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Have 3 codes going off P0101, P0326, P0420

Help, Advice, Owners' Discussion and DIY Tutorials on S40 and V40. In this forum you'll find S40/V40-specific owners asking and answering questions on maintenance, ownership, repairs, tutorials and almost every do-it-yourself thing you can do to save money owning these Volvos.

1996 - 2004 S40
1996 - 2004 V40

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simonology101
Posts: 18
Joined: 18 July 2009
Year and Model: 850 1995
Location: Dallas,Texas, USA

Have 3 codes going off P0101, P0326, P0420

Post by simonology101 »

Please help i really dont want to sell my car i love it too much. the car just stops in the middle of the road and the rpm stays below .5 when idling. has 117,xxx miles on it
2002 S40 Sold
1995 850 NA Daily Driver

igel513
Posts: 286
Joined: 27 September 2008
Year and Model: 2003 S60 T5
Location: California
Has thanked: 1 time
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Post by igel513 »

do a search on the repair data base for those codes

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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 »

P0101 is a Mass Air Flow (MAF) sensor fault. Get a can of MAF cleaner and spray the sensor as it may be dirty.

P0326 is a knock sensor fault. Check the knock sensor connector for contact resistance or oxidation.

P0420 is a catalytic converter fault which may have been triggered by one or both of the others.

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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