Possible causes

– Faulty Clutch Switch
– Misadjusted Clutch Switch
– Clutch Switch harness is open or shorted
– Clutch Switch circuit poor electrical connection
– Faulty Engine Control Module (ECM)

Tech notes

Check clutch switch adjustment, the switch should open and close when the clutch pedal is depress. If the switch is properly adjusted, replaced the clutch switch to resolve problem.

When is the code detected?

ECM did not detect any movement in the clutch pedal position switch

Symptoms

– Engine Light ON (or Service Engine Soon Warning Light)

P0704 Description

When the clutch pedal is depress the voltage signal from the clutch switch to the Engine Control Module (ECM) is low. If the ECM does not see this change from high to low when the vehicle is over 0 mph, the ECM sets code P0704.

P0704 Information for specific makes

P0704 AUDI
P0704 CADILLAC
P0704 CHEVROLET
P0704 FORD
P0704 GMC
P0704 HYUNDAI
P0704 KIA
P0704 MAZDA
P0704 VOLKSWAGEN
P0704 HONDA
P0704 ACURA
P0704 BUICK