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C-70 front O2 sensor not found

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LucMan
Posts: 7
Joined: 08 Aug 2010, 09:59
Year and Model: C-70 2001, 99 S-70
Location: NY

Post by LucMan »

I have an issue with my 2001 C-70 HT coupe. The CEL came on and when I checked the code it came up as mixture to rich.
The front O2 sensor was not showing up ( NA) on the OBD software only the rear was shown.
So having close to 100K I replaced the front O2 sensor with an OEM bosch and reset the CEL.
The problem is that the front O2 sensor is still not showing up.
Any one have any ideas on what to look for?
thanks.

FCPEURO
Posts: 3002
Joined: 17 Jun 2009, 09:57
Year and Model: 2006 XC90 V8
Location: Milford, CT
Been thanked: 19 times

Post by FCPEURO »

Check the wiring to see if there is a short in it at all. Also, check the connector to see if the points are dirty. Something is keeping the signal from being read by the ECU.

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