Question about 1999 Volvo S80

6 Answers

Transmission Problem On My 1999 Volvo S80 2.9 Turbo

I bought this car on Ebay two weeks ago and after only putting around 40 miles the Service Transmission Urgent light came on. I was luckey to be right in front of a transmission repair shop. The tech ran a diagnostic test and came up with two error codes one was PO756 and the other was P1618. P0756 was shift B stuck and the other was manual output. He reset it and after another 25 miles the light came on again. I brought it back and he said the transmission had to be rebuilt, for an estimated cost of 1,400. I went to another transmission garage and when I gave them the error codes they said it was the TCM module and a shift solenoid, and it would cost around 1,700. Now I have two complety different estimates for the same problem. I don't want to drive the car until I find out the problem. I called a number of Volvo dealers and they said the error codes are generic codes and volvo has their own codes. I filed a complaint through EBAY's VPP plan. My fear is that if the wrong is fixed than I am still stuck with the original problem. ANYONE please help.............

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  • 8 more comments 
  • bmasie Jul 17, 2009

    Are you 100% sure on this? I got two estimates for around 1,700 is there a cheaper solution, or a quick fix for this.

  • bmasie Jul 17, 2009

    If it is the TCM does the transmission have to be pulled?

  • bmasie Jul 17, 2009

    Now with my second expert opinion I have two different answers to the same question. Right back where I started. So I am asking for a third opinion.

  • bmasie Jul 17, 2009

    The problem I have is two fold. The first problem is that I bought this car on eaby. Now I had to file a VPP with the ebay insurance. I am being told that I should not drive or alter this car in any way until I am told to do so. The nearest Volvo dealer is around 2 hours away. Would you have waht these codes relate to Volvo codes. I am getting more confused with three different opinions. Is there a way to see how many times this code has come up?

  • bmasie Jul 17, 2009

    Thanks, That is what the VPP is supposed is suppossed to do.My worry is that the VPP only covers undisclosed issues with engines, transmissions and frame damage over 1,000. With all the information you and others supplied to me, I do think I was dooped. With all the information in your opinion will this transmission have to be pulled and opened? I'm not sure if the VPP would cover a TCM issue. The seller is trying to blame all the problems on the shipper.I'm sorry for all the questions but I am really stuck between a rock and a hard place.

  • bmasie Jul 17, 2009

    I don't doubt your experience or knowledge of Vovlo's. I just need to get all the information I can from as many experts as possible. So far all the responses are different, so of course I am just a little confused.

  • bmasie Jul 17, 2009

    I appreicate all the information so far. Please understand that I got 4 different opinions and all four are all different.

  • bmasie Jul 17, 2009

    Where is the range selector switch located? I need to know if this problem is located in the transmission itself. It has to be a transmission problem over 1,000 to repair to be covered by VPP. That is why I have to ask so many questions and I need to be sure.

  • bmasie Jul 18, 2009

    Does that mean that the two codes that came up are incorrect? P0756 shift b stuck and P1618 manual output. You think the problem is in the transmission itself?

  • bmasie Jul 18, 2009

    SO do you think this fix would be over the 1,000 price?

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6 Answers

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It is the control module (TCM)

Posted on Jul 17, 2009

  • Nate Stansfield
    Nate Stansfield Jul 17, 2009

    Either way the tranny is most likely to get pulled. Either a module or rebuild. That is the only way to go. The shops can do further testing and give an estimate in writing saying exactly what they will do and how much it costs.

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I can't solve the problem for you but in my Haynes manual code P0756 = Shift solenoid B, performance problem or stuck in Off position. Sorry nothing on the other code.Personally I would suggest calling Volvo at 1 800 458-1552 maybe your vehicles transmission had a recall or software update maybe needs to be installed. It could be something that you don't have to pay anything to get fixed. What to do have to lose. I would call them and tell them the situation and maybe they can help. Good luck, I know it's frustrating, but hang in there.

Posted on Jul 18, 2009

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  • Volvo Master
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This is what Volvo says about code P1618
You may have a faulty gear selector switch (very common) but I have gone round on that code before.I have found faulty connections in the wiring harness that took long hours to locate.You may want to bring this one in and have it checked at the dealer. Also check for alternator output, have seen allot of difficult problems go back to a overcharging alternator.

