Question about 2009 Toyota Highlander V6
The heater element in the sensor has failed. Very high chance that replacing the O2 sensor will fix this issue.
Rare, but the engine computer may not be sending a signal to heat the sensor or a wire can be damaged. but this is very rare. Try replacing the sensor first. Its very simple.
this code is showing you the computer knows the circuit is not complete for some reason.
Posted on Jun 14, 2014
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Posted on Jan 02, 2017
SOURCE: diagnostic code p0135
What engine is in this vehicle? I assume the avalon would be a 3.0L or similar V6 engine. Bank 1 sensor one indicates one of the primary O 2 sensor controlling a/f ratio. Sensor one bank one would be the sensor located in the Front manifold, closest to the engine. Hope this solves your issue. I would first check the conector at this sensor for corrison before buying a new sensor.
Posted on Sep 29, 2008
check the mass air flow sensor there maybe dirt on the filiment inside the sensor causing false readings. cleaning or replacing it may make the codes go away.
Posted on Nov 18, 2009
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