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2008 XC90 3.2 P0442 & P0037

Help, Advice, Owners' Discussion and DIY Tutorials on Volvo XC90s. The XC90 proved to be very popular, and very good for Volvo's sales numbers, since its introduction in model year 2003 (North America).
MrBreeze
Posts: 14
Joined: Wed Oct 03, 2018 1:16 pm
Year and Model: 2007 Volvo S80 FWD
Location: Annapolis
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MrBreeze

2008 XC90 3.2 P0442 & P0037

Post by MrBreeze » Mon Mar 18, 2019 8:08 pm

Just picked up a nice 08 XC90 3.2 AWD with only 99K

Throwing 2 codes

P0037 HO2S Heater Control Circuit Low Bank 1 Sensor 2
P0442 Evaporative Emission system Leak detected (small leak)

Have read lots of posts on P0442, that looks like a wild goose chase, but will start with gas cap & J Hose inspections.

Will most likely just throw a new O2 sensor on to attack the P0037 code

Most of the posts I have read related to 2.5T engines, anyone with a 3.2 experience these codes?



MrBreeze
Posts: 14
Joined: Wed Oct 03, 2018 1:16 pm
Year and Model: 2007 Volvo S80 FWD
Location: Annapolis
Has thanked: 0
Been thanked: 0
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MrBreeze

Re: 2008 XC90 3.2 P0442 & P0037

Post by MrBreeze » Sat Apr 06, 2019 8:15 pm

Follow up.....

P0037 was corrected with new Densor O2 sensor, Bank 1 Sensor 2 was passenger side down flow sensor, tested old sensor no reading on the ohm meter, after replacement with new sensor code was gone.

P0442 - decided to replace J Hose since 90% of the time that is the culprit. Pulled old hose, barely a crack, not sure it was enough to trip a code, but replaced with new hose and code is gone.



MrBreeze
Posts: 14
Joined: Wed Oct 03, 2018 1:16 pm
Year and Model: 2007 Volvo S80 FWD
Location: Annapolis
Has thanked: 0
Been thanked: 0
United States of America
MrBreeze

Re: 2008 XC90 3.2 P0442 & P0037

Post by MrBreeze » Sat May 04, 2019 6:21 am

P0442 is back, seems to happen after getting gas, so will replace gas cap next, if that does not solve it, will smoke test it.



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