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2021
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Compass Trailhawk
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Repair and Diagnosis (Single Page)
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Engine Performance
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System
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2.4L - DTCS P1E08 To P2AF5
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Diagnosis And Testing
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P2271-O2 Sensor 1/2 Signal Biased Rich
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Set Condition
Set Condition
The Powertrain Control Module (PCM) detects that the downstream O2 Sensor does not transition from rich to lean.