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Jeep
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2009
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Commander Overland, RWD
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Repair and Diagnosis
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Engine Performance
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Ignition System
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Front Control Module (FCM) - Electrical Diagnostics
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DTC Troubleshooting
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B2112-5 Volt Supply Circuit Low
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Possible Causes
Possible Causes
Possible Causes
(F891) 5 VOLT SUPPLY CIRCUIT SHORTED TO GROUND
(F891) 5 VOLT SUPPLY CIRCUIT SHORTED TO THE (C918) FCM SENSOR RETURN CIRCUIT
A/C PRESSURE TRANSDUCER
FRONT CONTROL MODULE (FCM)