P0704 Trouble Code

OBD/2 P0704 error code description and symptoms.

EGR Flow Insufficient Detected The EGR system is monitored during steady state driving conditions while the EGR is commanded on.
The test fails when the signal from the DPF EGR sensor indicates that EGR flow is less than the desired minimum. Vacuum supply EGR valve stuck closed EGR valve leaks vacuum EGR flow path restricted EGRVR circuit shorted to PWR VREF open to D.P.F. EGR sensor D.P.F. EGR sensor downstream hose off or plugged EGRVR circuit open to PCM VPWR open to EGRVR solenoid D.P.F. EGR sensor hoses both off D.P.F. EGR sensor hoses reversed Damaged EGR orifice tube Damaged EGRVR solenoid Damaged PCM Perform KOER self-test and look for DTC P0704 as an indication of a hard fault.

A good starting point in your diagnosis is checking all system fuses and fusible links. This can be done using the DVOM on the voltage setting. You will want to test the fuses with circuits loaded. Some fuses will appear normal until a load is placed on their respective circuit; at which point they will fail. This has been the cause of many 'phantom malfunctions'. Consult your vehicle information source for fuse and fusible link locations. If all fuses are in working order, you may want to check TCM relay operation by swapping identical relays. Usually the horn relay, starter relay, fuel pump relay, air conditioning clutch relay, and controller relays are similar enough in design to swap for diagnostic purposes.

Difficulty Level (Expert)
Level
Repair Time (60 Min.)
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Cost Prediction : $ 80-120

P0704 Error Code Repair Process :

If your p0704 clutch switch input circuit malfunction check engine light is illuminated, it's best to take it in for diagnostic testing, which can feel like a hassle. Because while the lights vary in appearance from vehicle to vehicle, all have the same basic meaning: There's a problem with the car's emissions system. The on-board diagnostics system P0704 and engine control unit are in charge of monitoring a bunch of different p0704 clutch switch input circuit malfunction, and if they get a reading that's a little out of whack, up pops the check engine light.

Wrench Tool P0704 is a kind of Powertrain Trouble Code

Powertrain of a modern automobile, comprising engine (with exhaust system), transmission, drive shaft, suspension and the wheels. In a motor vehicle, the term powertrain or powerplant describes the main components that generate power and deliver it to the road surface, water, or air.

Common Causes of P0704

A common cause of code P0704 is the failure of P0704 Clutch Switch Input Circuit Malfunction, but there are several other possible causes as well, such as ;

P0704 code for all cars

You can view according P0704 DTC for your car model. We selected several models to see obd2 solutions click and view it.

+P0704 Toyota RT +P0704 Volkswagen EA +P0704 NSU 1200 +P0704 TVR 420 +P0704 Humber Sceptre
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