07 Wrangler X EGR valve and codes?
Been experiencing some minor surging for a while and then the engine light came on. Stopped in to the local auto parts place and they told me it was the EGR valve and sensor by their code reader. I didn't get the actual codes. They looked it up and told me they don't have access to replacements for that so, called the local goofball dealership where I bought it. While a great guy in service answered and talked with me about it all, I never liked their sales staff - but that's a different story.
So, he tells me I can have them do the work based on the parts place analysis or I can have them check it out for an additional $95. First question. Are they saying it will take $95 to hook the single hand held code reader and just read the numbers off of it like the parts place or is there something more indepth they will do? If they are reading the same handheld meter the parts place was, can't see a reason to pay them almost $100 to plug in a meter and go "Yep, EGR"
Second, if I have them diagnose it (and pay the $95) it's going to cost me $360 to have them replace it. I found only one article on the net tonight about Jeep 07 EGR replacement and it does look fairly complicated. I haven't wrenched anything for a while except my Harley and that's light maint. This sound about right?
Last question. I have about 53K on the 07 X. Is this something that just happens every 50+K or so? Lucky for me I bought mine about 1 month before they switched to the lifetime warranty - yay for me huh?
The EGR valve can be replaced at home. It's not that hard.
But first, get the code and post it here.
This is how:
1. To check your Jeep JK Wrangler’s DTC codes, simply insert your key into the ignition, turn it to the ‘ON’ position but do not start the engine. Then, push the key into the ignition cylinder and while holding it in, turn it to the ‘OFF’ position and then back to the ‘ON’ position (3) times straight making sure to end with it in the ‘ON’ position. It is important to keep pushing in on the key to prevent it from catching at the different positions along the way.
2. If you do step #1 correctly, all your dash lights will illuminate and your odometer will show up as a series of (6) dashes. If your Jeep JK Wrangler has logged any DTC’s, they will be displayed soon after the dashes appear. Write down the DTC(s).
3. If your Jeep JK Wrangler has not logged any DTC’s, the dashes on your odometer will be followed by the message ‘-done-’. Turn your key to the ‘OFF’ position and you will in fact be done.
I was afraid to flip through the switch too fast but I got it figured out. Code comes back as P0406. The list in that page you quoted shows it to be "P0406 EGR POSITION SENSOR CIRCUIT HIGH"
That's the only code it shows before it says "Done" on the dash.
PS, for all the rest that may not know about this one -
Project-JK.com - Jeep JK Wrangler Resource
Thanks for the pointers on where to figure out the code. So this still almost a sure bet it's the EGR valve and sensor? I am making the assumption they are part of the same part/unit?
As you cans see below, it could be a wiring problem, or even the PCM.
However, people have been successful by replacing the EGR valve.
The EGR Valve wouldn't have been covered by the lifetime warranty. Only the basic warranty. (3 year/36,000 miles).
P0406-EGR POSITION SENSOR CIRCUIT HIGH
EGR position sensor signal is greater than the maximum acceptable value. One trip Fault.
(K34) EGR POSITION SENSOR SIGNAL CIRCUIT SHORTED TO THE (F856) 5-VOLT SUPPLY CIRCUIT
(K34) EGR POSITION SENSOR SIGNAL CIRCUIT SHORTED TO VOLTAGE
(K34) EGR POSITION SENSOR SIGNAL CIRCUIT OPEN
(K900) SENSOR GROUND CIRCUIT OPEN
EGR SOLENOID ASSEMBLY
POWERTRAIN CONTROL MODULE (PCM)
So, is there any other sensor than the EGR valve? Mine is sending a P0404. Do I still need to replace the EGR Valve?
2007 JK, 54,000 Miles.
Just for reference all the codes are listed here > http://www.jeepforum.com/forum/f96/j...8/#post4710891 and there is a link to the code list page in the F.A.Q.
There are a few things to check first, but is has usually been a new EGR valve that fixes it.
P0404-EGR POSITION SENSOR RATIONALITY OPEN
Theory of Operation
The EGR valve has a position sensor and the EGR position rationality is designed to make sure that the valve moves freely within its operating range. Closed valve position reference check verifies that the valve is within its allowable upper and lower limits. The EGR position rationality test looks for a sustained error relative to commanded valve position.
The EGR flow or valve movement is not what is expected. A rationality error has been detected for the EGR Close Position Performance. Two trip fault.
EXCESSIVE RESISTANCE IN THE EGR SENSOR SIGNAL CIRCUIT
EXCESSIVE RESISTANCE IN THE 5 VOLT SUPPLY CIRCUIT
EXCESSIVE RESISTANCE IN THE EGR SOLENOID CONTROL CIRCUIT
SENSOR GROUND CIRCUIT OPEN
EGR SOLENOID GROUND CIRCUIT OPEN
EGR SOLENOID ASSEMBLY
POWERTRAIN CONTROL MODULE (PCM)
Thanks. I have ordered the valve from Wyckoff (through ebay). I'll probably work on it next weekend.
P0404 Error EGR
Hi there, did replacing the EGR valve fix your P0404 error you were getting?
Yes. It has not come back. Unit was very rusted looking inside.
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