code p0306 cause codes p1135 an p1155 to come on on a 1999 lexus es300

Code p0306 cause codes p1135 an p1155 to come on a 1999 lexus es300

the fault code [generic-po306] is a cylinder 6 misfire,and can throw up manufacture specific p1135 and p1155. get a local garage to remove the number 6 plug from your lexus,and view the electrode end to see if it is 'oiled up'as you could have an internal engine problem,however it is rare to just have 1 cylinder with a specific problem,and will most commonly be the coil,you would be better off to replace all the 6 spark plug's and the 1 coil for that defective cylinder, 

Getting code p1135 and p1155 on toyota rav4 2002

Here's what the codes mean:

P1135 Air/Fuel Sensor Heater Circuit Response (Bank 1 Sensor 1)

P1155 Air/Fuel Sensor Heater Circuit. (Bank 1 Sensor 2

This is mainly related to the oxygen sensors. It maybe the sensors themselves or an open wire going to te sensors. They are mainly located on the exhaust pipe. One before and on after the catalytic converter.

Try the bottom two my bottom 2 went as well.

The sensors on top are referred to as air/fuel sensors or "wide band" sensors. The sensors on the bottom (after the cat) are O2 sensors. Bank 1 is the pipe that comes from cylinder #1 and bank 2 is the pipe that incorporates cylinder #2.