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Home >> Chrysler >> 2012 >> 300 SRT-8 >> Repair and Diagnosis >> Transmission >> Transmission Control Systems >> Transmission Control Module (TCM) - Nag1 Automatic Transmission >> Diagnosis And Testing >> P0731-Gear Ratio Error In 1ST >> Set Condition:

Set Condition:

No shifting operation and actual gear is not the target gear. No shifting operation - actual (calculated) gear is less than target (expected) gear, no plausible gear is calculated, actual (calculated) turbine speed is greater than 300 rpm or calculated transmission ratio is above threshold. During an Upshift - actual (calculated) gear is less than target (expected) gear. During Downshift - actual (calculated) gear is greater than target (expected) gear.

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