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Home >> Chrysler >> 2012 >> 300 C, 4WD >> Repair and Diagnosis >> Transmission >> Transmission Control Systems >> Transmission Control Module (TCM) - Nag1 Automatic Transmission >> Diagnosis And Testing >> P0731-Gear Ratio Error In 1ST >> Possible Causes

Possible Causes

Possible Causes
PINION FACTOR IS NOT PROPERLY PROGRAMMED
LOW TRANSMISSION FLUID
OTHER TRANSMISSION DTCS PRESENT
INTERNAL TRANSMISSION FAILURE

Always perform the NAG1 Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to  STANDARD PROCEDURE  . 

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