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codes PO136, PO137,PO455

Help, Advice, Owners' Discussion and DIY Tutorials on Volvo's stylish, distinctive "P2" cars.
2001 - 2007 V70
2004 - 2007 V70 R
2001 - 2007 XC-70
2001 - 2009 S60
2003 - 2007 S60 R
jljholmes
Posts: 8
Joined: Sun Nov 29, 2009 5:06 pm
Year and Model: 240 1990,v70 1999
Location: PA

codes PO136, PO137,PO455

Postby jljholmes » Wed Mar 24, 2010 11:31 am

Here's the story. CEL is on for about 3 months. Pulled codes PO136 and PO137. Both Bank 1, Sensor 1. SEnsor Circuit Malfunction and Sensor Circuit Low Voltage respectively. So I figured I'd wait till better weather and change the rear O2 sensor. So I did that last week and cleared the codes. After 5 minutes of driving time on comes the CEL again and now the codes are PO136 and PO455 (evaporative system large leak). Anybody know where to go from here? Any help will be really appreciated. BTW I replaced the rear O2 sensor with the original Bosch with the correct pigtail ( no cutting or crimping involved) from FCP.

JLJHolmes

jljholmes
Posts: 8
Joined: Sun Nov 29, 2009 5:06 pm
Year and Model: 240 1990,v70 1999
Location: PA

Re: codes PO136, PO137,PO455

Postby jljholmes » Wed Mar 24, 2010 11:44 am

Sorry, I just checked my invoice from FCP and the O2 sensor is a Walker. it is the only one they list for the non-turbo 1999 V-70 All the turbo models have an NSK sensor. No Bosch units insight. Do not know if this helps explain anything. Thought I better let everyone know. Thanks.

JLJHolmes

Georgeandkira
Posts: 134
Joined: Tue Apr 07, 2009 2:24 pm
Year and Model: V70, 2002
Location: Hackensack, NJ USA

Re: codes PO136, PO137,PO455

Postby Georgeandkira » Wed Mar 24, 2010 12:32 pm

Hello, Where did you look up the codes? Decoding 3 of these doesn't make me an expert but I thought "Bank 1, Sensor 1" would be the front sensor-the one upstream of the catylitic converter. Regarding the large leak: Start looking for a disconnected hose; perhaps near where you were working. Has anyone on this board used a piece of inner tube with its valve to pressurize at the filler neck and maybe hear a leak? Would the purge valve(s) let you do this? Kira

jljholmes
Posts: 8
Joined: Sun Nov 29, 2009 5:06 pm
Year and Model: 240 1990,v70 1999
Location: PA

Re: codes PO136, PO137,PO455

Postby jljholmes » Sat Mar 27, 2010 10:46 am

Boy do I feel dumb. You're right. I did say sensor #1 in my original post. That is incorrect. It was Bank 1 sensor 2 for both codes. I replaced the rear sensor only. Hope this clarifies somewhat.


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