Anti skid service required (under acceleration)

[andy_d]

Originally Posted by jpb1

Volvo C30 1.6D 2008, 114,000 miles, full service history.

October 2019
- Camshaft sensor replaced

April 2021
- Camshaft sensor replaced again

July 2021
- Boost pressure sensor replaced
- Map sensor replaced

February 2022
- Anti skid light started coming back on every drive. Not always under acceleration as before. Car drivable, as not going into limp mode.
- Boost valve cleaned out (apparently full of oil)
- DPF pressure pipes checked
(these repairs/checks did not resolve the issue)

March 2022
- Anti skid light still coming back on every drive. Not always under acceleration as before. Car drivable, as not going into limp mode.
- Engine management light comes on, and remains on.
- After a few journeys, car fails to start.
- EGR valve replaced.
(this repair did not resolve the issue, just removed the engine light)

May 2022
- Anti skid light still coming back on every drive. Not always under acceleration as before. Car drivable, as not going into limp mode.
- Engine management light comes on, and remains on.
- DPF pressure checked. Apparently good readings at idle and under revs, so not blocked.
- DPF additive refilled, as apparently the car wasn't regenerating
- DPF pressure sensor replaced
- I noticed carbon deposits around injectors. The garage checked, and said that 2 are leaking slightly at bottom seals, and 2 are leaking slightly at the top (however very minor first signs, so they've advised no need to repair currently). Note, some of the seals had previously caused misfires in August 2019, and this was repaired then).
(These repairs/checks did not resolve the issue, just removed the engine light. Note, the car is now regenerating at least)

June 2022
- Anti skid light still coming back on every drive. Not always under acceleration as before. Car drivable, as not going into limp mode.
- Engine management light back on, and remains on.

Conclusion/questions
- Latest codes on my cheap code reader: P0401 EGR flow insufficient detected, P0490 EGR control circuit A high, P0341 camshaft position sensor A circuit range/performance bank 1 or single sensor. My guess is that the camshaft sensor isn't faulty, as it has been replaced twice.
- The car stutters cruising or accelerating between 1500-2000rpm in any gear, but is fine under all other conditions. From reading a lot of internet forums, I understand this could be EGR issues (however, as my new EGR valve is less than 1 month old, could something else be causing it to fail or block up again)? Otherwise, do you think the leaking injectors could be the issue (however, I don't know why the Anti Skid Light would come on for this)?
- Garage said that in May 2022, there was one error they couldn't solve: "BCM-0101 Communication between control modules. Communication problems with engine control module (ECM)". Apparently they cleaned all the connections, but they noticed the ECM has been prized open at some point in time, which worried them.

Any thoughts and advise would be much appreciated, thanks!

first things first, "cheap code reader" + volvo + diesel engine - spending ££££ on the wrong things = happens

invest in a "DICE" unit and use "VIDA" on a laptop


https://www.volvoforums.org.uk/showthread.php?t=310928

https://www.volvoforums.org.uk/showt...highlight=vida

[jpb1]

Originally Posted by andy_d

first things first, "cheap code reader" + volvo + diesel engine - spending ££££ on the wrong things = happens

invest in a "DICE" unit and use "VIDA" on a laptop


https://www.volvoforums.org.uk/showthread.php?t=310928

https://www.volvoforums.org.uk/showt...highlight=vida

Thanks for the links.
The garage I've been using since February 2022 is an independent Volvo specialist, with a professional code reader.

[iainmd]

If you've replaced the EGR valve and you're still getting EGR related errors then something's not right.

a) was it a genuine EGR valve? Many have had bad results with aftermarket ones including me.

b) did you calibrate the new EGR valve using VIDA? If not, you need to.

Also, I know plenty of garages with expensive "professional" code readers but sadly none will do all that VIDA does. It's designed to work with your car. My first stop in all the above would be to ensure a genuine Volvo EGR valve and calibrate it using Volvo's VIDA software. Nothing else.

Iain

[jpb1]

Thanks.

I am 99% sure the garage I'm using, uses a VIDA code reader, but I'll confirm.
Regarding whether the EGR is a genuine Volvo part, I will also check.

The garage is liaising with Volvo technical, who believe it may be software related too. They have offered to take another look free of charge in a couple of weeks, so I'll keep you posted.