This is what Volvo says about P0756
I would first have the software in the vehicle updated to the latest software.
If that does not fix it and still trips the code, then sounds like the transmission has failed internally other then the valve mechanism. This will need to be rebuilt or replaced.
Another Volvo master tech had this to say:
Okay, well first of all, Volvo does not use "P" codes, they convert them into their own codes so I am not sure exactly which solenoid is acting up. However, it doesn't really make a difference. I see you have flushed the fluid already, which is a good place to start. If the scanner you are using can read counters (how many times the problem has occurred), that would be helpful. Generally, when a car comes into the dealership with a shift solenoid code, it is an intermittent fault. If the fluid is burnt or dirty, we start by recommending a flush and clearing the code. The strong majority of the time, that takes care of it, especially if the solenoid stuck one or two times. However, the next step is to replace the valve body assembly and solenoids. So if you have cleared the code after the flush and it has returned, this is likely your next step.
I should also mention that when the fluid is flushed, the fluid change counter in the transmission control module should be reset. The transmission uses this to adapt shift points and line pressures to correspond with fluid age. This can only be done at a Volvo dealership. If you had the fluid flushed at the dealership, they should have reset the counters. Not clearing it can cause codes to occur when a fault isn't actually present.



Volvo has there own way of doing things, it is not a good idea top have anyone but a Volvo dealer do the final diagnosis on this, they will know about any software updates fro the transmission control module, they will also have the data base that further pins down these codes and there repair cost.

Posted on Jul 17, 2009

  • 2 more comments 
  • yadayada
    yadayada Jul 17, 2009

    the problem is not the TCM (trans control module) will the shop with the lower estimate Guarantee the problem will be fixed? ask them outright, they may just be trying to get the job thinking they can hit u up for more after they get into the job, it is called "Low Balling"



    This car should go to Volvo as I said, Volvo's are kinda unique in there trouble codes, generic code readers don't always give the correct code, so at least have Volvo test it, it will be money well spent.



    It is my personnel feeling you should take the car back to the seller, he knew these problems were there, he probably already knew the cause and cost and decided to "unload" it on a poor un-suspecting buyer.

  • yadayada
    yadayada Jul 17, 2009

    I HAVE A FEELING THE TRANS WILL NEED TO BE OPENED UP AT LEAST TO TEST AND OR REPLACE A POSSIBLE DEFECTIVE SHIFT SOLENIOD, I ALSO BELIEVE THE RANGE SELECTOR SWITCH IS DEFECTIVE.

  • yadayada
    yadayada Jul 17, 2009

    I GAVE YOU THE CORRECT INFO, U CAN REJECT THE SOLUTION BUT IT IS FROM A VOLVO SOURCE THAT IS VERY RELIABLE AND I BELIEVE CORRECT, BUT DO AS U WISH.

    I HAVE 40 YEARS OF EXPERIENCE IN AUTOMOTIVE TRADE, I AM A MASTER TECHNICIAN IN ALL PHASE'S OF AUTO REPAIR, I DO KNOW WHAT I AM DOING HERE, DON'T MAKE BS SUGGESTIONS, I DEAL IN FACTS.

  • yadayada
    yadayada Jul 17, 2009

    IF U CHECK MY SCORE U WILL SEE I GET IT RIGHT ALLOT, I AM A MASTER TECH IN ELECTRONICALLY CONTROLLED TRANSMISSIONS, I HAVE 40 YEARS OF REPAIR WORK UNDER MY BELT, MY OPINION IS THE RIGHT ONE 100% WHY BECAUSE I AM VERY GOOD AT WHAT I DO. GOOD LUCK.

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Your tcm is working properly .What happens is there is a slippage ever so slightly in the transmission that the tcm has seen,and that is why the tcm is still good. I know it took 25 miles for the light to come back on that is because when they reset the computer it reset all the transmission values.And if it was a big slip it would have come on sooner So the first trans shop is right the transmission will have to come out and be inspected.The shift b lock stuck means the tcm read this problem and it is not a sift solenoid problem .I am sorry about the bad news and i hope you can get back with ebay for your money.Sincerly .Mike from z-tech transmissions

Posted on Jul 18, 2009

  • mike loshbough
    mike loshbough Jul 18, 2009

    The codes were correct, If you have a mechanical failure this will still throw codes.But the most common problem with these codes especially when it took 25 miles to set will be a mechanical slippage like worn clutches ect.Or bad spline gears!

  • mike loshbough
    mike loshbough Jul 18, 2009

    Yes at the shop i work at it would be about $1650.It all depends on were you live.:)

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Just wanted to chime in and say you can take them to small claims court if you feel they mis-represented the car. It definitely sounds like they had the error codes taken out temporarily and sold it with the knowledge that it had problems.

Hope this helps, also I think ebay has protection against this type of thing, check ebay motors' policy.

Tim

Posted on Jul 17, 2009

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Sorry to hear about your car trouble..

I beleve that "Shift B Stuck" IS a problem with the module..
The module is what tells it when to shift..

1400 is a average price on a rebuild..
I would recomend a rebuild.. That would take care of the problem and they should have a guaranty..

Perhaps consider getting one more opinion one more shop..

FYI; That car had a recall on the "Electronic Throttle Module"..
Some people crashed because of it..
If you haven't checked into that - it might be a good idea looking into that.. Find out if that care had it replaced - etc..

I hope this help ;o)

Posted on Jul 17, 2009

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