what does P1158 HO25 failed to switch to lean/BankB
wont pass smog due to high emissions and the check engine light wont turn off. all the censors have been changed. what is P1158 HO25 failed to switch to lean/bank b
The exhaust oxygen sensor (HO2S) of Bank B (right hand side of the engine) is giving a faulty or no signal, check the wires going to it and ensure the sensor was actually replaced.
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