Wc 404 engine code - 2007 Jeep Grand Cherokee Overland

Code 404 is a problem with the EGR position sensor.
The valve and sensor would need to be tested.

Code 404 is a problem with the performance of the EGR valve.
Someone would need to test the operation of the valve and the sensor that watches it. You would need a shop manual for the procedure and basic tools.

An problem was detected in the EGR solenoid control circuit.
404 The EGR sensor's reported position makes no sense

most liekly is dirty, clean it if you have a 2.7 engine replace it ASAP or the engine will go bad

3.2 or 3.5 just clean it

you have a vacuum leak

404 is an EGR code
and 456 is gas leak

So probably tighten gas cap or replace gas cap for code 456 then for code 404 clean carbon deposits from EGR valve or replace it then e mail me for a certain test that has to be done at [email protected] thanks

Error code will have to be cleared. The way that cars know when to turn on the check engine light is that there is a recurring error for "x" miles or time, as long as that error exists in it's memory most cars will continue displaying the check engine light.

404 is exhaust gas recirculation circuit, and 405 is exhaust gas recirculation sensor circuit low. EGR sensor or ground?

404 & 406 appear EGR related. Check all hoses & connections at EGR. My guess is once EGR is fixed 430 will disappear. I believe EGR is just below & to left of alternator, 2 small bolts holding on.

Hi my name is Allen!

The code 404 doesn't mean anything unless you read the code book, but if its pertaining to the EGR Valve Position Sensor Low or High. This means the EGR Sensor is stuck and the EGR Valve will need to be replaced and the code cleared.

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