P0704: The computer found a fault in the clutch pedal switch input circuit
Clutch switch input circuit malfunction
Severity: Severity not verified — if the car runs badly, have it inspected
The sources define the code and list causes but give no urgency rating, so urgency is not verified.
P0704 in short
P0704 means the computer found a fault in the clutch pedal switch input circuit on a manual-transmission car. TroubleCodes.net lists a blown fuse, a faulty or misadjusted clutch switch, open or shorted wiring, a poor connection or a faulty control module. The check engine light comes on.
The clutch pedal position switch tells the computer when the pedal is pressed. If its signal looks wrong, the computer stores P0704.
TroubleCodes.net lists a blown fuse, a faulty or misadjusted switch, open or shorted wiring, a poor connection and a faulty control module as causes, and the check engine light as the symptom.
Most likely causes
These are general causes for this code across vehicles. None is specific to one make or model.
Cause 1: Faulty or misadjusted clutch switch
Common general cause- Why it ranks here
- Listed by TroubleCodes.net and the switch is the part the code names.
- What would change this
- Rises if a visual and electrical check finds a fault here. Falls if it checks out.
Cause 2: Open or shorted wiring, poor connection or blown fuse
Common general cause- Why it ranks here
- TroubleCodes.net lists the harness, connection and fuse.
- What would change this
- Rises if a visual and electrical check finds a fault here. Falls if it checks out.
Cause 3: Faulty control module
Common general cause- Why it ranks here
- Named last by TroubleCodes.net as the least common cause.
- What would change this
- Rises if a visual and electrical check finds a fault here. Falls if it checks out.
What to test first
Start at step 1. Each result tells you what it means and where to go next.
Step 1: Check the fuse for the clutch switch circuit and look over the switch connector.
IfFuse blown or connector loose
It meansFix that first.
Points to: Open or shorted wiring, poor connection or blown fuse
IfFuse and connector look fine
It meansHave the switch tested.
Step 2: Have a shop check the clutch switch adjustment and its signal with the pedal pressed and released.
Warning:The clutch switch can also act as a start-interlock; a mis-set switch may stop the car starting or allow it to start in gear.
IfSignal does not change or is out of adjustment
It meansAdjust or replace the switch.
IfSwitch good, wiring good
It meansControl module is suspect.
Symptoms
- Check engine light on
How to fix
Step 1: Check the fuse for the clutch switch circuit with the ignition off.
Parts and cost context
- Underhood fuse block (engine compartment fuse box):Check the fuse first. Labour varies; get a quote.
Labor varies by vehicle and shop; get a quote before you approve a repair.
Compare used part prices on PartPriceGuideOn your vehicle
Land RoverYour car
2014 · Range Rover Evoque
Supported by vehicle dataLand Rover bulletin SSM71847A covers a small volume of vehicles flagging TCM codes P0704 or P0704-07 during an SDD DTC read, related to the 9HP48 automatic transmission on 2014 vehicles. Whether it is still current is not verified.
SSM71847AStatus unverified
9-speed automatic faults flagging P0704 on 2014 Evoque
2014range-rover-evoque · issued · NHTSA 10206624
A small volume of 2014 model year Evoque (L538) are flagging TCM codes P0704 or P0704-07 during an SDD DTC read, which the bulletin says relate to the 9HP48 automatic transmission. Only the NHTSA summary was read.
We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.
Related codes
No curated relationships for P0704 yet.
P0704 questions
What does P0704 mean?
A fault in the clutch pedal switch input circuit, so the computer cannot read the pedal reliably.
Sources and review
- Trouble code P0704
- On-Board Diagnostic Trouble Codes (generic code title list)
- SSM71847A: 9-speed automatic faults flagging P0704 on 2014 Evoque
- Last reviewed
- Written by
- Saurabh K.
- Editorial review
- Pending
- Technician review
- Technician review pending
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