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Error Codes: p0243, p0171, and p0442

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

1992 - 1997 850, 850 R, 850 T5-R, 850 T5, 850 GLT
1997 - 2000 S70, S70 AWD
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
1997 - 2004 C70

cjbmustang
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cjbmustang

Error Codes: p0243, p0171, and p0442

Post by cjbmustang » Wed Sep 08, 2010 6:09 pm

Car is a 1998 Volvo S70 turbo

When i go to take off from a stop, occasionally the car will want to die, and the battery light will flicker on and off. The force applied to the gas pedal makes no difference, but the car will eventually get past the hiccup.

So I started off with p0442...the other 2 are new as of today. So far to try and remedy this, i have replaced the "J" shaped line and also the "L" shaped back near the canister and also the purge valve upfront on the radiator shroud. I do no see any other visible cracks. any ideas where to start next?

where the "J" line and the "L" line connect to in the rear...is that a valve? or just plastic connector? If so, what's the name of that circular looking valve next to the charcoal canister?

Thanks,

Chris

jblackburn
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Re: Error Codes: p0243, p0171, and p0442

Post by jblackburn » Wed Sep 08, 2010 6:19 pm

where the "J" line and the "L" line connect to in the rear...is that a valve? or just plastic connector? If so, what's the name of that circular looking valve next to the charcoal canister?
That's the shut-off/rollover valve. Not a too-common failure item, as it has no electrical signal to it.

I'd follow the line from the canister/fuel tank up to the front of the engine and check it for cracks along the way.

Where is your canister? It's at the front of my S70.
'98 S70 T5
2016 Chevy Cruze Premier


A learning experience is one of those things that says, "You know that thing you just did? Don't do that."

mercuic: Long live the tractor motor!

cjbmustang
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Re: Error Codes: p0243, p0171, and p0442

Post by cjbmustang » Wed Sep 08, 2010 7:18 pm

rear of the car next to the fuel filter area. i took off the plastic covering and didnt find any?

adk793
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Re: Error Codes: p0243, p0171, and p0442

Post by adk793 » Thu Sep 09, 2010 12:11 am

If i remember correctly, P0442 is the catalytic converter efficiency bellow threshold (bank 1). I had this in my 200 V70 XC. At first, when the light came on and i found what it was, i got really worried, especially that a catalytic converter for this car wouldnt be cheap and everyone said an after market wasnt any good. BUt i cleared the cod. Its showed up a week later and i still reset it. Then about 2-3 weeks went by when it showed up again, but i cleared it. Then its been over 1-2 months and i didnt have the code again. When i sold the car, it passed smog check (in california, which is always the hardest) without a problem. A way i was told to see if the Cat. Conv was really bad is if you bagnged/hit it from under the car, if u heard rattling noises or like gravel was tumbling around in there, its bad. But if it sounded solid/hollow, you are good. I wouldnt worry too much about this code.

cjbmustang
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cjbmustang

Re: Error Codes: p0243, p0171, and p0442

Post by cjbmustang » Sun Sep 12, 2010 10:51 pm

adk793 wrote:If i remember correctly, P0442 is the catalytic converter efficiency bellow threshold (bank 1). I had this in my 200 V70 XC. At first, when the light came on and i found what it was, i got really worried, especially that a catalytic converter for this car wouldnt be cheap and everyone said an after market wasnt any good. BUt i cleared the cod. Its showed up a week later and i still reset it. Then about 2-3 weeks went by when it showed up again, but i cleared it. Then its been over 1-2 months and i didnt have the code again. When i sold the car, it passed smog check (in california, which is always the hardest) without a problem. A way i was told to see if the Cat. Conv was really bad is if you bagnged/hit it from under the car, if u heard rattling noises or like gravel was tumbling around in there, its bad. But if it sounded solid/hollow, you are good. I wouldnt worry too much about this code.
p0442 is evap system small leak. this is the code i am worried about as it has been giving me issues. i can't pull out into traffic without the fear of the car stumbling over itself and almost dying then getting hit.

where is the purge solenoid located? i thought i replace it, but apparently it was the air pump solenoid

jblackburn
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Re: Error Codes: p0243, p0171, and p0442

Post by jblackburn » Sun Sep 12, 2010 11:04 pm

Left corner of the radiator.

Image
See it hiding there at the bottom left of the picture?

Disconnect the line into the intake manifold and go for a quick drive; do you still get stumbling like crazy? If that solves your problem, please reconnect the line or plug it up with something until you can get a new valve. Gas fumes from the line in a hot engine compartment are asking for disaster.
'98 S70 T5
2016 Chevy Cruze Premier


A learning experience is one of those things that says, "You know that thing you just did? Don't do that."

mercuic: Long live the tractor motor!

cjbmustang
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cjbmustang

Re: Error Codes: p0243, p0171, and p0442

Post by cjbmustang » Mon Sep 13, 2010 7:38 pm

To the left of the "T" is where I'm looking, right? I will have to investigate that. Thanks for the tip!

jblackburn
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Re: Error Codes: p0243, p0171, and p0442

Post by jblackburn » Mon Sep 13, 2010 7:51 pm

You know, as much as I use Photoshop at work, I avoid it like the plague once I get home.

Here you go, I've been meaning to put an arrow on this picture for some time now.
You do not have the required permissions to view the files attached to this post.
'98 S70 T5
2016 Chevy Cruze Premier


A learning experience is one of those things that says, "You know that thing you just did? Don't do that."

mercuic: Long live the tractor motor!

cjbmustang
Posts: 100
Joined: Fri Sep 19, 2008 8:45 am
Year and Model: 1998 Volvo S70 T5
Location: Springfield, MA
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cjbmustang

Re: Error Codes: p0243, p0171, and p0442

Post by cjbmustang » Tue Sep 14, 2010 9:56 am

thanks, going outside to check it out

cjbmustang
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Year and Model: 1998 Volvo S70 T5
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cjbmustang

Re: Error Codes: p0243, p0171, and p0442

Post by cjbmustang » Tue Sep 14, 2010 10:38 am

just changed the valve. i'll report back in a week if there's no CEL

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