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Unread 09-24-2009, 07:01 PM   #1
Nabis
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Checking CEL in Compass?

Wife complained of a CEL today. I explained it might be just a gas-cap issue, or something minor, as long as it's still running ok. I told her to get it home and I'll check the code. Here's the question: It doesn't seem to give me the code with the on-off-on-off-on method, like my GC. Is there something different that must be done with the Compass to check it?

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Unread 09-25-2009, 03:58 AM   #2
Gramps
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There aren't always codes that show up but if there are it works the same way on all of the later Jeeps with the OBII system. Here's a link to a long winded explanation of the Engine Light: http://www.jeepforum.com/forum/f98/e...seless-855751/

Note: Check Engine Light=Malfunction Indicator Light
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Unread 09-25-2009, 06:48 AM   #3
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Right, so in post #8, you state the normal protocol for checking the CEL (MIL, if you prefer) for OBDII Jeeps. My question was, is that confirmed, because I tried that, and got nothing. Not even the dashes that normally show when there are no codes.
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Unread 09-25-2009, 03:32 PM   #4
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Autozone says it's a P000B

Last edited by Nabis; 10-28-2009 at 07:13 AM..
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Unread 09-25-2009, 04:08 PM   #5
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Neither the dealer or the key methods have ever produced any codes on mine personally. MIL is what the books call it, just trying to be consistant.

Did they say what that code means? The SM calls for a code P000B-BANK 1 CAMSHAFT 2 POSITION SLOW RESPONSE and then skips to P0010. There are 10 different reasons that would cause the P000B code. I can give you a run down if needed. Everything from dirty oil or wrong viscosity to several different solenoids, PCM, camshaft phaser and circuitry.
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MK Skid Plate fasteners for sale posts 68 & 69

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Unread 10-02-2009, 08:35 AM   #6
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Brought into dealership.
Took them a while to figure out, but apparently there is some TSB for some emissions module, which has apparently failed, producing the intermittent MIL.
They didn't have the parts to fix it, and will take at least 2-3 days for them to get it. Hopefully by early next week, this will all be cleared up.
Although the Compass has 64k miles on it, they said it would be covered under warranty.
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Unread 10-28-2009, 07:10 AM   #7
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I wanted to keep people informed of the conclusion on this one -
Although the Jeep was out of warranty, the dealership covered all repairs under under TSB 18-018-07.
Covered by Federal Emissions 8-80 warranty.
Flashed PCM, TSM, Replaced both intake & exhaust oil control valves, replaced oil filter, oil, and road-tested.
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Unread 10-28-2009, 04:23 PM   #8
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Thanks for the update!
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MK Skid Plate fasteners for sale posts 68 & 69

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Unread 11-02-2009, 08:12 AM   #9
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Ugh... CEL came on again today.
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Unread 11-06-2009, 12:03 PM   #10
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Got a call from dealership. The customer service guy couldn't explain with any sense of knowledge what the cause and solution is, other than, "there's a fault in the evap system". He says, "It'll be around $300 to fix".
I told him to not do anything with the vehicle until I can investigate the issue myself.
Update: As I'm writing this, customer service calls back - He says he'll take 20% off the bill. I ask him what the codes were that were thrown - he says P0456, C2205, & C121C. I tell him I'll still pick the vehicle up, because I feel that it is beyond coincidence that these codes are thrown not much time after I had the vehicle in for the other issue, and I'd like to get another opinion. He says that it won't be ready for at least an hour due to "putting stuff back together".
Here's a link to the main issue (the C2205, and although he said C121C, I think the code was C121A): http://project-jk.com/images/tsb/TSB_08-010-07.pdf
With that knowledge, $220.00 to flash a PCM with the updated module is ridiculous. I also feel that the P0456 is just a gas-cap issue, or something unrelated to a real evap leak.

Last edited by Nabis; 11-06-2009 at 12:18 PM..
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