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Horizon Automatic
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Engine Controls - Tests W/Codes - 2.2L
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DRIVEABILITY Tests (Non-Turbo)
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Dr-7: Code 21 "O2 Sensor Signal" (Non-Turbo)
Dr-7: Code 21 "O2 Sensor Signal" (Non-Turbo)
Fig 1: DR-7: Circuit Diagram & Flow Chart