th August to see what they say.
Likes Qube O liked this post
__________________
FIAT Forum Useful Links:
Donate to FF | Buy FF Merchandise | Classifieds | FF Insurance | How-to Guides

Noony is offline Reply With Quote Quote 
Reply
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump
Similar Threads
Thread Thread Starter Forum Replies Last Post
Qubo If you suffer obd code P0520 richardfliss Newbie Central 1 11-01-2019 12:51
(T) Error P0520 after Battery-change olef Grande Punto 7 25-09-2017 20:37
(T) Fault code, p340 p0016 valves changed, timing problem reeceh96 Grande Punto 3 19-09-2017 14:33
(T) Engine fault back again since battery changed. chrissib Stilo 9 28-10-2013 21:35
Anyone have changed the B&M unit? Black adder Blue and Me 0 27-11-2010 11:41