I have a 1994 volvo 850 turbo. I am so lost with this subject. Some people say that this car can be read by code readers and some say that it has flashing lights to read. I just want to know what the real deal is. i heard that it was OBD I and that the code readers are $400 i dont care about the price. Every code reader i look at doesnt seem to mention volvo any where. Ifi can use the flashy light thing where is it at and how do you use it. I am sick of always taking my car to the dealer and paying $800 any advice would be helpful.

Thanks,
Logan

 

On the 94 model you don´t need a code reader. You can use the flashing lights.
http://volvospeed.com/CheckEngine.php

Here are the codes:
https://volvoforums.com/m_52326/tm.htm

 

Hi Logan,

Let's start from verifying to see if your 850 has OBD-II port. If it has one, it is located in front of the shifter, right under the coin holder. See attached. If you're situated in the U.S., Actron's OBD-II scanners are able to read & reset codes on engine & tranny ECUs. They cannot access the rest of the electronic controls such as ABS/TRAC, A/C, cruise, instrument, seats, etc... Actron's CP9175 is about $140. Or you can take advantage of parts shops such as Autozone where they provide free OBD-II diagnostic service.

http://www.actron.com/product_detail.php?pid=16309
http://www.autozone.com/store_locator/home.htm

Most likely you do have OBD-II, as it is a turbo model. You can also open the hood and see pax-side strut tower; there should be a label that says "This car is certified for OBD-II blah blah".


JPN

[IMG]local://upfiles/6892/2C7B0A9AC1EF4FF1B68FBDB0557496B6.jpg[/IMG]

 

And here we go with OBD-I. They are all over the 850 forum, posted by some J@p[8D].


JPN

[IMG]local://upfiles/6892/2F91B4791ADC498EA0F9FE7224D91D6B.jpg[/IMG]

[IMG]local://upfiles/6892/C671426FC83845F4869DF3BCD957E974.jpg[/IMG]

[IMG]local://upfiles/6892/7057F721D6D84A90865E80F5CB7760C6.jpg[/IMG]

[IMG]local://upfiles/6892/4AD7730C3EE84C81A1C01B9BD3BD69BE.jpg[/IMG]

 

These are a courtesy of volvospeed.com.

The following thread may be of some use:

https://volvoforums.com/m_48928/tm.htm


JPN

[IMG]local://upfiles/6892/FF66CA6BB63C4DACB0A00834B893DD5C.jpg[/IMG]

[IMG]local://upfiles/6892/372B07116A534008839FD9B5B008899C.jpg[/IMG]

 

JPN covered it better t han I ever could have. I just want to add that our 95 has both the modules with the lights under the hood and the OBD II port under the coin holder. I have been lucky enough to use both whenever we have issues. SO if you have the port in yours, you can use both methods as well.

Glenn

 

Hey now,

Here's a pic from the manual.

The unit is located in position #1.

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[IMG]local://upfiles/14053/2DF267972DA94C76B84734106CD67331.jpg[/IMG]

 

Ok thanks everyone for the help. The problem i am having with my car is i pulled it in the garage the other night, i go out to start it the next day and it just turns over and over and over. When i took the codes i got a bunch of useless information. my A6 which is the ignition gave me no readings was the only one to do nothing. checked the voltage and was getting 10 volts. i cleared all the other ports, and tryed to start my engine hoping for somemore codes got nothing. i am figuring that it may be the fuel pump but i dont know? its wierd that i got nothing from the ignition system. but i was wondering if i got a OBD II because i do have the port, if it would be able to return a ignition system code from there.

Thanks Logan

 

10V sounds like a terribly low voltage. Are you sure your battery isn´t dead after so much cranking? Check the voltage at the battery with a multimeter when you turn the ignition key. What´s the lowest voltage you see?

Regarding the fuel pump you can check the fuel pump relay. The pump itself might be dead too. There are some threads on how to check for that. I think it implied tapping the fuel tank to get the pump to move a bit in case it´s stuck, but I am not sure.