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!

Replacing up& down02 sensors, coil packs

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

Posts: 1
Joined: Wed Feb 05, 2020 3:58 am
Year and Model: 2001 v70
Location: Taberg, NY
Has thanked: 0
Been thanked: 0
United States of America

Replacing up& down02 sensors, coil packs

Post by beldon42 » Wed Feb 05, 2020 4:04 am

Currently my volvo v70 will not pass NY State Inspection. Hesitates on start-up. A general mechanic told me to replace both upstream and downstream 02 sensors and coil packs. Any suggestions or advice on this? I am new to volvo.


User avatar
MVS Moderator
Posts: 20028
Joined: Sun Feb 17, 2013 5:54 pm
Year and Model: 99T5 ,99S70,2005V70
Location: NYC, ALBANY NY
Has thanked: 273 times
Been thanked: 851 times
Trinidad & Tobago

Re: Replacing up& down02 sensors, coil packs

Post by abscate » Wed Feb 05, 2020 5:01 am

I’ve actually driven through Taberg, albeit I was lost, testing the theory that do all roads indeed lead to a Rome.


You are probably failing inspection due the presence of engine codes, stored in your engine computer, or ECM.

You need to read those codes and get the. Actual numbers like Pxxxx.

Most trouble codes are caused by vacuum leaks and broken hoses, occasionally plugs and coils go bad in these cars too. Hold off on oxygen sensors for now
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

User avatar
Posts: 4612
Joined: Fri May 24, 2013 6:20 am
Year and Model: S60 2003
Location: Canada
Has thanked: 92 times
Been thanked: 233 times

Re: Replacing up& down02 sensors, coil packs

Post by oragex » Wed Feb 05, 2020 5:04 am

How many miles ? Turbo? You only need to replace the upstream O2 for the emissions, but some mechanics are too quick to give simple answers. Can be other things other than a front O2 sensor. Give us more details if you have, and try to find the culprit with certitude. As for the coils, unless you have a lot of miles, just need to replace 1 or 2 when they fail - they will give a shake or missing. Use Bosch from Fcpeuro. More important is to have the correct spark plugs of the right brand.

Post Reply
  • Similar Topics
    Last post