FixVault
Home
›
Lexus
›
1990
›
ES 250 Automatic
›
Repair and Diagnosis
›
Engine Performance
›
System
›
Engine Controls - Tests W/Codes
›
Code 21: Main O2 Sensor Signal Or Heater Signal
Code 21: Main O2 Sensor Signal Or Heater Signal
Fig 1: Code 21: Main O2 Sensor or Heater Signal
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002