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MAP sensor? Air pressure or other problem?!

Help, Advice, Owners' Discussion and DIY Tutorials on Volvo's stylish, distinctive P2 platform cars sold as model years 2001-2007 (North American market year designations).

2001 - 2007 V70
2001 - 2004 V70 XC (Cross Country)
2004 - 2007 XC70 (Cross Country)
2001 - 2009 S60
2003 - 2007 S60 R
2004 - 2007 V70 R

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SteveOV70
Posts: 29
Joined: 5 April 2025
Year and Model: 2004 V70
Location: New Hampshire
Has thanked: 3 times

MAP sensor? Air pressure or other problem?!

Post by SteveOV70 »

Gooood morning volvo’ers was searching forums n I couldn’t really find the newest issue in my car. So I have a 2004 V70 2.4L FWD and one day I was driving was raining heavily outside got home after driving like 60miles then a few hours later went to run an errand and boy oh boy, 6 codes, p0107,p0642,p02227,p0123,p0365,p0340.. I went to the junkyard Anter looking them up, I replaced the MAF, camshaft sensor, I did a reset on my scanner and then only had 2 of the codes show up.. this was the info first that showed up.. P02227
Barometric pressure circuit range/ performance
P0107
P0642
Sensor reference voltage “A” low
P0365
Camshaft position sensor B circuit bank 1
P0340
Camshaft Position sensor A circuit bank 1 or single sensor
P0107
MAP OR BAROMETRIC PRESSURE CIRCUIT LOW INPUT
P0642
Sensor reference voltage A circuit low
- then after I replaced those 2 parts AND replacing the MAP sensor I get this.. After code reset
P0107
Map or barometric pressure circuit low input pending
P0642
Sensor reference voltage A circuit low pending
so now I’m seriously stumped, other then I’m starting to think there’s some sort of leak in the line from the map sensor cause it’s not
Putting out enough voltage? Please help!!!! What am I missing?!

SteveOV70
Posts: 29
Joined: 5 April 2025
Year and Model: 2004 V70
Location: New Hampshire
Has thanked: 3 times

Post by SteveOV70 »

Oh! And in addition I forgot to mention. My V70 has a message on the dash that says “reduce engine performance,” and there’s also that alarm service req.” message too. When I go to start the car it just cranks and won’t start

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jonesg
Posts: 3501
Joined: 16 January 2008
Year and Model: 2004 V70
Location: Northern maine.
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Post by jonesg »

SteveOV70 wrote: 08 Jun 2025, 10:04 When I go to start the car it just cranks and won’t start
I would start with that and do a quick diagnosis, check for fuel presssure, ignition spark.
Look for huge air induction leak, any hoses you touched or possibly disturbed, go over them .

SteveOV70
Posts: 29
Joined: 5 April 2025
Year and Model: 2004 V70
Location: New Hampshire
Has thanked: 3 times

Post by SteveOV70 »

Alright thanks jonsey I’ll keep ya posted!

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