What Does P1917 Mean?
The high clutch drum speed sensor signal is cutting in and out intermittently. This intermittent condition indicates an unstable sensor signal that affects transmission shift quality and adaptation.
Common Causes
40%
Loose or corroded electrical connector at sensor or TCM
30%
Intermittent wiring short or open circuit in transmission harness
20%
Failing high clutch drum speed sensor with internal intermittent fault
10%
Poor sensor mounting or air gap variation due to bearing wear
Diagnostic Steps
1
Step 1: Wiggle test all wiring and connectors while monitoring sensor signal for dropouts
2
Step 2: Inspect connector terminals for corrosion, bent pins, or signs of moisture intrusion
3
Step 3: Check for proper sensor mounting torque and air gap specifications
4
Step 4: Monitor sensor signal with oscilloscope during test drive to capture intermittent fault
5
Step 5: Check transmission fluid level and condition, inspect for metal contamination
Estimated Repair Cost
$150 - $1,200
Parts + labor, varies by vehicle and location
The high clutch drum speed sensor signal is cutting in and out intermittently. This intermittent condition indicates an unstable sensor signal that affects transmission shift quality and adaptation.
The most common cause of P1917 (High Clutch Drum Speed Sensor Intermittent) is: Loose or corroded electrical connector at sensor or TCM
Typical repair costs for P1917 range from $150 to $1,200, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Intermittent sensor signal may cause unexpected shift behavior or transmission going into limp mode. Generally safe to drive short distances but requires prompt diagnosis.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P1917 to identify the root cause.
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Quick Info
Category
Powertrain
System
Transmission Control System
Difficulty
Type
Manufacturer
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