Question about 1997 Volvo 850

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Have codes po410, po442, po455, po133 - 1997 Volvo 850

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Check for air/vacuum leaks

Posted on Jun 04, 2010

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What are the problems when it had diganostic codes of po 496 po 455 po442 and po121


po121 is throttle position sensor is out of range.po442 is emissions system leak detected small leak.po455 is same as po442 but large leak.po496 is high purge flow . Check all the vacuum lines plastic also cause one of them is broken.

Dec 08, 2017 | Cars & Trucks

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What do I when my 98 volvo s70 2.4L engine has trouble codes po133 & po442?


Po133 is and oxygen sensor code. Replace the front oxygen sensor use a bosch or OE sensor only. P0442 is and evap system leak. Most common fault is a cracked hose at the evap cannister at the right rear of the car.

Mar 19, 2015 | 1998 Volvo S70

1 Answer

Codes0441 0442 0455 0456


codes po441 po442 po455 po456. code po441 - EVAP system no flow during purge conditions.code po442 -EVAP system small leak detected conditions. code po455 - EVAP system large leak detected conditions.code po456 - EVAP system very small leak detected. possible causes loose damaged missing fuel cap.fuel tank sensor disconnected or failed. ORING on top fuel sending unit leaking.purge valve vapor line clogged disconnected or purge solenoid failed.vent solenoid not closing or has failed.

May 23, 2013 | 2002 Dodge Durango

1 Answer

Engine light on. Codes PO455 and PO442?


There is a pretty good emissions leak somewhere.

Apr 14, 2010 | 2000 Jeep Grand Cherokee

1 Answer

Ford trouble codes po442.......po455.where to look for problem. have repacedgas cap.


EVAP Codes. You will have to go thru entire evap system,looking for a small leak (po442) Hoses,Switches,Valves etc. See if you can borrow a smoke machine.

Mar 16, 2010 | 2004 Ford Explorer Sport Trac

1 Answer

Failed Emision test


po442 is evap emission control system leak (small) 1 of the lines for emissions is leaking. po455 is-- emission control system leak (large). turn off light with code scanner after it is fixed.

Sep 01, 2009 | 2001 Dodge Caravan

2 Answers

Code PO442 & PO455 on a 2003 Dodge Caravan with 3.3 engine


The problem is most likely to be with your vacuum line they put cheap rubber hose for this purpose. You should find a diagram at the front of the vehicle trace the hoses by this diagram. You most likely will find a bad piece of hose.

Mar 14, 2009 | 2003 Dodge Caravan

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