DTC 21, 27 - Oxygen Sensor Signal

NOTE: DTC 27 (sub-oxygen sensor) applies to 2.2L California models only.

Fig 1: DTC 21, 27 - Schematic (2.0L)

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Fig 2: DTC 21, 27 - Schematic (2.2L)

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Fig 3: DTC 21, 27 - Detection Driving Pattern (1 Of 2)

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Fig 4: DTC 21, 27 - Detection Driving Pattern (1 Of 2)

Fig 5: DTC 21, 27 - Diagnostic Flowchart