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96 850T check engine light on but no codes

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

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greg850r
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96 850T check engine light on but no codes

Post by greg850r » Tue Jul 16, 2019 7:28 am

I thought the check engine light indicated a fault code but several attempts all result in zero codes found. Should I get a different reader? The only thing wrong with it is it's from Harbor Freight.


05 Cross Country wagon
99 C70 Convertible
96 850R wagon
96 850T wagon
96 850 GLT 5spd N/A sedan
97 850R 5spd sedan
66 GTO 421SD 4spd
67 GTO 455 T400
02 Powerstroke 4x4
85 Yota 4x4
24' 454 Challenger
07 Softail Custom
02 Sportster Custom
Parts cars not included

scot850
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Re: 96 850T check engine light on but no codes

Post by scot850 » Tue Jul 16, 2019 10:54 am

I'm not sure how well these readers read the early Volvos. As a 96 I believe it no longer has the under hood code reader. There are several items on MVS on how to build a basic code reader with cheap components using an LED bulb.

Neil.


2000 V70 R - still being an endless PITA
2006 XC70
2003 Toyota 4Runner V8 Limited
2015 Kia Sportage EX-L
1993 850 GLT -Sold
1998 V70 XC - Sold
1997 Volvo 850 SE NA - Went to niece in California - Sold
2000 V70 SE NA - New project and test bed - Sold

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abscate
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Re: 96 850T check engine light on but no codes

Post by abscate » Tue Jul 16, 2019 10:55 am

It might be a Volvo Code P1xxxx that the reader can't map. If the light is on, a code is stored.

Make sure the B+ voltage is good and tight

:D


Empty Nester
A Captain in a Sea of Estrogen
1999-V70-T5M56 2005-V70-M56 1999-S70 VW T4 BMW

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misha
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Re: 96 850T check engine light on but no codes

Post by misha » Tue Jul 16, 2019 1:30 pm

If the car have auto transmission it could be request from TCM to turn on check engine light and that can ONLY be read via special Volvo scan tool...at least VOL-FCR.


'97 850 2.5 20v /fully equipped/ Motronic 4.4 / polar white wagon
'91 Citroen XM 2.0 SI /fully equipped/mandarine red metallic
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

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Re: 96 850T check engine light on but no codes

Post by Klausc » Tue Jul 16, 2019 7:19 pm

Stop by an auto parts store and ask to use theirs. Most chains let you do it for free.


Klaus
If I had a larger garage, I could have more Volvos.

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