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2006 V70 R AWD auto; PO420

Help, Advice, Owners' Discussion and DIY Tutorials on Volvo's stylish, distinctive P2 platform cars sold as model years 2001-2007 (North American market year designations).

2001 - 2007 V70
2001 - 2004 V70 XC (Cross Country)
2004 - 2007 XC70 (Cross Country)
2001 - 2009 S60
2003 - 2007 S60 R
2004 - 2007 V70 R
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E Showell
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Year and Model: ‘07 S80 3.2
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2006 V70 R AWD auto; PO420

Post by E Showell »

Getting a catalyst efficiency code - PO420. Dumped a bottle of Cataclean in the tank. Any suggestions if that doesn't clear it up?
'98 V70 NA FWD 5 spd, silver sand metallic (sold)
'99 V70 NA FWD Auto, dark blue (sold)
'99 S70 NA FWD Auto, black (sold and resurrected -- Don't cry for me Argentina . . . )
'07 S80 3.2 FWD Auto, Barents Blue Metallic
'06 V70 R AWD Auto, Sonic Blue Metallic (sold)
'04 XC70 Ruby Red Metallic (sold)
'95 855 auto (sold)
'86 245 manual (sold)
'05 V70 T5 M (totalled)
'06 V70 FWD Auto (totalled)
'02 Honda Insight CVT
‘04 Honda Insight CVT — “Yesterday’s car of tomorrow” (sold)
‘06 Honda Insight CVT
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- Pete -
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Joined: 6 December 2013
Year and Model: 01, 04, 04, 04 V70's
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Post by - Pete - »

Is your downpipe stock or aftermarket?

I get that code on my aftermarket DP’s if I don’t use an O2 defouler/spacer. You may need to use an angled one on the stock DP.

Install defouler, clear 0402 & forget about it.


Edit: You will probably also want to get the short O2 socket from HF.

https://www.harborfreight.com/3-8-eight ... 97177.html

Defouler (example):

https://www.ebay.com/itm/392915239526
2001 V70XC 200k
2004 V70 AWD 174k
2004 V70R M66 147k
2004 XC70 361k
1995 F250 7.3PSD 262k
2014 Ram 3500 DRW 116k
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User avatar
E Showell
Posts: 3275
Joined: 16 October 2008
Year and Model: ‘07 S80 3.2
Location: Long Valley, N.J.
Has thanked: 37 times
Been thanked: 111 times

Post by E Showell »

Stock downpipe.
'98 V70 NA FWD 5 spd, silver sand metallic (sold)
'99 V70 NA FWD Auto, dark blue (sold)
'99 S70 NA FWD Auto, black (sold and resurrected -- Don't cry for me Argentina . . . )
'07 S80 3.2 FWD Auto, Barents Blue Metallic
'06 V70 R AWD Auto, Sonic Blue Metallic (sold)
'04 XC70 Ruby Red Metallic (sold)
'95 855 auto (sold)
'86 245 manual (sold)
'05 V70 T5 M (totalled)
'06 V70 FWD Auto (totalled)
'02 Honda Insight CVT
‘04 Honda Insight CVT — “Yesterday’s car of tomorrow” (sold)
‘06 Honda Insight CVT
Top
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