Reader show me a code P2270 im trying to find out what that for

you can find the answer by googling your question. All OBD2 codes are listed.
About 41,700 results (0.53 seconds)
https://www.obd-codes.com/p2270
https://www.yourmechanic.com/article/p2270-obd-ii-trouble-code-o2-sensor-signal-stuck-lean-bank-1-sensor-2-by-jay-safford

http://www.obd-codes.com/p2270


http://www.obd-codes.com/p2197

This P2270 trouble code refers to the post-catalytic converter O2 (oxygen) sensor on bank #1, sensor #2.

Check this site:
P2270 O2 Sensor Signal Stuck Lean B1S2

P2270 O2 Sensor Signal Stuck Lean B1S2

Bank 1 Sensor 2 signal is indicating a lean condition, replace the O2 sensor. Right side (passenger) after the Cat.

What does it say for that code? What sensor was replaced? Still showing what?

Use Google to look up the code

2009 Pontiac OBD Code P2270

0135 is 02 sensor bank 1 sensor 1
1017 , 2270 , 1081 , 1054
all these codes should all start with 0??? you should look at the ABS
system for the rest of your codes

Is the wiring good going to the O2 sensors? Maybe just look the car over and see if you have any bad grounds. They can do weird things. Could be a bad ICU.

DTC P2270: Rear Secondary HO2S (Bank 1, Sensor 2) Circuit Signal Stuck Lean

Is this the only code that is coming up? If so, replacing the Bank 1 Sensor 2 Oxygen sensor should fix it. If there are any other engine/drivetrain/emissions related codes, I would recommend ignoring this code for now and fix the other things first, then retest the vehicle to see if this code comes back.

For more information about locating oxygen sensors and repairing oxygen sensor codes, please review the following article:

Which Oxygen Sensor Is It?

What Else Could Be Wrong?

According to my book, it looks like a bad O2 sensor, the sensor behind the catalytic converter on the passenger side exhaust.

Bank 1, Sensor 2.

You can pick one up at the parts store for around $75.