1995 850 sedan automatic with 186000 miles.

I have some trouble codes i could use help with.

First does anyone have info as to what all the underhood diagnosis ports on 95 and older are for, both A side and B side?
My codes are:

port A1) 3-1-3

A2)1-1-1

A3) 1-4-1 , 2-1-3 , 2-1-4 , 4-1-2 , 4-1-3 , 4-1-4 , 4-2-1 , 4-2-2

B2)1-2-2

B5)2-4-4 , 2-4-2

I have recently replaced both oxygen sensors last fall. Plugs, rotor cap and wires, New MAF, air filter, had the fuel injectors cleaned and new o-rings and seals for them all this week. The pcv system was replaced about 1 year ago.

The car seems to run very well with the most recent work but the check engine light and SRS light are both on. I tried dis-connecting the battery to reset the lights but they come right on after restarting the car every time.
I think i have made some progres but need some guidence for the rest. I think some of the brake codes may be from rust on the abs sensor magnets since my winter wheels are very rusty. (but they work)

Thanks,Bobd

B-5 is the SRS, your codes are for the driver's seat belt tensioner. Seems the wires are no longer connected or shorted.

B-2 1-2-2 will never go away, not an error.

A-1 tranny. 3-1-3 = gear position fault or PNP switch fault

A-2 Fuel injection 1-1-1 = all OK

A-3 ABS 1-4-1 faulty brake pedal sensor

2-1-3 & 2-1-4 left/right rear wheel abs sensor
4-1-2 & 4-1-3 & 4-1-4 ABS proportioning valves not working

Ususally the rear axle gets rusty and the grooves read by the abs sensors can nolonger be 'seen'. The grooves are just inboard of the rotor.

Your proportioning valves sould like tha brake fluid has never beed flushed and they are now completely blocked.

Disconnecting the battery only gets rid of the engine and tranny codes, none of the ABS or B-2 codes will go away. Please learn how to delete the codes using the black boxes. There is a section in the brickboard pull down menu for 700/900 FAQS. One of the parts is DTC info. Volvospeed also has a list of codes here : http://volvospeed.com/volvo_repairs_how_tos


Klaus
--
Always willing to listen, just not able to take direction.

thanks klaus, I thought you might be the first one to come to my aid.

A-3 ABS 1-4-1 faulty brake pedal sensor. Is this in the passenger compartment or under the hood?

A-1 tranny. 3-1-3 = gear position fault or PNP switch fault. Do i finally need to replace the p&p switch?

4-1-2 & 4-1-3 & 4-1-4 ABS proportioning valves not working. I have flushed the fluid several times and actually replaced all of the calipers across the years. I have had the car since 59,000 miles and now have 186,000 miles. Will just flushing help or do i kneed to dig deeper?

A big thank you Klaus, you have helped so many of us.
Bobd

The brake peddle sensor is under the hood, on the front side of the vacuum cannister. Easy to get to. It might just be a wiring issue.

If you have access to a pick&pull, get another ABS module and sensor. It is on the left fender. Dealer wants $2K for an ABS pump, I would hate to think what they want for a distribution module.

Until you can clear all of the ABS codes, the ABS light will stay on. The light will only go off when you drive over 20mph and the system does its diagnostic checking.

Start by cleaning the rear axles with a wire brush.

Klaus
--
Always willing to listen, just not able to take direction.