What Does P1680 Mean?
The clutch pedal position switch circuit has detected an abnormal signal or fault condition. This switch signals the ECM when the clutch is engaged or released to adjust fuel delivery and rev-matching.
Common Causes
35%
Failed clutch pedal position switch with worn internal contacts
25%
Misadjusted clutch switch position not properly actuated by pedal travel
20%
Damaged or broken wiring to clutch switch or corroded connectors
15%
Clutch pedal assembly worn or damaged preventing proper switch actuation
5%
ECM internal circuit fault or poor ground connection
Diagnostic Steps
1
Step 1: Locate clutch pedal position switch and check for proper mechanical operation by pressing clutch pedal
2
Step 2: Test switch operation with multimeter in resistance or continuity mode while cycling clutch pedal
3
Step 3: Check wiring continuity and voltage supply to switch (typically 5V or 12V reference)
4
Step 4: Verify proper switch adjustment - should activate at specific pedal travel point per manufacturer specs
5
Step 5: Monitor switch signal with scan tool live data while operating clutch pedal to confirm signal reaches ECM
Estimated Repair Cost
$75 - $250
Parts + labor, varies by vehicle and location
The clutch pedal position switch circuit has detected an abnormal signal or fault condition. This switch signals the ECM when the clutch is engaged or released to adjust fuel delivery and rev-matching.
The most common cause of P1680 (Clutch Released Switch Circuit) is: Failed clutch pedal position switch with worn internal contacts
Typical repair costs for P1680 range from $75 to $250, depending on the vehicle, location, and whether you do it yourself or go to a shop.
May cause rough engagement, stalling when clutch is pressed, or difficulty starting. Vehicle remains drivable but drivability is compromised.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P1680 to identify the root cause.
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Quick Info
Category
Powertrain
System
Clutch Control / Engine Management
Difficulty
Type
Manufacturer
Recommended Tools
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