Code Definition

P1917 — High Clutch Drum Speed Sensor Intermittent

System: Powertrain  |  Type: Manufacturer-Specific  |  Make: Generic

About P1917

P1917 is a manufacturer-specific powertrain diagnostic trouble code. It belongs to the P-prefix family of codes, which covers engine, transmission, emissions, or fuel-system faults.

When P1917 is stored, the module has detected a signal or supply voltage higher than the expected operating range; and a sensor-related fault — the reported value from the named sensor is out of spec.

Scanning & clearing: A generic OBD-II scan tool will usually read and clear powertrain (P) codes. For live data, freeze-frame capture, and bi-directional tests you may need a more capable scan tool that supports the vehicle's ECM protocol.

P1917 is a manufacturer-specific code. The same code string on a different make may have a different meaning. Always confirm the code's definition against the vehicle's service information for the specific make and model under test.

Code Information

The P1917 fault code indicates that the Transmission Control Module (TCM) has detected an intermittent signal from the High Clutch Drum Speed Sensor. This sensor monitors the rotational speed of the high clutch drum, which is essential for proper shift timing and transmission performance. An intermittent signal suggests a temporary loss of communication, fluctuating readings, or an unstable connection.

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