Possible causes
– EGR Valve Position Sensor
Tech description
Usually replacing the EGR Valve Position Sensor takes care of the problem. The sensor is located on top of the EGR valve.
Symptoms
– Engine Light ON (or Service Engine Soon Warning Light)
P1410 1998 TOYOTA AVALON OBD Code Description
The EGR Valve Position Sensor monitor the position of the EGR valve opening position.