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Volvo 850, transmission code 313 Topic is solved

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

Machist
Posts: 2
Joined: Thu Mar 07, 2019 12:07 am
Year and Model: 1994 850
Location: Finland
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Machist

Volvo 850, transmission code 313

Post by Machist » Thu Mar 07, 2019 12:22 am

Hi,

I change fluid to my transmission and after that my transmission goes limb mode (flashing arrow)
Fault code was 313 Gear Position Sensor Signal Incorrect.

I replace PNP sensor (I use alignment tool) and now transmission goes limb mode in P and L position.
R,N,D,3 seems to work ok and I can drive normally (If I don't use P position)

I cannot clear codes if P or L is switched on.

TCU is also replaced

Also I measure connection between PNP and TCU

PNP

Image

P = 4
R = 2
N = 2+4
D = 3+2
3 = 3+2+4
L = 3

TCU

Image

Connector “A”
P = 6
R = 4
N = 4+6
D = 4+5
3 = 4+5+6
L = 5

Connector “B”
14 ………………………….. Gear Position Sensor -> show resistance all the time.

(pictures borrowed from http://www.volvotips.com/index.php/850- ... g-diagram/)



tardcart
Posts: 410
Joined: Fri Feb 08, 2019 4:17 pm
Year and Model: 96 850t. 93 940t
Location: Pittstown Nj
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United States of America
tardcart

Re: Volvo 850, transmission code 313

Post by tardcart » Thu Mar 07, 2019 5:12 am

I cant help, but Ide like to remind people that if you drive in the limp mode you will burn up the clutches as its third gear. In the earlier cars the speed sensor malfunction would trigger limp mode (your speedometer would not be working) Since it started with the fluid change you would have to suspect one of the solenoid valves not closing despite flashing for the PNP. That may have corrected itself as they sometimes do, but now the PNP is off adjustment. Maby put the original back in exactly where it was as shown by corrosion around the hold down bolt and see what happens. another warning is not to fix more than one thing at a time on these cars as it makes diagnosis exponetially more varied.



Machist
Posts: 2
Joined: Thu Mar 07, 2019 12:07 am
Year and Model: 1994 850
Location: Finland
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Finland
Machist

Re: Volvo 850, transmission code 313  Topic is solved

Post by Machist » Mon Mar 11, 2019 1:06 pm

New PNP sensor was faulty..
Next time I buy original Volvo parts only!!



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Clemens
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Joined: Thu Sep 03, 2015 12:34 pm
Year and Model: 96 855 R + 94 855 T5
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Austria
Clemens

Re: Volvo 850, transmission code 313

Post by Clemens » Thu Mar 14, 2019 12:56 am

Machist wrote:
Mon Mar 11, 2019 1:06 pm
New PNP sensor was faulty..
Next time I buy original Volvo parts only!!
Good idea! just buy OE or OEM!


Summer: 1996 855 R
Winter: 1994 855 T5M
Donor: 1995 854 10V

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