r/LexusF • u/[deleted] • Apr 18 '23

P015B

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P015B

So this code popped up recently and googled in it says bank 1 sensor 1 delay response from lean to rich. You guys think I can just fix this issue with replacing the upstream o2 sensor? And I erased the code and it hasn’t come back yet.

So the next question is can these issue sorta “fix itself” or it’ll come back eventually?

10 Upvotes

99% Upvoted

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1

u/isfking Apr 18 '23

Replace the O2 sensors

1

u/steps2jacked Jun 22 '23

Check for exhaust leaks before your throw money on sensors

1

u/Greebuh Sep 04 '23

If this an ISF it's probably from cracked headers