Volvo

Have Volvo questions? Ask a Volvo mechanic for answers ASAP

Ask an Expert,
Get an Answer ASAP!

Check engine light was on the code indicated the rear o2…

Customer Question
Check engine light was...

Check engine light was on the code indicated the rear o2 sensor needed replaced, replaced it then new code came up indicating front O2 sensor needed replaced. Then new code indicating catalytic converter need replaced that was done as well. So both O2 sensors replace with Volvo OEM parts and the converter replayed with magnaflow OEM type converter, the complete converter with the pipe. Check engine light is still on. All the O2 sensor conections were rechecked. Trying to figure out what the problem is

Mechanic's Assistant: Does the light stay on, or does it blink?

Stays on. after resetinging it comes back on

Mechanic's Assistant: What is the model/year of your Volvo?

2005 S40 T5 AWD

Mechanic's Assistant: Are you fixing your S40 yourself? What have you tried so far?

No My mechanic that specializes In working on BMW, Volvo and Merceders. the codes are for the exhast I purchased the O2 senors from a Volvo dearleship the converter is Magflow and is listed as OEM type. I used the cars VIN muber when I ordered the parts

Mechanic's Assistant: Anything else you want the mechanic to know before I connect you?

So, since everything in line that can be done has been, I'm wondering if the computer is the problem

Submitted: 1 month ago.Category: Volvo
Show More
Show Less
Ask Your Own Volvo Question
Answered in 1 minute by:
3/19/2018
Volvo Mechanic: Pete, Technician replied 1 month ago
Pete
Pete, Technician
Category: Volvo
Satisfied Customers: 31,790
Experience: Over 17 years diagnosing and repairing various automobiles at a dealer and independently.
Verified

Hi, my name is ***** ***** I will be happy to assist with this today.In some cases, I may need more info to assist better.I apologize for any delay.
I am here Sundays through Thursdays from around 5 am to 2 pm Mountain time.If you respond and I do not respond back right away I will do so as soon as I can.

Can you post the fault code number here that was set with this issue?

Let me know,thanks Pete.

Ask Your Own Volvo Question
Customer reply replied 1 month ago
I no longer have the codes. I do however, have the Volvo codes listing and when I looked the codes listed the first time they indicated the rear O2 Sensor required replacing, The computer was reset, Then a new set of codes came up and when I referanced those they indicated the Forward sensor needed replace. Computer was reset and new set of codes indicate catalyst used, so the converter was replaced. new codes which I have not seen yet. My mechanic thinks its a computer update requirement. FYI, I'm the original owner, the car has 127K this is the 1st time the O2 sensors and converter have been replaced,
Volvo Mechanic: Pete, Technician replied 1 month ago

O.k., depending on the code set now it is possible the engine computer has an issue internally and needs to be replaced or just needs updated programming to resolve this issue.But I have also seen issues with the wiring that runs from the sensors to the computer.I would have the oxygen sensor wiring and connections checked for any issues.If any issues are found they will need to be repaired to resolve this fault here.

If no wiring issues are found and the codes that are now set are related to the oxygen sensors again I suspect a computer fault and would see if a dealer can reprogram it to resolve this issue and if not then it may need to be replaced.

If more help is needed, use the reply tab to continue our conversation. If no further assistance is needed, kindly rate my service, your 5-star rating is appreciated ( should be a link to click on here or above).You can rate at any time and we can continue to work on your question as this will not close out your question.I work on delivering the best answer and help here but in some cases, it can be difficult to do without seeing the vehicle.

Thanks Pete

Ask Your Own Volvo Question
Was this answer helpful?
Ask Pete Your Own Question
Pete
Pete
Pete, Technician
Category: Volvo
Satisfied Customers: 31,790
31,790 Satisfied Customers
Experience: Over 17 years diagnosing and repairing various automobiles at a dealer and independently.

