Been real Challenging.
Most codes related to Air Fuel Ratio , Oxygen and Crankshaft Sensors and VSC warnings-Take to your dealer
Latest Code P2237 O2 Sensor 1 Bank 1.
Attempted resolutions
Replaced Bank 1 Air Fuel Ratio and Bank 2 Air Fuel Ratio Sensors
Replaced Oxygen Sensors Bank 1 Sensor 2 and Bank 2 Sensor 2
Replaced Crankshaft Sensor Prior efforts replaced all spark plugs and coils
Replaced Battery and Alternator a month ago.
After replacing the four Air Fuel Ratio and Oxygen Denso Sensors today, I reset and cleared all codes.
Now Bank1 Sensor 1) is back (original code problem)
Has anyone had and resolved this problem? Can't smog and register the car as a result.
I' thinking nwxt to replace the ECU. Any feedback is appreciated. Thank you

 

Unless you have harness damage (rodents or accident) then the ECU is probably your next logical repair attempt. Were all parts replaced OEM?

 

Hello and Thank you. I made an error in my post. I replaced one Air fuel ratio sensor with genuine Toyota and the other Air Fuel ratio Bank 2 sensor 1 with a Denso sensor. I replaced both bank 1 sensor 2 and bank 2 sensor 2 with Denso sensors. Could there be an incompatibility issue?
I also have the VSC std warning but have no other error codes than Bank 1 sensor 1 again P2237 as I stated. Appreciate your input. Thank you

 

Depends on if your parts were in fact made by Denso. If you buy on Amazon they are probably counterfeit, Ebay isn't any better.

 

Check live data before throwing parts like that......