What is DTC C107D?
Thread Starter
JK Jedi Master
Joined: Mar 2007
Posts: 14,800
Likes: 373
From: Midwest City, OK
What is DTC C107D?
Got a check engine light and the Hypertech reports a DTC C107D error code. That's not on any listing I can find. Anyone else see this before? Anyone have any idea what this means? I clear it, but it comes right back.
Eternal ***erator
Joined: Oct 2006
Posts: 18,270
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From: Niagara, New York
beats me, i cant find it either.
C107D isnt valid afaik, isnt it supposed to be 4 numbers?
C1070 maybe?
DTC c1070 is "Jeep: Rear Outlet Valve Control Circuit Low"
C107D isnt valid afaik, isnt it supposed to be 4 numbers?
C1070 maybe?
DTC c1070 is "Jeep: Rear Outlet Valve Control Circuit Low"
Last edited by HappyCurmudgeon; Dec 30, 2008 at 10:43 AM.
Thread Starter
JK Jedi Master
Joined: Mar 2007
Posts: 14,800
Likes: 373
From: Midwest City, OK
Okay, I have a real OBD II reader, and when I put that on there I get P0406--EGR Sensor A Circuit High. Don't know why the Hypertech was putting out something nonsensical. Is this one of the ones that's safe to ignore because it will go away by itself? It still returns every time I clear it.
JK Enthusiast
Joined: Jul 2008
Posts: 232
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From: Alberta
Did you just install the Hypertech now, or has it been there for a while? What if you reflash back to stock, and use this method to identify any errors:
If you get the same code(s), then it's a problem with the Exhaust Gas Re-circulation (EGR) and/or the ECM. If you don't get the code(s) I could only assume that it's a Hypertech related issue.
In stock form, if you do still get the P0406 error, one of the possible causes could be moisture in the exhaust system, resulting in the EGR valve to freeze and malfunction. Letting the vehicle sit in a warm environment and/or replacing the EGR valve could solve this.
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 as shown in the pic to the left. If your Jeep JK Wrangler has any logged in any DTC’s, they will be displayed soon after the dashes appear. Write down the DTC(s) and check it/them against the list below to find out what they mean.
3. If your Jeep JK Wrangler has not logged in 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.
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 as shown in the pic to the left. If your Jeep JK Wrangler has any logged in any DTC’s, they will be displayed soon after the dashes appear. Write down the DTC(s) and check it/them against the list below to find out what they mean.
3. If your Jeep JK Wrangler has not logged in 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.
In stock form, if you do still get the P0406 error, one of the possible causes could be moisture in the exhaust system, resulting in the EGR valve to freeze and malfunction. Letting the vehicle sit in a warm environment and/or replacing the EGR valve could solve this.
JK Super Freak
Joined: Dec 2007
Posts: 1,750
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From: WV relocated 2 Dyess AFB, TX
Mark have you updated your Hypertech in a while? I just updated mine a few days ago and man this thing feels even peppier. No error codes and the fuel mappings may have changed with hypertechs new update. I dont get any codes, never have in the past either.
JK Junkie
Joined: Oct 2007
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From: HAWAII
Thread Starter
JK Jedi Master
Joined: Mar 2007
Posts: 14,800
Likes: 373
From: Midwest City, OK
One weird thing: Day before yesterday the outside temperature control started acting odd. If would display 54, 58, 56, 55, etc every few seconds. After a few minutes it did finally settle down and, compared to other thermometers (banks, etc), it is reading correctly. I commented to Curtis (my son) that maybe some water had gotten into the sensor area. Now, we were headed to the car wash--first wash of the JK in--oh--six months. We'd driven through central NM on two-lane highways and picked up quite a bit of road grime from snow/ice removal procedures they use. I was concerned about leaving the salt on the vehicle, so gave it a pretty darned good hosing, even pointing the wash wand up underneath the engine area. Anyway, long story to suggest that I also was thinking that water may have gotten into the sensor area. So, I think I'll wait this one out.
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Thread Starter
JK Jedi Master
Joined: Mar 2007
Posts: 14,800
Likes: 373
From: Midwest City, OK
I have not. I suppose I should have yesterday when I was reinstalling the firmware. Anyway, I plan to get the recall done in a couple weeks, and will be going through this procedure again, so I should be up to the latest and greatest pretty soon. Thanks!
Thread Starter
JK Jedi Master
Joined: Mar 2007
Posts: 14,800
Likes: 373
From: Midwest City, OK