LEMON Manuals
: Even more car manuals for everyone: 1960-2025
Home
>>
Toyota
>>
1993
>>
Corolla Base, Automatic
>>
Repair and Diagnosis
>>
Engine Performance
>>
System
>>
Engine Controls - Tests W/Codes
>>
Trouble Code Diagnostic Charts
>>
Code 21 - Oxygen Sensor Signal
April 5, 2026:
LEMON Manuals is launched!
Read the announcement.
Code 21 - Oxygen Sensor Signal
Fig 1: Code 21 Flow Chart - OXYGEN Sensor Signal
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002