OBD2 codes PO101, P1135 and PO125, how to fix?

Hello, is the engine performance low? With this code P1135 might be causing the P0125. The P1135 is for the Front AF sensor (air fuel ratio sensor) in the exhaust manifold. There are a couple different setups with these vehicles, but since this is a 4 cylinder, it will the sensor that is in the exhaust manifold that is closest to the engine. This code indicates that the heater circuit for the sensor is not functioning anymore, and the sensor cannot function without it. I'll put a diagram of where to find it. But you'll most like need to replace the Bank 1 Sensor 1 AF sensor. It looks like an Oxygen sensor, but it works differently. I have seen lean exhaust in a situation where a lean exhaust looked to have overheated the sensor and caused the sensor to fail. Do you know which sub-model this car is, XLE, or XL?
The P0101 is for the MAP sensor, which reads the amount of vacuum or lack of pressure in the Intake manifold. Now this code can be set if the vehicle is running poorly because manifold vacuum will be low on the vehicle with misfiring cylinders. So, the first thing to do is to replace the AF sensor, erase the codes and see which codes come back. Because with Toyota, once it sets a P1135 it will no longer read data from that sensor. And it will intentionally shut down the heater command inside the engine computer, I have dealt with this before. You have to clear the codes and then it will start commanding the heater circuit on again.

The 1st diagram is the front of the engine, in some cases you will need to remove the Heat shield shown in the diagram, but if you buy an Oxygen sensor socket that can fit through the hole in the heat shield, it makes the job a lot easier. Run the car for a little bit so the exhaust gets hot, this makes it easier to remove the sensor, just wear gloves to prevent getting burned. Unplug the sensor first with the vehicle off. And then unscrew the sensor from the exhaust. They can get rusted into the exhaust pipe, so getting it hot helps. After replacing the sensor. clear the codes and see if the MAP sensor (P0101) comes back. If it does, there can be a circuit problem to the sensor, a vacuum leak into the Intake manifold, or just a bad sensor. If you have a basic multimeter, we can check the circuit to make sure it's getting its power feed and a proper Ground. But we will come back to that after the Air Fuel Ratio sensor is replaced.
The 2nd diagram just shows the wire colors for the AF sensor, but they are very easy to find on these Camrys.

One other thing, there is a tag on the underside of the hood, it should say if this vehicle is California Emissions or just Federal Emissions Standards. Check that too so we know which we are dealing with. California Emissions vehicles have a much higher standard than Federal.

https://www.2carpros.com/articles/how-to-replace-an-oxygen-sensor

https://www.2carpros.com/articles/how-to-use-a-voltmeter