wclepse

OK, a while back the wife tried to get the car inspected and they told her the readiness wasn't available. Shortly after that we got a CEL. Don't remember the codes but it was for ca inefficiency and secondary airflow. Found a loose combi valve and had the dealer fix. Two days later the CEL came back indicating cat efficiency. I tried the spark plug defouler trick since we have a HFC installed and the car drove for a few days without a CEL and when connected we got the following info.

VAG-COM Version: Release 607.3-UD

Control Module Part Number: 4B0 906 018 CH
Component and/or Version: 1.8L R4/5VT G 0001
Software Coding: 16201
Work Shop Code: WSC 63351
2 Faults Found:
17522 - Oxygen (Lambda) Sensor; B1 S2: Internal Resistance too High
P1114 - 35-00 - -
16524 - Oxygen (Lambda) Sensor B1 S2: No Activity
P0140 - 35-10 - - - Intermittent

Readiness: 0000 0000

So it was indicating readiness was OK but still had two codes with no CEL. So we cleared the codes and the next day the CEL came up. I asked the wife to run over to Advance Auto Parts to get the code read since I would have much time to do it and she got P0136 indicating that the post cat sensor had malfunctioned. Since the previous day indicated a high resistance I checked it and found it to be 12 ohms. Is there anything else I could check? I just don't want to start buying a bunch of parts hoping I finally get fixed and end up spending a fortune...any ideas?

Andy@Ross-Tech

Also, Release 607.3 is old, you should download and install Release 704.1<ul><li><a href="http://www.ross-tech.com/vag-com/download/current.html">http://www.ross-tech.com/vag-com/download/current.html</a</li></ul>

wclepse

the last time I check the resistance of the heater I had the wife flexing the wire a bit to see it it would break the continuity but nothing....so I guess I should just replce the sensor?