LEMON Manuals
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Grand Cherokee Trackhawk
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Engine Performance
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6.2L - DTCS P2631 To U1440
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DTC Troubleshooting
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P2631-O2 Sensor 2/1 Pump Cell Current Trim Circuit High
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Set Condition
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Set Condition
The Powertrain Control Module (PCM) detects a short to battery voltage on the O2 2/1 Positive Current Control circuit or the O2 2/1 Pump Cell Current Trim circuit.