P0420 or P0158 & P0159
P0420 or P0158 & P0159
My 2000 GLE gives me a P0420 code unless I install an anti-fouler. If I install the anti-fouler, then I get either a P0158 or a P0159. (or both) Either way, I can't get the ready monitors set to pass NJ inspection. Any ideas? Thanks.
Have you tried replacing your rear B2/left O2 sensor?
http://engine-codes.com/p0158.html
Tech notes
Replacing the Rear Heated Oxygen Sensor Bank 2 usually takes care of the problem.
Replacing the Rear Heated Oxygen Sensor Bank 2 usually takes care of the problem.
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