05-01-2015, 06:05 PM #1
2002 audi a4 1.8T Pre CAT o2 sensor all white!
Anyone know why this sensor tip is covered with powder white substance?
I was getting a code and Check engine light. Reset the code and it comes back. Pics coming up
05-01-2015, 06:09 PM #2
05-01-2015, 07:27 PM #3
I guess it's normal from what I just read...
05-01-2015, 08:52 PM #4
- Join Date
- Jun 2010
- Milwaukee WI
Are you possibly burning oil or coolant?
05-02-2015, 02:28 AM #5
Coolant level hasn't changed since I replaced the Thermo sensor 6 months ago. Oil level has been good, no top offs needed.
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