Possible causes

– EGR Valve Position Sensor

Tech notes

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 Description

The EGR Valve Position Sensor monitor the position of the EGR valve opening position.