P0134, 02 circuit no activity detected (bank 1, sensor 1) 2004 toyota

Question

The check engine light came on and my OBD2 says it's a p0134 generic 02 circuit no activity detected ( bank 1, sensor 1 sensor. Please help!!!

Thanks

Answer 1

HI there,

Bank 1 senor 1 is the sensor mounted in the exhaust manifold. Most of the time when you get this code it's due to a bad sensor itself not sending any signal.Replace the sensor and it should resolve the problem.