o2 sensors and temp switch location
AudiWorld Super User
Joined: Jul 2001
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From: Wilbur by the Sea
Here's a few
I think in the procedure below, these are all post cat O2 sensors....in the states we all got four, two before and two after the cat.
I believe the pre cat 02 sensors are on the header pipe that comes down from the block, not shown.
Temperature switch? You mean to pre heat them? I imagine it just blasts it with current for a pre determined time, but not sure.<ul><li><a href="http://www.audipages.com/Tech_Articles/auto_transmission/transealreplacement.html">See post cat pictures here</a></li></ul>
I believe the pre cat 02 sensors are on the header pipe that comes down from the block, not shown.
Temperature switch? You mean to pre heat them? I imagine it just blasts it with current for a pre determined time, but not sure.<ul><li><a href="http://www.audipages.com/Tech_Articles/auto_transmission/transealreplacement.html">See post cat pictures here</a></li></ul>
Thread Starter
AudiWorld Super User
Joined: Sep 2005
Posts: 2,666
Likes: 1
Thanks Paul
it is the engine coolant temp sender switch that apparently tells the ecu that the engine is warm.
The code says sporadic fault and the o2 sensors are also throwing up faults.
Can these be related?
Right bank probe says sporadic fault and left said electical curcuit fault[may be loose wire?]
The code says sporadic fault and the o2 sensors are also throwing up faults.
Can these be related?
Right bank probe says sporadic fault and left said electical curcuit fault[may be loose wire?]
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