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a1 & a3 codes

Help, Advice and DIY Tutorials on Volvo's P80 platform cars -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.

1992 - 1997 850, including 850 R, 850 T-5R, 850 T-5, 850 GLT
1997 - 2000 S70, S70 AWD
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
1997 - 2004 C70

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lennyB

a1 & a3 codes

Post by lennyB »

my tranny is in limp mode (i think..seems to be stuck in 3rd gear). Anyhow, I thought it was the pnp, but I'm not getting a 313 code from A1. Instead, I'm getting the following codes: A1:332, 222, 235 and in A3: 141 and 444. As far as I know, it points to the solenoid S2. Does anyone have any suggestions as to whether or not I should also change the pnp, and can anyone explain or refer me to the procedures involved in swapping the S2 solenoid?

thanx

lennyb

Post by lennyb »

Any help on the solenoid s2?...please

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matthew1
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Post by matthew1 »

generic code
P0332
Knock Sensor 2 Circuit Low Input (Bank 2)

volvo specific
2-2-2 Main relay signal absent or faulty

P0235
Turbocharger Boost Sensor A Circuit Malfunction

generic code
P0141
O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 2)

generic code
P0444
Evaporative Emission Control System Purge Control Valve Circuit Open

volvo specific
4-4-4 Acceleration sensor signal

from a search on Google:
Re: Lock Out Solenoid in Transmission[ALL/1998] posted by abe crombie on
Saturday, 7 June 1997, at 1:44 p.m.

There are four solenoids in that gearbox. Two of which are called S1 and S2 and they control which gear the trans is in by applying fluid pressure to other control valves in the valve body. There is another valve used to regulate fluid pressure that is applied to clutches and brakes that are used for changing between the gears. the fluid pressure is increased for hard throttle shifts and lessened for light throttle shifts. The last one is the locking torque converter solenoid that controls whether the converter clutch (internal part of the torque converter used to override the normal fluid coupling link between engine and input shaft to gearbox to improve fuel milage and decrease ATF temp) is engaged or not. Normally the locking solenoid (SL in VOLVO terminology) is only applied in 3rd and 4th gears. If SL were sticking it is conceivable that you could have symptoms like those you describe.
Extremely informative 850 transmission page:
http://www.babcox.com/editorial/ic/ic40238.htm

Sorry, I can't tie all this together -- I've never had to do the pnp or any transmission work outside of replacing the fluid. Hopefully you'll be able to make some progress out of this info.[/quote]

95autoturbo
Posts: 73
Joined: 15 May 2005
Year and Model:
Location: ST Charles MO

Post by 95autoturbo »

P0444
Evaporative Emission Control System Purge Control Valve Circuit Open



Who knows how to correct this?
yes......It is an 850!

White850Turbo
Posts: 923
Joined: 11 April 2004
Year and Model:
Location: Plano, TX

Post by White850Turbo »

95autoturbo wrote:P0444
Evaporative Emission Control System Purge Control Valve Circuit Open



Who knows how to correct this?
https://www.matthewsvolvosite.com/chat/p ... ght=#11420 <-- My post in this thread explains how to fix that issue.
-Sean

1995 850 Turbo (Extensively Modded)

1998 S70 T5 (Almost Stock)

95autoturbo
Posts: 73
Joined: 15 May 2005
Year and Model:
Location: ST Charles MO

Post by 95autoturbo »

yep........good one, I checked the price it is $75 dollars for a turbo one.

I wonder if this part could be tweeked?
yes......It is an 850!

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