1997 V70 downstream O2 sensor

roddi · Jul 19th, 2004, 14:11

Playing with a new Scantool I appear to have found a problem with the 02 sensor downstream of the cat. The system is going closed loop but with an O2 sensor fault. If I scan the voltage on the sensor it says it is 0 volts. If I disconnect the wiring to the sensor all the scanned data appears to be the same as with it connected! There is no lamp lit.
Am I correct that this sensor should be giving a varying voltage with smaller amplitude than the upstream one? How come no Check Engine lamp?

Many Thanks

Rod
1997 V70 20v

ShadeTek · Jul 19th, 2004, 20:08

Out of interest which Scantool did you get?

roddi · Jul 19th, 2004, 20:46

It is the ISO K-Line Interface from here:
http://diagnostix.co.uk/interfaces.html
It is supplied with the software from Scantool:
http://www.scantool.net/software/index.html
The interface should work with other software written for the ELM chip. I have not got around to trying it yet.

Regards

Rod

ShadeTek · Jul 19th, 2004, 22:08

I have the ELM based ISO reader which I ordered and built up. I also have the Alex Peper scanner and a hand held scantool too....not to mention the onboardiagnostics.co.uk ABS code puller. Unfortunately my car is not OBD compliant even though it has a socket labelled OBD2! The ABS reader works fine and helped me locate a wiring fault. Let me know how the elm based scanner performs.

Jul 19th, 2004, 14:11	#1
roddi New Member Last Online: Mar 19th, 2022 12:20 Join Date: Dec 2003 Location: Essex	1997 V70 downstream O2 sensor Playing with a new Scantool I appear to have found a problem with the 02 sensor downstream of the cat. The system is going closed loop but with an O2 sensor fault. If I scan the voltage on the sensor it says it is 0 volts. If I disconnect the wiring to the sensor all the scanned data appears to be the same as with it connected! There is no lamp lit. Am I correct that this sensor should be giving a varying voltage with smaller amplitude than the upstream one? How come no Check Engine lamp? Many Thanks Rod 1997 V70 20v

Jul 19th, 2004, 20:08	#2
ShadeTek Premier Member Last Online: Apr 20th, 2024 19:38 Join Date: Dec 2002 Location: Renfrewshire View Photos By: ShadeTek	RE: 1997 V70 downstream O2 sensor Out of interest which Scantool did you get? __________________ Tek-Emo Villis Emo Bis V70 SE NAV 1.6 D2 2015MY POWERSHIFT, D4162T, 93000miles, RED. /VOL FCR/PEPER OBD2/Acron 9135 OBD2/L.E.D Flasher/VDASH/ANCEL BA301/Topdon Top Scan

Jul 19th, 2004, 20:46	#3
roddi New Member Last Online: Mar 19th, 2022 12:20 Join Date: Dec 2003 Location: Essex	RE: 1997 V70 downstream O2 sensor It is the ISO K-Line Interface from here: http://diagnostix.co.uk/interfaces.html It is supplied with the software from Scantool: http://www.scantool.net/software/index.html The interface should work with other software written for the ELM chip. I have not got around to trying it yet. Regards Rod

Jul 19th, 2004, 22:08	#4
ShadeTek Premier Member Last Online: Apr 20th, 2024 19:38 Join Date: Dec 2002 Location: Renfrewshire View Photos By: ShadeTek	RE: 1997 V70 downstream O2 sensor I have the ELM based ISO reader which I ordered and built up. I also have the Alex Peper scanner and a hand held scantool too....not to mention the onboardiagnostics.co.uk ABS code puller. Unfortunately my car is not OBD compliant even though it has a socket labelled OBD2! The ABS reader works fine and helped me locate a wiring fault. Let me know how the elm based scanner performs. __________________ Tek-Emo Villis Emo Bis V70 SE NAV 1.6 D2 2015MY POWERSHIFT, D4162T, 93000miles, RED. /VOL FCR/PEPER OBD2/Acron 9135 OBD2/L.E.D Flasher/VDASH/ANCEL BA301/Topdon Top Scan

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)