Vehicle Protection System / Canbus Errors - Alfa Romeo Forum
You are currently unregistered, register for more features.    
 
Thread Tools Search this Thread
(Post Link) post #1 of 14 Old 28-07-16 Thread Starter
Status: -
AO Member
 
Join Date: Apr 2009
Location: United Kingdom
County: Northamptonshire
Vehicle Protection System / Canbus Errors

Hi All,

I have read hundreds of topics about this and am still no nearer to solving my problem.

My 2006 Alfa 159 2.2 JTS has developed the dreaded VPS not available warning. I have tried all of the connections etc, disconnecting the battery, and all to no avail. It started after I replaced the front wheel bearing. I did use a broom handle to hold down the brake pedal so I could crack the hub nut, so I thought I may have done something to the ECU connector or brake / clutch switches, but I have checked and cleaned all of those with no sucess. (The brake lights work). I should mention that the car starts and runs fine, just the VPS warning stays on all the time and the steering doesn't lock.

I get the following error codes when I scan the electronic steering ECU with Multiecuscan:

U1601 Canbus Network Error

As I say, have checked all connectors, done the 10 minute battery disconnect etc to no avail. The only other thing to mention is that I have a Chinese DVD player fitted which has a canbus adaptor fitted to allow the steering wheel controls to work on the radio. I have had no problems at all with this, and it was fitted months before the VPS fault began.

Any (new) suggestions would be gratefully received!
shedload is offline  
Sponsored Links
Advertisement
 
Status: -
AO Member
 
Join Date: Oct 2012
Location: United Kingdom
County: North Yorkshire
Hi sorry to hear your news- I ve made quite a few posts on here about this subject as I too had the same problem after I replaced power steering reservoir/fluid.
Does your steering lock engage/disengage?
What happens after you insert the key?
Paul777 is offline  
Status: -
AO Silver Member
 
Rewe's Avatar
 
Join Date: Apr 2011
Location: United Kingdom
County: Norfolk
Quote:
Originally Posted by shedload View Post
Hi All,

I have read hundreds of topics about this and am still no nearer to solving my problem.

My 2006 Alfa 159 2.2 JTS has developed the dreaded VPS not available warning. I have tried all of the connections etc, disconnecting the battery, and all to no avail. It started after I replaced the front wheel bearing. I did use a broom handle to hold down the brake pedal so I could crack the hub nut, so I thought I may have done something to the ECU connector or brake / clutch switches, but I have checked and cleaned all of those with no sucess. (The brake lights work). I should mention that the car starts and runs fine, just the VPS warning stays on all the time and the steering doesn't lock.

I get the following error codes when I scan the electronic steering ECU with Multiecuscan:

U1601 Canbus Network Error

As I say, have checked all connectors, done the 10 minute battery disconnect etc to no avail. The only other thing to mention is that I have a Chinese DVD player fitted which has a canbus adaptor fitted to allow the steering wheel controls to work on the radio. I have had no problems at all with this, and it was fitted months before the VPS fault began.

Any (new) suggestions would be gratefully received!
Does it do it all the time? Mine sometimes does on the first start of the day but normally won't after that. Like yours, it causes no problem other than the occasional warning light. I'm also interested in the solution!

So far I've eliminated battery voltage as the issue but not looked beyond that.
Rewe is offline  
Status: -
AO Member
 
Join Date: Oct 2012
Location: United Kingdom
County: North Yorkshire
If it's saying you have a canbus network problem you could try a proxy alignment to get all the nodes talking to each other.
The Steering Lock ecu has all the pre-ignition circuits-start permissions routed through it aswell as containing the electronic column lock.
If the lock isn't working then it seems like you may need a new ecu unit.
Paul777 is offline  
(Post Link) post #5 of 14 Old 29-07-16 Thread Starter
Status: -
AO Member
 
Join Date: Apr 2009
Location: United Kingdom
County: Northamptonshire
Quote:
Originally Posted by Paul777 View Post
Hi sorry to hear your news- I ve made quite a few posts on here about this subject as I too had the same problem after I replaced power steering reservoir/fluid.
Does your steering lock engage/disengage?
What happens after you insert the key?
My steering lock does not engage. After I insert the key, the ignition comes on as normal and the car starts and runs fine, just the VPS warning flashes up onece and then the warning light (Steering wheel and padlock) comes on and stays on.
shedload is offline  
(Post Link) post #6 of 14 Old 29-07-16 Thread Starter
Status: -
AO Member
 
Join Date: Apr 2009
Location: United Kingdom
County: Northamptonshire
Quote:
Originally Posted by Rewe View Post
Does it do it all the time? Mine sometimes does on the first start of the day but normally won't after that. Like yours, it causes no problem other than the occasional warning light. I'm also interested in the solution!

