P0704 Code: Clutch Switch Input Circuit
🟠 Moderate severity · drivable
You can drive, but cruise control may not work and shifting can feel odd until the switch is fixed.
What P0704 means
The clutch pedal position switch on a manual transmission isn't sending the right signal to the engine computer. The computer uses this signal to smooth out torque when you press the clutch and to handle cruise control. Without it, shifts can feel jerky and cruise control may stop working.
Symptoms
- Check engine light is on
- Cruise control won't engage or drops out
- Hard or jerky shifts when engaging the clutch
- Engine may stall occasionally when releasing the clutch
Common causes
- most common: Faulty clutch switch
- common: Misadjusted clutch pedal switch
- common: Damaged wiring or loose connector
- less common: Worn clutch pedal assembly
How to fix it
| Fix | DIY? | Typical cost |
|---|---|---|
| Test the switch and adjust the clutch pedal position | Yes | $20–60 |
| Replace the clutch switch | Yes | $30–80 |
| Repair damaged wiring or connector | Mechanic | $100–250 |
Frequently asked questions
Can I drive with a P0704 code?
Yes, the car will still drive. You may notice cruise control won't work and shifts can feel harsher until the switch is fixed.
What does the clutch switch do?
It tells the computer when your foot is on the clutch pedal. The computer uses that to manage engine speed during shifts and to disengage cruise control when needed.
How much does it cost to fix a P0704?
A new clutch switch typically costs $30–$80, and it's a fairly simple DIY job on most cars.
Related codes
P0703
P0703 Code: Brake Switch B Circuit
P0725P0725 Code: Engine Speed Input Circuit
P0700P0700 Code: Transmission Control System Malfunction
Related guide: The 10 Most Common Check Engine Codes →
Updated 2026-08. This page is informational and not a substitute for professional diagnosis.