P0420 CEL code for 98 ES300 need ohms.
10-04-13, 04:09 PM
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P0420 CEL code for 98 ES300 need ohms.
My 1998 Lexus ES300 has 158K miles and is throwing a P0420 CEL code.
I just replaced the Bank 1 upstream sensor last week.
The flex pipe which includes the cat was replaced 6 months ago.
So I believe that leaves the bank 2 upstream O2 sensor and the downstream O2 sensor to be checked.
Does anyone think measuring the resistance will tell me whether the O2 sensors are bad or not?
If so does anyone know what the acceptable ohms ranges are for these sensors?
Any help is appreciated thanks.
I just replaced the Bank 1 upstream sensor last week.
The flex pipe which includes the cat was replaced 6 months ago.
So I believe that leaves the bank 2 upstream O2 sensor and the downstream O2 sensor to be checked.
Does anyone think measuring the resistance will tell me whether the O2 sensors are bad or not?
If so does anyone know what the acceptable ohms ranges are for these sensors?
Any help is appreciated thanks.
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