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Help with Codes 143 & 414

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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sam1
Posts: 22
Joined: 2 January 2008
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Help with Codes 143 & 414

Post by sam1 »

Hi Guys,

I got codes 143 (Front Knock Sensor Signal) & 414 (Boost Pressure Regulation).


What do these mean? What do you think is wrong? What should I check?



This sucks. I just had the car fixed last week, and everything was fine. Now more codes came up!
1994 White Volvo 850 Turbo Sedan (150,000 kms)
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billofdurham
MVS Moderator
Posts: 6507
Joined: 2 February 2006
Year and Model: 855, 1995
Location: Durham, England
Been thanked: 5 times

Post by billofdurham »

If you have not already done so download the manual pinned at the top of this forum. Go to the .pdf file 'tests with codes turbo'. Page 16 describes code 1-4-3 and how to rectify it. Page 30 does the same for code 4-1-4.

Bill.
Work was good - retirement is better.

1996 850GLT 2.5 20v Estate Manual.
1995 Peugeot Boxer 2.5Tdi Autosleeper.
Previously:
1984 244DL, Manual, Beige.
1987 744GLE, Manual, Green.
1991 960 3.0 24v, Auto, Silver.
1994 940T Wentworth, Auto, Blue.
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