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Jeep
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2009
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Commander Overland, 4WD
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Repair and Diagnosis
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Transmission
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Automatic Trans
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(Powertrain Control Module (Pcm) - Electrical Diagnostics - 545RFE Automatic Transmission)
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DTC Troubleshooting
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P0721-Output Speed Sensor Circuit Performance
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Monitor Conditions
Monitor Conditions
When Monitored:
The transmission gear ratio is monitored continuously while the transmission is in gear.