Lexus SC430 :: Faulty 02 Sensor Could Damage Motor?


Jul 25, 2013

I was wondering whether a faulty 02 sensor (in my case bank 1 sensor 1) is bad for the motor or not?

It is clear to me that a worn out 02 sensor can cause the following problems:

Wastes fuel

Can cause engine performance problems, such as surging and hesitating

Is the number one cause of excessive harmful exhaust emissions

Accelerates catalytic converter damage

BUT are there any other risks in case of damage on the long term?

What the ECU will do in case of a faulty 02 sensor? Will our Lexus order a rich fuel mixture to prevent heating problems or are we also running the risk of a poor mixture?

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