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P0443 but I've replaced everything - 2000 S70 AWD

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AustinAbney
Posts: 4
Joined: 28 Apr 2019, 10:14
Year and Model: 2000 S70 awd
Location: Raleigh, NC

Post by AustinAbney »

Keep getting the P0443 code which is leaving me unable to renew my tag. So far, I’ve replaced the following:

1. Purge valve (twice)
2. Fuel shutoff valve (twice)
3. Hose from the purge valve that “y’s” out to the intake manifold and engine intake hose
4. J-pipe

Any other ideas?
Last edited by matthew1 on 28 Apr 2019, 17:45, edited 3 times in total.
Reason: fixed title
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misha  
Posts: 5437
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Year and Model: 2010 Volvo S80 D5
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Post by misha »

You are on the wrong path:
https://www.google.com/amp/s/repairpal. ... it-low.amp
2010 S80 D5 / restyling / fully equipped / Twin turbo / Savile Gray Metallic (492)

History of Volvos in the family:
'71 144 S
'73 144 De Luxe
'78 244 DL
'78 244 DL
'79 244 GLE
'85 340 GLS
'97 850 2.5 20v / fully equipped / Motronic 4.4 from the factory / upgraded with S,V,C,XC70 instrument cluster / polar white wagon
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AustinAbney
Posts: 4
Joined: 28 Apr 2019, 10:14
Year and Model: 2000 S70 awd
Location: Raleigh, NC

Post by AustinAbney »

My bad. I was multitasking when I made this post. I'll adjust the content and title.

I have a code P0443, not P0043. Doh!

Now, any ideas anyone?
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RickHaleParker
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Post by RickHaleParker »

You got a open, short or a power supply failure in the loom to the Purge Valve.

1. Check/clean the connector to the Purge Valve.
2. Make sure the Purge Valve is getting power.
3. Ohm out the loom for shorts and opens.
Last edited by RickHaleParker on 28 Apr 2019, 17:41, edited 1 time in total.
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1998 C70, B5234T3, 16T, AW50-42, Bosch Motronic 4.4, Special Edition package.
2017 Ford PIU. 3.5l, Twin Turbo, 365 Hp.
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Past
2003 S40, B4204T3, 14T twin scroll AW55-50/51SN, Siemens EMS 2000. ( Killed by a plastic radiator. )
2004 S60R, B8444S TF80 AWD. Yamaha V8 conversion ( I moved, the project did not )
2005 XC90 T6 Executive, B6294T, 4T65 AWD, Bosch Motronic 7.0. ( Transmission dead after sitting for a winter )
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AustinAbney
Posts: 4
Joined: 28 Apr 2019, 10:14
Year and Model: 2000 S70 awd
Location: Raleigh, NC

Post by AustinAbney »

I'll get looking. Any chance the B+ cable from the battery could have anything to do with this?
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rmd62163
Posts: 4
Joined: 31 Oct 2013, 05:37
Year and Model: 2000 S70
Location: PA

Post by rmd62163 »

I know it's late to the party. But I had the same deal changed out all the culprits only to realize it was a blown 20amp fuse. Now that's a DOH! moment! :oops:

Well, 3 miles down the road and it's back (P0443). So now I'm going to see where the short is occurring. Start with the CVVT that I changed out, reverse the wiring perhaps. That is when this all started. Fingers crossed.

Nope wasn't that!

Couldn't find any shorts. But when I swapped the wires on the CVVT , ran like crap. so they were correct. And when I swapped them back the fuse blew. So i then decided to put the original CVVT back on and low and behold runs with no fuse blown out. OK is the new Solenoid bad. Anyone know the resistance for one of these things? I get around 4 ohms. I'll haft to search around and see if I can find it. Can't return it cause I ordered it last year damn it.
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