IPD sale XeMODeX - Experts in Volvo Electronics Free shipping all USA - Experts in Brakes
Did you know? 🤔
Logged in users can get email notification of topic replies Log in or register (free).
Amazon Link Buy your stuff using this and it helps MVS!

P0422 - Is it a fake code Topic is solved

Help, Advice, Owners' Discussion and DIY Tutorials on Volvo's stylish, distinctive "P2" platform cars.

2001 - 2007 V70
2004 - 2007 V70 R
2001 - 2007 XC-70
2001 - 2009 S60
2003 - 2007 S60 R

xHeart
Posts: 2580
Joined: Sat Dec 03, 2011 8:05 am
Year and Model: 13XC90/01V70X/97N854
Location: Great Lakes - USA
Has thanked: 18 times
Been thanked: 33 times
United States of America
xHeart

P0422 - Is it a fake code

Post by xHeart » Thu Dec 06, 2018 12:21 pm

There aren't many references, not discussed often:
https://www.matthewsvolvosite.com/volvo ... ewer-codes
--
Golden Retriever | 2014D VIDA DiCE | 2013A XC90 +144mi/231km | 2001 V70XC 1st Owner +196mi/ +315km | 1997 Volvo 850 NA 1st Owner +180mi/ +289km
Past: German Shepherd | 1989 Volvo 740 GL | 1979 Volvo 240

User avatar
RickHaleParker
Posts: 3577
Joined: Mon May 25, 2015 2:30 pm
Year and Model: See Signature below.
Location: Kansas
Has thanked: 3 times
Been thanked: 434 times
United States of America
RickHaleParker

Re: P0422 - Is it a fake code

Post by RickHaleParker » Thu Dec 06, 2018 4:57 pm

P0422 = Three-way catalytic converter (TWC) efficiency.

On a 1997 850 with M 4.4, P0422 = EFI-443.

Diagnostic trouble code (DTC) information EFI-443
EFI-443 Three-way catalytic converter (TWC) efficiency

A2301062 Condition
The engine control module (ECM) continuously monitors three-way catalytic converter (TWC) efficiency by comparing the signal from the rear heated oxygen sensor (HO2S) with the signal from the front heated oxygen sensor (HO2S). When three-way catalytic converter (TWC) efficiency deviates too much the engine control module (ECM) stores diagnostic trouble code (DTC) EFI-443.

Substitute value
none.

Possible source
  • uneven compression
    air leakage in the intake system
    air leakage in the exhaust system
    faulty fuel pressure
    defective three-way catalytic converter (TWC).
Fault symptoms
may result in poor performance.
Platform: P80 1998 C70, B5234T3, 16T, AW50-42, Bosch Motronic 4.4, Special Edition package, Plant: Uddevalla Sweden.

Platform: X40 (Nedcar) 2003 S40, B4204T3, 14T twin scroll AW55-50/51SN, Siemens EMS 2000. Plant: Born Netherlands.

Platform P2 2005 XC90 T6 Executive, B6294T, 4T65 AWD, Bosch Motronic 7.0,
Plant Torslanda Sweden.
----------------------------------------------------------------
1997 S90, B6304S, AW30-42, Bosch Motronic 4.4 - Sold

xHeart
Posts: 2580
Joined: Sat Dec 03, 2011 8:05 am
Year and Model: 13XC90/01V70X/97N854
Location: Great Lakes - USA
Has thanked: 18 times
Been thanked: 33 times
United States of America
xHeart

Re: P0422 - Is it a fake code  Topic is solved

Post by xHeart » Fri Dec 07, 2018 11:08 am

Thank you for the details.
The CEL is on our 2001 V70XC - ME7.

After reading your notes, my VIDA Search for P0422 returned it with corresponding ECM 4801: Permanent Fault.

The instructions for diagnose and check appeared confusing. Example: air leakage in the intake system - It says to remove Fresh Air Intake pipe from MAF and then connect tool xyz (Mityvac) to Fresh Air Intake pipe.

The item #9 is from MAF to turbo?
Image


FWIW - disconnected vac tube from purge valve to intake port . Tested purge valve for vacuum leak. It passed, i.e. closed, holds vacuum.

The vac tube (the tube on right connects to port on purge valve & bottom tube goes to intake):
Image
--
Golden Retriever | 2014D VIDA DiCE | 2013A XC90 +144mi/231km | 2001 V70XC 1st Owner +196mi/ +315km | 1997 Volvo 850 NA 1st Owner +180mi/ +289km
Past: German Shepherd | 1989 Volvo 740 GL | 1979 Volvo 240

xHeart
Posts: 2580
Joined: Sat Dec 03, 2011 8:05 am
Year and Model: 13XC90/01V70X/97N854
Location: Great Lakes - USA
Has thanked: 18 times
Been thanked: 33 times
United States of America
xHeart

Re: P0422 - Is it a fake code

Post by xHeart » Wed Aug 07, 2019 2:18 pm

The code P0422 returns intermittently.
The CEL goes away when ambient is above 90ºF, like today. What sensor to dust-off, clean?

