Error code

OBD2 P0704

OBD2P0704
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.

What it means

Clutch Switch Input Circuit Malfunction.

Severity

moderateCan drive, but it's recommended to address the issue soon.

Summary

P0704 indicates a malfunction in the clutch pedal position switch circuit, which is used by the transmission control module (TCM) or powertrain control module (PCM).

Symptoms

  • Malfunction Indicator Lamp (MIL) lights up

Common Causes

  • Blown fuse
  • Faulty clutch switch
  • Misadjusted clutch switch
  • Clutch switch harness is open or shorted
  • Poor electrical connection in the clutch switch circuit
  • Faulty control module

Diagnosis

  1. Check for blown fuses related to the clutch pedal position switch.
  2. Inspect and test the clutch switch for proper operation.
  3. Verify electrical connections in the clutch switch circuit are secure.
  4. Scan for additional diagnostic trouble codes (DTCs) under chassis or body systems.

Fixes

  • Replace faulty clutch switch

FAQ

What should I do if my MIL light is on due to P0704?

Check the fuse, inspect and test the clutch switch, verify electrical connections, and scan for additional DTCs.

Can a faulty control module cause this code?

Yes, a faulty control module can trigger P0704 if it fails to receive signals from the clutch pedal position switch correctly.

View source

Not affiliated with OBD2. Answer summarized from the manufacturer's manual linked above; consult that source for the authoritative procedure.

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