So far I've eliminated battery voltage as the issue but not looked beyond that.
Does it all of the time. As I said, the car starts and drives fine...
shedload is offline  
(Post Link) post #7 of 14 Old 29-07-16 Thread Starter
Status: -
AO Member
 
Join Date: Apr 2009
Location: United Kingdom
County: Northamptonshire
Quote:
Originally Posted by Paul777 View Post
If it's saying you have a canbus network problem you could try a proxy alignment to get all the nodes talking to each other.
The Steering Lock ecu has all the pre-ignition circuits-start permissions routed through it aswell as containing the electronic column lock.
If the lock isn't working then it seems like you may need a new ecu unit.
How do I do a proxy alignment? That's a new one to me :-)

I did check with a couple of Alfa Specialists about the ECU, and they all said it was unlikely to be the ECU, but offered no other solution.

Can you fit a second hand ECU or are they coded?
shedload is offline  
Status: 16Italiancylinders(V 6,N4,L2,V2,V2)+1Span ish
AO Silver Member
 
swq4's Avatar
 
Join Date: Apr 2011
Location: United Kingdom
County: East Riding of Yorkshire
Images: 28
Garage
Canbus Alignment is a procedure in MES for ensuring all the canbus sensors and units are talking to each other.
Some canbus errors are misleading as a poor electrical connection close to an active partner on the canbus can lead to the partner erroneously generating an error. In the OP case, it might be a poor connector or internal error on the steering lock unit.
There is a thread somewhere on here on how to take it apart
swq4 is offline  
Status: -
AO Member
 
Join Date: Oct 2012
Location: United Kingdom
County: North Yorkshire
If it's only the Steering Lock part of the Steering Ecu that's malfunctioning then it's possible to replace that part with used one-see sketcher-he has made posts on this very subject & I provided him with my used steering Ecu that had a working lock but no electrics.
Paul777 is offline  
Status: Still glancing back
AO Member
 
Ian Durrant's Avatar
 
Join Date: Jun 2015
Location: Upminster
County: Essex
Images: 10
Garage
One of my elm327 devices causes the can bus network error. When I use the one that came with my multiecuscan I don't get the error. Just a thought as it might be that the error is misleading.
Ian Durrant is offline  
Status: 159 2.4 20007 plate 19,500 DPF/EGR by Adie (AHM)
AO Silver Member
 
Join Date: May 2009
Location: United Kingdom
County: Wiltshire
Images: 16
One thing may be worth a try. My wife's 159 gave intermittent VPS errors for several years. About 18 months, maybe 2 years ago, she also got the TCP type smell that a poor connection on the Aircon controller gives. I fixed that connection and the VPS error stopped appearing at the same time.

She has the TCP smell back recently (I will need to clean the Aircon connector again when I get time) and the intermittent VPS error is once again back.

This may or may not be pure coincidence!
kandlbarrett is offline  
Status: 159 2.4 20007 plate 19,500 DPF/EGR by Adie (AHM)
AO Silver Member
 
Join Date: May 2009
Location: United Kingdom
County: Wiltshire
Images: 16
The bottom of this thread gives brief repair guide of the heater / aircon controller.

http://www.alfaowner.com/Forum/alfa-...-problems.html (Alfa 159 heater problems)
kandlbarrett is offline  
Status: Inspired
AO Gold Member
 
Verbout's Avatar
 
Join Date: Feb 2014
Location: United Kingdom
County: West Yorkshire
Images: 11
Garage
I would go with a proxy alignment.
Verbout is offline  
(Post Link) post #14 of 14 Old 03-08-16 Thread Starter
Status: -
AO Member
 
Join Date: Apr 2009
Location: United Kingdom
County: Northamptonshire
Thanks all.

There are a couple of ideas that I haven't heard of or tried. Have heard of the AC connection issue but not tried it yet. Never heard of the can bus proxy alignment. I will do some research into that and give it a try.

Will report back on my progress.
shedload is offline  
Reply

Go Back   Alfa Romeo Forum > Supported Alfa Romeo Models > Technical & Vehicle Assistance > Alfa 159, Brera & 946 Spider

Tags
canbus , errors , protection , system , vehicle

Thread Tools Search this Thread
Show Printable Version Show Printable Version
Email this Page Email this Page
Search this Thread:

Advanced Search



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

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

 
For the best viewing experience please update your browser to Google Chrome