Pete is online now

A new question is answered every 9 seconds

How JustAnswer works:

  • Ask an ExpertExperts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional AnswerVia email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction GuaranteeRate the answer you receive.

JustAnswer in the News:

Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.

What Customers are Saying:

The nearest Volvo dealer is 160 miles away. Best $15 bucks I have spent in a long time!

Paul MCorpus Christi, TX

I would (and have) recommend your site to others I was quite satisfied with the quality of the information received, the professional with whom I interacted, and the quick response time. Thanks, and be sure that I'll be back whenever I need a question answered in a hurry.

Stephanie PElm City, NC

used your service this weekend with "Trecers" help. thank you ,thank you, thank you. replaced an A/C fan motor. Local Auto Zone had part. $15.00 "tracer" fee and $40.00 for parts, I saved several hundreds of dollers at a shop. i will recommend you and use you in the future.

David L.Richmond, TX

9 dollars, 2 hours of my time, and I drove away. Your diagnosis was right on the mark. Thank you so much.

PhilMarysville, CA

Lurch. Thank you very much. I had real doubts about this website but your promptness of response, quick followup and to the point answer with picture was incredible.

CharlesWalnut Creek, CA

As a single woman, I really appreciate an excellent and affordable opinion.
Thank you Geordie, I will not hesitate to contact justanswer in the future!

SueCharleston, WV

Another great insight to what may be the problem. I will have my mechanic take a look at it tomorrow. Thanks again, Frank...you do indeed know your stuff.

JimCastleberry, FL

< Previous | Next >

Meet the Experts:

Enes

Enes

VOLVO Master Technician

4,911 satisfied customers

18+YEARS WITH VOLVO AS THE MASTER VOLVO MECHANIC&Ase

Andy

Andy

Volvo Expert Technician

3,740 satisfied customers

One of only a handful of ACTUAL Volvo dealership technicians on JA, ASE Master Certified with L1

volvoexpert1

volvoexpert1

ASE Certified Technician

1,001 satisfied customers

Volvo Master Technician with 15 years excusively with Volvos. Also ASE L1certified for over 10 years.

dramey

dramey

ASE Certified Technician

669 satisfied customers

have worked on volvo's for 4 years and am a ase master mechanic. current shop foreman

Chris (aka-Moose)

Chris (aka-Moose)

