P1917 High Clutch Drum Speed Sensor Intermittent

Definition

Common causes

• Faulty high clutch drum speed sensor
• Wiring issues (damaged, frayed, or corroded wires)
• Poor electrical connections
• Transmission control module (TCM) malfunction
• Mechanical issues within the transmission
• Faulty transmission fluid temperature sensor
• Software issues or glitches in the TCM
• Low or contaminated transmission fluid

Common misdiagnoses

• Transmission fluid issues
• Faulty transmission control module (TCM)
• Wiring or connector problems
• Faulty speed sensors
• Transmission solenoid issues
• Mechanical transmission problems
• Engine control module (ECM) faults
• Incorrectly calibrated transmission parameters

Troubleshooting steps

1. 1. Check for Additional Codes

   Use an OBD-II scanner to check for any other related trouble codes. This can provide more context and help identify if there are other issues affecting the transmission

2. 2. Inspect Wiring and Connectors

   Examine the wiring and connectors associated with the high clutch drum speed sensor. Look for signs of damage, corrosion, or loose connections. Repair or replace any damaged components

3. 3. Test the Sensor

   Use a multimeter to test the high clutch drum speed sensor. Check for proper resistance and voltage output according to the manufacturer's specifications. If the sensor is out of spec, it may need to be replaced

4. 4. Check for Mechanical Issues

   Inspect the transmission for any mechanical problems that could affect the sensor's operation. This includes checking for proper fluid levels, leaks, or any signs of wear or damage in the transmission components

5. 5. Inspect Transmission Fluid

   Ensure that the transmission fluid is at the correct level and in good condition. Contaminated or low fluid can cause erratic sensor readings. If the fluid is dirty or burnt, consider changing it

6. 6. Clear Codes and Test Drive

   After performing any repairs or adjustments, clear the trouble codes using the OBD-II scanner and take the vehicle for a test drive. Monitor the transmission's performance and check if the P1917 code returns

7. 7. Check for Software Updates

   In some cases, the issue may be related to the vehicle's software. Check with the manufacturer or a dealership to see if there are any software updates available for the vehicle's transmission control module (TCM)

8. 8. Consult Technical Service Bulletins (TSBs)

   Look for any TSBs related to the P1917 code for your specific vehicle make and model. Manufacturers may have issued guidance on common issues and fixes

9. 9. Professional Diagnosis

   If the problem persists after performing the above steps, it may be necessary to consult a professional mechanic or transmission specialist. They can perform more in-depth diagnostics and repairs. By following these steps, you can systematically identify and address the underlying issues related to the P1917 code