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Home >> Chrysler >> 2011 >> 300 C, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 234 (DTCS P1D94 To U1479 - 8HP45 Automatic Transmission - 1500) >> Diagnosis And Testing >> P1DB5-Incorrect Gear Ratio During Shift >> Set Condition

Set Condition

WARNING: This page is about a different car, the 2013 RAM 1500. However, it is still accessible from the selected car via links, so may be relevant.

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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