Volvo AWD 850 Forum

INDEX FOR 10/2025(CURRENT) INDEX FOR 2/2009 850 INDEX

[<<]  [>>]


 VIEW    REPLY TO THIS MESSAGE Replies to this message will be emailed.    PRINT   SAVE 

check engine code po422 850

posted by  KlausC on  Tue Jun 11 14:12 CST 2013
Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
last visit: Fri Oct 24 10:15 CST 2014
[RELATED]

A P0422 is an indication that the rear O2 sensor finds the exhaust dirty. If your MPG is low, suspect another vacuum leak like the hose from the air filter to the throttle body.

Because this is a replacement CAT and probably not OEM, consider getting a stand-off adapter for the rear sensor. This backs out the O2 sensor from the mainstream flow and reduces error messages, used for high flow exhaust systems.





THREADED THREADED EXPANDED FLAT PRINT ALL
MESSAGES IN THIS THREAD

New check engine code po422 [850]
posted by  REP  on Tue Jun 11 11:03 CST 2013 >


<< < > >>



©Jarrod Stenberg 1997-2022. All material except where indicated.


All participants agree to these terms.

Brickboard.com is not affiliated with nor sponsored by AB Volvo, Volvo Car Corporation, Volvo Cars of North America, Inc. or Ford Motor Company. Brickboard.com is a Volvo owner/enthusiast site, similar to a club, and does not intend to pose as an official Volvo site. The official Volvo site can be found here.