WK CRD throwing codes. - JeepForum.com
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post #1 of 25 Old 04-23-2020, 09:45 PM Thread Starter
KMS081991
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WK CRD throwing codes.

I own a 2008 Jeep WK with the CRD (OM642) engine at over 320k km. I recently had a shop replace my camshaft sensor with a new one that I had purchased from a Mercedes dealership; the engine was throwing the P0341 Code indicating either a circuit or cam sensor fault. When I drove home the engine code was still illuminated, so I cleared the code with my scan tool. Aside from the cam sensor being replaced, the thermostat housing was also replaced as the thermostat was open.

I find that if I clear the codes and then drive it for 10 to 15 km the code for P0341 will reappear. Other codes that have occurred as well are:

1) P0698 - Sensor Reference Voltage 3 Circuit Low
2) P0402 - EGR Excessive Flow Detected
3) P2237 - O2 Sensor 1/1 Pump Cell Current Circuit/Open


Today, I drove 15 mins or 10 km to the furthest grocery store, I park it and shop for about 15 mins and come out; it starts right up and I drive another 10 to 15 mins to the next store. I parked again for about 5 to 10 mins; I came out jumped in and waited for the fuel pump to prime and then attempted to start it.

It cranked, then stalled, then almost tries to start again. I turn the key a second time, it cranks then misfires and stalls; third time it starts. I connected my scanner and it pulled U1132 Lost Communication with Generator. I drove home and parked, I turned off the Jeep and started it again and idled.

I have read it could be either a wiring harness issue, a alternator issue, a battery issue, fuel filter issues?

What would you tackle first? What should I isolate and how should I isolate it? What should I ask my mechanic to look at?



I normally would do the work myself, but I am on call for my work.


Ontario, Canada Living; 2008 Jeep WK 3.0 L CRD (OM642); Approximately 320,000 KM
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post #2 of 25 Old 04-23-2020, 10:03 PM
SteveROntario
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I would focus on the P0341 as you have two sensors now and it seems to be your main problem. They can get the test procedure for that code and eventually determine where the problem is located. If it's wiring then they should look at all of the wires in that area and fix them all.
If you have an old fuel filter get it changed because it is due. At least disconnect and reconnect the battery to ensure good connection...this needs to be done when inspecting the harness anyway since the computer is under the battery.

All of those sensors related to the codes are on the passenger side of the engine aren't they? Another clue.

2013 Civic, 2009 Suzuki DRZ-400SM, 2008.5 Grand Cherokee CRD, 1991 Dodge B250, 1934 Hupmobile 417W
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post #3 of 25 Old 04-24-2020, 12:21 PM Thread Starter
KMS081991
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Quote:
Originally Posted by SteveROntario View Post
I would focus on the P0341 as you have two sensors now and it seems to be your main problem. They can get the test procedure for that code and eventually determine where the problem is located. If it's wiring then they should look at all of the wires in that area and fix them all.
If you have an old fuel filter get it changed because it is due. At least disconnect and reconnect the battery to ensure good connection...this needs to be done when inspecting the harness anyway since the computer is under the battery.

All of those sensors related to the codes are on the passenger side of the engine aren't they? Another clue.
I will look into it.

Aside from removing the battery, what can I do in my driveway in a short amount of time? Let's say a day or two? I have wrenched on vehicles before, but only small stuff such as alternators, throttle bodies, bearings/hubs. I have socket sets and breaker bars.

Also where can I find all the ground leads? What if I wanted to clean them up? Is this something I could do within a day or two? Or at least diagrams?


I ask this because I work within the Canadian Armed Forces and could be told to go to work within hours, to 24 hours to a day, to 36 hours, depending situations.

Ontario, Canada Living; 2008 Jeep WK 3.0 L CRD (OM642); Approximately 320,000 KM
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post #4 of 25 Old 04-24-2020, 12:47 PM
SteveROntario
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Removing the battery and battery tray is easy. Probably 5 or 6 fasteners total. Visually inspect the harness as it comes out from the computer and passes obstacles such as the aluminum AC lines.
Not having access to a store will make it hard for you to fix the wiring harness. You may want to do a visual and have a garage finish up the repairs if you see anything. Modern commercial scanners at garages usually provide the full test sequence for every code so perhaps just drop it off at a garage that has that ability so that they can diagnose and repair it.
I just had a look in my copy of the manual and it does not have details on P0341. Perhaps JTEC is around to help?

2013 Civic, 2009 Suzuki DRZ-400SM, 2008.5 Grand Cherokee CRD, 1991 Dodge B250, 1934 Hupmobile 417W
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post #5 of 25 Old 04-25-2020, 10:25 AM Thread Starter
KMS081991
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Quote:
Originally Posted by SteveROntario View Post
Removing the battery and battery tray is easy. Probably 5 or 6 fasteners total. Visually inspect the harness as it comes out from the computer and passes obstacles such as the aluminum AC lines.
Not having access to a store will make it hard for you to fix the wiring harness. You may want to do a visual and have a garage finish up the repairs if you see anything. Modern commercial scanners at garages usually provide the full test sequence for every code so perhaps just drop it off at a garage that has that ability so that they can diagnose and repair it.
I just had a look in my copy of the manual and it does not have details on P0341. Perhaps JTEC is around to help?
Which manuals do you refer to? Are they in print?

