[deividasl]

Hi guys,

I have '19 Camaro SS 1LE MT. Recently, got fault code P015D. After checking live data, it looked that bank 2 sensor 1 reacts slower than bank 1.
I've changed that sensor, but after some time check engine appeared again with the same fault code.
Now I'm a bit confused.LTFT in bank 2 is -7%, bank 1 +0,5%. Before bank 1 was -10%. Maybe someone had similar issue? What other things could cause this situation? Cars goes very good, acceleration good. After deleted fault, it doesn't appear for few days. And I don't know if it's related, but engine is shaking a bit on idle. I've read its normal, but maybe it has some connections...
Thanks for help!

[FlukeSS]

A P015D code in a Chevy indicates a delayed O2 sensor response for Bank 2, Sensor 2. This usually means the powertrain control module (PCM) isn't receiving a normal response from the O2 sensor located downstream of the catalytic converter on the passenger side of the engine.

Common Causes:

Defective O2 Sensor:
The O2 sensor itself may be failing, contaminated, or experiencing wiring issues.

Wiring Problems:
Damaged, corroded, or poor connections in the wiring harness can hinder the sensor's signal.

Exhaust Leaks:
Leaks in the exhaust system can allow outside air to affect the O2 sensor readings.

Other Potential Issues:
Vacuum leaks, fuel injector problems, or a faulty ECM can also contribute to the code.

Just did a quick google search for this: I'm sure some of the more mechanical guys will chime in. I do know the O2 Sensor is responsible for telling the ECM to enrich or lean out the fuel mixture, so if the engine is shaking a bit it is going to be related to fuel mixture and/or timing because of the bad/poor sensor responses. Something is affecting the sensor from proper readings.

[deividasl]

So you are saying that it is not the first sensor (before cat), but the second sensor problem? Which issues would cause permanent fault? Because as I said, the fault is not permanent, it appears randomly.