Technician

550 satisfied customers

16 years of experience

Tim Mohr

Tim Mohr

ASE MASTER TECH

521 satisfied customers

30 YRS EXPERIENCE, FOREIGN AND DOMESTIC, GAS AND DEISEL

Jim B

Jim B

ASE Certified Technician

504 satisfied customers

40 years Import and domestic AAA Approved Shop owner 30 yrs

< Previous | Next >

Related Volvo Questions
Im replaceing a VVT exhaust sprocket on my 2004 s40 1.9
im replaceing a VVT exhaust sprocket on my 2004 s40 1.9 turbo. I cant find a timing set up for a new VVT … read more
Chad Farhat
Chad Farhat
Owner
Associate Degree
5,054 satisfied customers
Volvo S40 Year 2000 48k miles & recently serviced at 45k
Volvo S40 Year 2000 48k miles & recently serviced at 45k miles. Runs well. While driving today it started to rev very high, even though my foot wasn't pressing hard on the accelerator. D … read more
eauto
eauto
self employed
High School or GED
74 satisfied customers
I cannot get the truck to open on a 2009 S40. I am going to
I am going to try and fix it myself and have not tried anything yet. … read more
eric remington
eric remington
FORMER SHOP OWNER/TECHNICIAN/INSPECTOR
associates degree
480 satisfied customers
My 2001 Volvo s40 trunk will not stay closed. I push it down
I tried moving the lid gadget back and forth and it won't stay locked … read more
Enes
Enes
VOLVO Master Technician
Vocational, Technical or Trade Scho
4,911 satisfied customers
I'm looking for a how-to replace a volvo s40 2010 alternator
I'm looking for a how-to replace a volvo s40 2010 alternator … read more
fordguy4u
fordguy4u
Automotive Tech
Vocational, Technical or Trade Scho
70 satisfied customers
2002 Volvo S40 1.9 T where is the timing on the exhaust
2002 Volvo S40 1.9 T where is the timing mark on the exhaust camshaft vvt. I can't find it on the camshaft on that side it has moved. First time doing this type of timing belt.… read more
Enes
Enes
VOLVO Master Technician
Vocational, Technical or Trade Scho
4,911 satisfied customers
I tried to start my 2005 s40. The instrument panel lights
I tried to start my 2005 s40. The instrument panel lights up, but nothing happens. A local shop says I need to replace the Start Control Unit? … read more
Eric
Eric
Retired
N/A
14,436 satisfied customers
2007 volvo s40 with a dead battery and cant get into it.
2007 volvo s40 with a dead battery and cant get into it … read more
Frankie Pintado
Frankie Pintado
Lead Technician
Vocational, Technical or Trade School
11 satisfied customers
2007 s40 sedan with no fan. How do you replace the blower
2007 s40 sedan with no fan. How do you replace the blower fan resistor? … read more
Enes
Enes
VOLVO Master Technician
Vocational, Technical or Trade Scho
4,911 satisfied customers
I changed both belts and idler pulley on a 2008 s40 with the
Hi I changed both belts and idler pulley on a 2008 s40 with the 2.4 motor. It had a lot of noise before, as well as some belt squeak, which is the reason why I changed it. Upon changing it there is a … read more
Kevin
Kevin
workshop foreman /master tech/mot tester
1 satisfied customers
I've got a 2007 S40 and the steering is intermittently stiff
I've got a 2007 S40 and the steering is intermittently stiff and jerky. … read more
Enes
Enes
VOLVO Master Technician
Vocational, Technical or Trade Scho
4,911 satisfied customers
Everything. 2008 volvo s40. Possibly... nothing yest trying
possibly... nothing yest trying to find the problem … read more
Edward Clayton
Edward Clayton
Associate Degree
1,033 satisfied customers
Have a 2004 volvo s40 1.9L. I lost the key for it. Is it
Have a 2004 volvo s40 1.9L. I lost the key for it. Is it possible to find a key with with a matching immobilizer? Is there anything else I would need to make this work? … read more
Edward Clayton
Edward Clayton
Associate Degree
1,033 satisfied customers
2004 s40 2.5 four door. with igintion opening any of the
2004 s40 2.5 four door. with igintion opening any of the doors will make the dash gauges and dash lights flicker on and off. there is no tail running lights but they flicker on when doors open. if car… read more
Pete
Pete
Technician
31,790 satisfied customers
The engine warning light on my 2006 volvo S40 2.4i
The engine warning light on my 2006 volvo S40 2.4i geartronic came on yesterday as we started back to Nottingham from London. Car is running reasonably sweetly, its done 79,000 for me from new. Manual… read more
Matt
Matt
Engineer
Bachelor\u0027s Degree
5 satisfied customers
My 2007 Volvo s40 won�t turn over and the indicator is on
Second opinion] My 2007 Volvo s40 won�t turn over and the indicator is on and it says �steering locked� and the dstc is on. What do I do? I�m in the subway parking lot… read more
Stephen, MBA
Stephen, MBA
Master's Degree
166 satisfied customers
Key fob not wrking on my daughter's 2008 S40. Can a
Key fob not wrking on my daughter's 2008 S40. Can a mechanical key be detached from the FOB and used? … read more
Edward Clayton
Edward Clayton
Associate Degree
1,033 satisfied customers
I have an 06 S40 the flashers turn on by themselves the
I have an 06 S40 the flashers turn on by themselves the headlights work sometimes unless you hold the turn signal handle back witch deploys the high beams but has to be held that way and neither of th… read more
Mechanic01
Mechanic01
2,377 satisfied customers
Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Show MoreShow Less

Ask Your Question

x