Last month, it passed emission with a gentle reminder from the inspector to have it looked for code P0422.
--
Golden Retriever | 2014D VIDA DiCE | 2013A XC90 +144mi/231km | 2001 V70XC 1st Owner +196mi/ +315km | 1997 Volvo 850 NA 1st Owner +180mi/ +289km
Past: German Shepherd | 1989 Volvo 740 GL | 1979 Volvo 240

User avatar
abscate
MVS Moderator
Posts: 19995
Joined: Sun Feb 17, 2013 5:54 pm
Year and Model: 99T5 ,99S70,2005V70
Location: NYC, ALBANY NY
Has thanked: 272 times
Been thanked: 849 times
Trinidad & Tobago
abscate

Re: P0422 - Is it a fake code

Post by abscate » Thu Aug 08, 2019 3:10 am

Next year it might do the same. That same vacuum line system self destructed on my car a couple years back. You could try a smoke test for induction leaks
Empty Nester
A Captain in a Sea of Estrogen
1999-V70-T5M56 2005-V70-M56 1999-S70 VW T4 BMW
Link to Maintenance record thread
Link To Volvo Glossary

xHeart
Posts: 2580
Joined: Sat Dec 03, 2011 8:05 am
Year and Model: 13XC90/01V70X/97N854
Location: Great Lakes - USA
Has thanked: 18 times
Been thanked: 33 times
United States of America
xHeart

Re: P0422 - Is it a fake code

Post by xHeart » Sun Sep 15, 2019 6:29 pm

abscate wrote:
Thu Aug 08, 2019 3:10 am
Next year it might do the same. That same vacuum line system self destructed on my car a couple years back. You could try a smoke test for induction leaks
Few warm days and the CEL for P0422 disappeared. The CEL returned today when ambient temp dropped below 77ºF. I can forecast CEL.
I'll plug in VIDA to narrow down location for this vacuum leak, if you say.
--
Golden Retriever | 2014D VIDA DiCE | 2013A XC90 +144mi/231km | 2001 V70XC 1st Owner +196mi/ +315km | 1997 Volvo 850 NA 1st Owner +180mi/ +289km
Past: German Shepherd | 1989 Volvo 740 GL | 1979 Volvo 240

User avatar
RickHaleParker
Posts: 3577
Joined: Mon May 25, 2015 2:30 pm
Year and Model: See Signature below.
Location: Kansas
Has thanked: 3 times
Been thanked: 434 times
United States of America
RickHaleParker

Re: P0422 - Is it a fake code

Post by RickHaleParker » Sun Sep 15, 2019 7:47 pm

xHeart wrote:
Sun Sep 15, 2019 6:29 pm
Few warm days and the CEL for P0422 disappeared. The CEL returned today when ambient temp dropped below 77ºF.
Metal contracts when cold and expands at higher temperatures.
Spray some Either around the intake manifold when the engine is below 77ºF see if the engine surges. Or you could do a smoke test when the engine is below 77ºF.
Platform: P80 1998 C70, B5234T3, 16T, AW50-42, Bosch Motronic 4.4, Special Edition package, Plant: Uddevalla Sweden.

Platform: X40 (Nedcar) 2003 S40, B4204T3, 14T twin scroll AW55-50/51SN, Siemens EMS 2000. Plant: Born Netherlands.

Platform P2 2005 XC90 T6 Executive, B6294T, 4T65 AWD, Bosch Motronic 7.0,
Plant Torslanda Sweden.
----------------------------------------------------------------
1997 S90, B6304S, AW30-42, Bosch Motronic 4.4 - Sold

xHeart
Posts: 2580
Joined: Sat Dec 03, 2011 8:05 am
Year and Model: 13XC90/01V70X/97N854
Location: Great Lakes - USA
Has thanked: 18 times
Been thanked: 33 times
United States of America
xHeart

Re: P0422 - Is it a fake code

Post by xHeart » Tue Sep 17, 2019 7:59 am

RickHaleParker wrote:
Sun Sep 15, 2019 7:47 pm
xHeart wrote:
Sun Sep 15, 2019 6:29 pm
Few warm days and the CEL for P0422 disappeared. The CEL returned today when ambient temp dropped below 77ºF.
Metal contracts when cold and expands at higher temperatures.
Spray some Either around the intake manifold when the engine is below 77ºF see if the engine surges. Or you could do a smoke test when the engine is below 77ºF.
I'll check it.
FWIW, the intake was taken off during a PCV project, more here viewtopic.php?f=9&t=61449. Then reassembled back with Volvo gasket and new screws.
--
Golden Retriever | 2014D VIDA DiCE | 2013A XC90 +144mi/231km | 2001 V70XC 1st Owner +196mi/ +315km | 1997 Volvo 850 NA 1st Owner +180mi/ +289km
Past: German Shepherd | 1989 Volvo 740 GL | 1979 Volvo 240

Post Reply
  • Similar Topics
    Replies
    Views
    Last post