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Code 21 - No. 1 Oxygen Sensor Signal

Fig 1: Code 21 Flow Chart - No. 1 Oxygen Sensor Signal
G93I79424Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Fig 2: Code 21 Schematic - No. 1 Oxygen Sensor Signal
G93H79423Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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