P0704 on 2009-2020 Nissan 370Z — Clutch Switch Input Circuit Malfunction
1 vehicles · 1 makes · $10-$150 repair
How to diagnose and fix P0704: most-reported vehicles
Ranked by owner reports. Each card gives the symptoms, how to confirm the cause, the fix, parts and sources for that vehicle.
Nissan 370Z · 2009–2020
370Z owners report failure of the small rubber/plastic stopper pad on the clutch pedal bracket. When it breaks or falls out, the clutch interlock switch may not be depressed, causing a no-crank condition on manual cars; in some cases cruise-control or clutch-switch logic also behaves incorrectly. This is a long-running Z-platform issue documented by owners across the 2009-2020 370Z run.
Common Symptoms
- No-crank with key/start button despite battery being good
- Vehicle starts only after manipulating clutch pedal
- Cruise control inoperative or cancels unexpectedly
- Loose debris from broken pedal stopper found on floor mat
How to Fix
Inspect the clutch pedal arm for the missing stopper where it contacts the clutch switch. If the pad is missing, replace it with the updated stopper or an aftermarket equivalent and verify clutch switch adjustment. If the switch itself was damaged or misadjusted after the pad failed, adjust or replace the switch and confirm normal start authorization.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
- Z1 urethane clutch-pedal switch stopper 46584-S0100 replacement
2009-2020 manual-transmission 370Z; sold individually. Inspect both stopper locations and install at the switch actually affected.
- OEM Nissan clutch-pedal position/start switch 25325-D400E
Do not confuse it with the separate cruise-control cancel switch; adjust clearance after installation.
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P0704 code reference
General diagnostic-code context. The code alone does not confirm a cause for your vehicle; use the applicable issue card and its sources.
Frequently asked questions
What does P0704 mean?
P0704 stands for "Clutch Switch Input Circuit Malfunction." Applies primarily to manual-transmission vehicles. Set when the PCM detects an implausible or out-of-range signal from the clutch pedal position switch, which informs the PCM whether the clutch is engaged (used for cruise control, starting, and idle/shift logic).
What are the most common causes of P0704?
The most common causes of P0704 are: Faulty clutch pedal position switch, Misadjusted clutch switch, Open or shorted clutch switch wiring, Poor connector or ground at the switch, PCM input circuit fault. The specific cause varies by vehicle.
How much does it cost to fix P0704?
Repair costs for P0704 range from $10 to $150, depending on the vehicle and root cause.
Which vehicles are affected by P0704?
Au7o has documented P0704 across 1 vehicle models from 1 manufacturers: Nissan.
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Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.