Ontario, Canada Living; 2008 Jeep WK 3.0 L CRD (OM642); Approximately 320,000 KM
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post #6 of 25 Old 04-25-2020, 11:59 AM Thread Starter
KMS081991
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2nd.

Do I have to worry about anti-theft when I remove the battery?

Ontario, Canada Living; 2008 Jeep WK 3.0 L CRD (OM642); Approximately 320,000 KM
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post #7 of 25 Old 04-25-2020, 01:26 PM
SteveROntario
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No problem with anti-theft. You can search for "Jeep WK" on archive dot org for manuals.

2013 Civic, 2009 Suzuki DRZ-400SM, 2008.5 Grand Cherokee CRD, 1991 Dodge B250, 1934 Hupmobile 417W
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post #8 of 25 Old 04-27-2020, 01:26 PM Thread Starter
KMS081991
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I took out the battery, cleaned off the posts and the terminals, took apart some grounds on the
driver side, took out the tray and cleaned it and finally unseated the bus connections on the PCM; I used contact cleaner and dielectric grease on all the connectors and pins I touched. I put everything back together and drove it for a good 35 to 40 kms; no codes yet, the ac and heat works, sunroof works, radio works, 12v chargers work, lights work.

Success? I think so?
Tetto and underscore like this.

Ontario, Canada Living; 2008 Jeep WK 3.0 L CRD (OM642); Approximately 320,000 KM
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post #9 of 25 Old 05-04-2020, 05:01 PM Thread Starter
KMS081991
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Update:

The codes went away for a whole week of driving. The same Cam Sensor code just came back today. I will look into what to do next.
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Ontario, Canada Living; 2008 Jeep WK 3.0 L CRD (OM642); Approximately 320,000 KM
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post #10 of 25 Old 05-05-2020, 12:06 AM
sc32valve
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Quote:
Originally Posted by KMS081991 View Post
Update:

The codes went away for a whole week of driving. The same Cam Sensor code just came back today. I will look into what to do next.
Although rare on the later models, it could be possible that the sensor is getting finicky. Definitely a good place to start, but a pain in the *** to get to. Earlier models definitely had issues with the cam position sensor.
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post #11 of 25 Old 05-05-2020, 12:33 PM
badgerwithhands
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Garage
I think it's really easy to get to. I did have to swap the sensor AND the connection because it had deteriorated from an injector leak. I found a pigtail on idparts or rockauto. Can't seem to find my picture.

07 WK Overland CRD, cargo LEDs, OME HD, MOPAR skids, rack,
future mods: tires, lights, CB, skids,
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post #12 of 25 Old 05-06-2020, 11:36 AM Thread Starter
KMS081991
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Quote:
Originally Posted by badgerwithhands View Post
I think it's really easy to get to. I did have to swap the sensor AND the connection because it had deteriorated from an injector leak. I found a pigtail on idparts or rockauto. Can't seem to find my picture.
I would be interested in that pig tail part number.

Ontario, Canada Living; 2008 Jeep WK 3.0 L CRD (OM642); Approximately 320,000 KM
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post #13 of 25 Old 05-10-2020, 03:27 AM
Zroe89
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Quote:
Originally Posted by sc32valve View Post
Although rare on the later models, it could be possible that the sensor is getting finicky. Definitely a good place to start, but a pain in the *** to get to. Earlier models definitely had issues with the cam position sensor.
You may be thinking of the crank position sensor which was in deed a problem on early CRD models. It is a bit of a truck to get to, but I did mine while I was inside the driver fender well already for a starter replacement.

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post #14 of 25 Old 05-10-2020, 06:33 AM Thread Starter
KMS081991
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Update:

So without doing a single thing the codes have gone away; over the past 3 days I have driven 144 km. I didn't have to clear them. I will see if they reappear

Ontario, Canada Living; 2008 Jeep WK 3.0 L CRD (OM642); Approximately 320,000 KM
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post #15 of 25 Old 05-12-2020, 02:02 PM Thread Starter
KMS081991
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Still no codes, except for the battery indicator came up yesterday; it makes sense since the battery I had was 3 years old. I replaced it and drove it, with no issues yet.

My next questions:

1) How does one test the alternator output? I heard that the PCM regulates this alternator. Where do I probe it at?

2) Do I have to disconnect anything to test it?

3) Also when the time comes to change the alternator, how easy is it to upgrade to the 220 AMP alternator from the Sprinters? Is it straightforward in that the connections are the same?

Ontario, Canada Living; 2008 Jeep WK 3.0 L CRD (OM642); Approximately 320,000 KM

Last edited by KMS081991; 05-13-2020 at 05:54 AM.
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