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Grand Cherokee Trackhawk
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Repair and Diagnosis (Single Page)
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Engine Performance
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System
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6.2L - DTCS P219A To P2A0B
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DTC Troubleshooting
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P2237-O2 Sensor 1/1 Pump Cell Current Circuit/Open
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Set Condition
Set Condition
The Powertrain Control Module (PCM) detects an open on the O2 1/1 Positive Current Control circuit.