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Infiniti
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2008
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M45 Base
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Repair and Diagnosis
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Transmission
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Automatic Transmission
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DTC P0731 A/T 1ST Gear Function
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Possible Cause
Possible Cause
Input clutch solenoid valve
Front brake solenoid valve
Direct clutch solenoid valve
High and low reverse clutch solenoid valve
Each clutch
Hydraulic control circuit