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Home >> Chrysler >> 2012 >> 300 C, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 23 (Transmission Control Module (TCM) - DTCS P1D94 To U1479 - 8HP45 Automatic Transmission) >> Diagnosis And Testing >> P1DB5-Incorrect Gear Ratio During Shift >> Set Condition:

Set Condition:

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A failure is detected if the measured gear ratio exceeds the gear ratio range. If a failure is detected during a gear shift, the Transmission Control Module (TCM) aborts the gear shift and the gear from which the shift has been started is engaged. After a calibrated number of failures are detected a DTC is stored and the TCM commands a default gear.

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