Go Back   986 Forum - for Porsche Boxster & Cayman Owners > Porsche Boxster & Cayman Forums > Performance and Technical chat

LinkBack Thread Tools Display Modes
Old 04-02-2010, 09:33 AM   #1
Registered User
Join Date: Aug 2008
Location: Deroche,b.c.
Posts: 1
code PO131

1998 Boxster, check engine light on constantly, code- PO131, precatalalyst oxygen sensor, cyl 1-3 Best way to deal with this?
ralph1 is offline   Reply With Quote
Old 04-04-2010, 06:49 PM   #2
Porsche Purist
Paul's Avatar
Join Date: Aug 2003
Location: Wisconsin
Posts: 2,033
Can be:

bad wiring between O2 sensor and the DME

bad sensor

bad DME.

Check the connector at the sensor and the wiring.

Swap the sensor with the one on the other side to see if the problem moves.

If it does, replace the sensor.
1998 Boxster with 7.8 DME, 2005 3.6 liter/325 hp, Variocam Plus, 996 Instrument panel
2001 Boxster bought new. Another motor installed at 89k.
1987 924S 2002 996TT PST2
Owned and repaired Porsches since 1974. Have driven them all the way the Dr intended...
Paul is offline   Reply With Quote

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On

All times are GMT -8. The time now is 02:59 AM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO 3.6.0
Copyright 2018 Pelican Parts, LLC - Posts may be archived for display on the Pelican Parts Website -    DMCA Registered Agent Contact Page