Key Dance after switch recall and P0520 - Jeep Commander Forums: Jeep Commander Forum
Regular Service / Maintenance This section contains discussion about regular service and maintenance (upkeep) of your Jeep Commander

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post #1 of 12 (permalink) Old 12-26-2016, 06:39 PM Thread Starter
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Key Dance after switch recall and P0520

Well I had my first check engine light on my 06 - not bad for 90,000 miles and 11 years old. I tried to do the key dance to get the code, ign switch on/off 3 times quickly - It takes a lot more skill now that the ign switch has had the recall done ( 6 months ago) and you must push it in to turn, sort off. Anyway it took about 15 tries and finally got my code of P0520 - Oil pressure switch. I checked oil and OK, engine sounds fine. Reset by pulling battery neg cable and no more check engine light. Will see if it returns. Funny, I just had the dealer do some repairs (3 days ago) and not sure if related, do not know where the switch is yet but could replacing the trans oil cooler lines be close to it? They also replaced the water pump and front Diff bushings. Any ideas?
By the way - where is the oil pressure switch on the 5.7??? Couldn't find it in the service manual!

06 Commander Limited Hemi - QDII,
Past -89 Comanche, 98 Grand Cherokee (2WD), 2000 Cherokee, 05 Grand Cherokee Limited 4.7
Had to replace the brakes - they opened more gas stations in town
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Last edited by rblapham; 12-26-2016 at 06:48 PM.
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post #2 of 12 (permalink) Old 12-27-2016, 12:51 AM
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You might want to consider buying a Flashpaq tuner - so you can not only read your current DTC's but also clear out the old stored ones.


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post #3 of 12 (permalink) Old 12-27-2016, 01:30 PM Thread Starter
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Quote:
Originally Posted by Big Blue View Post
You might want to consider buying a Flashpaq tuner - so you can not only read your current DTC's but also clear out the old stored ones.
One code to read and clear in 11 years - do not think the tuner is cost effective But I really love tools so there is a chance.

06 Commander Limited Hemi - QDII,
Past -89 Comanche, 98 Grand Cherokee (2WD), 2000 Cherokee, 05 Grand Cherokee Limited 4.7
Had to replace the brakes - they opened more gas stations in town
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post #4 of 12 (permalink) Old 12-27-2016, 06:25 PM
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Originally Posted by rblapham View Post
One code to read and clear in 11 years - do not think the tuner is cost effective But I really love tools so there is a chance.
Yea, reading & clearing DTC's is just one of many functions they perform.

If it's within your budget, I'd highly recommend getting one.


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post #5 of 12 (permalink) Old 12-29-2016, 11:44 AM Thread Starter
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I replaced the oil pressure switch/sending unit yesterday and no more check engine light. While changing it I saw one of the wires (brown/yellow) had a bare spot on it. Nothing near it that would cause it. Last week I had Chrysler replace the front differential bushings and that is very much in the area of the sending unit and wires. If it throws a P0520 again I'll know where to start. To repair a wire in there would be a challenge but doable. Picture attached.
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06 Commander Limited Hemi - QDII,
Past -89 Comanche, 98 Grand Cherokee (2WD), 2000 Cherokee, 05 Grand Cherokee Limited 4.7
Had to replace the brakes - they opened more gas stations in town
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post #6 of 12 (permalink) Old 12-29-2016, 07:45 PM
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Wire repair

Electrical Contact Cleaner and some vinyl dip should seal it with out a lot of bother, Clean it Well and Dry it Better Before You paint on the dip.


Swanny
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post #7 of 12 (permalink) Old 12-30-2016, 07:17 PM
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Quote:
Originally Posted by rblapham View Post
I replaced the oil pressure switch/sending unit yesterday and no more check engine light. While changing it I saw one of the wires (brown/yellow) had a bare spot on it. Nothing near it that would cause it. Last week I had Chrysler replace the front differential bushings and that is very much in the area of the sending unit and wires. If it throws a P0520 again I'll know where to start. To repair a wire in there would be a challenge but doable. Picture attached.
If the wire itself is not frayed at all and its just missing a piece of the insulation - and you haven't done something with it already, I'd just cover the exposed piece of wire with some liquid electrical tape and you shouldn't have to touch it again, it will be permanently sealed and it's quick and simple.


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post #8 of 12 (permalink) Old 01-03-2017, 12:15 PM Thread Starter
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Join Date: May 2009
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Picked up supplies this morning - electrical spray cleaner and liquid electrical tape.
Thanks Inferno and Blue - cleaned the wires and coated with the liquid tape.
I wasn't as worried about further corrosion, was thinking more of a broken wire or intermittent fracture.
but cleaning it up and protecting it is a good move. Pictures below
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Name:	Oil pressure sensor.JPG
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Name:	Oil pressure sensor 2.JPG
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Name:	Oil pressure sensor 3.JPG
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ID:	23354  

06 Commander Limited Hemi - QDII,
Past -89 Comanche, 98 Grand Cherokee (2WD), 2000 Cherokee, 05 Grand Cherokee Limited 4.7
Had to replace the brakes - they opened more gas stations in town
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Last edited by rblapham; 01-03-2017 at 12:44 PM.
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post #9 of 12 (permalink) Old 01-04-2017, 04:31 AM
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Join Date: Oct 2015
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Quote:
Originally Posted by rblapham View Post
Picked up supplies this morning - electrical spray cleaner and liquid electrical tape.
Thanks Inferno and Blue - cleaned the wires and coated with the liquid tape.
I wasn't as worried about further corrosion, was thinking more of a broken wire or intermittent fracture.
but cleaning it up and protecting it is a good move. Pictures below
That's good work rblapham.

It's never a bad thing to protect an exposed piece of wire.

You'll never have to worry about those wires again.


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Last edited by Big Blue; 01-04-2017 at 04:35 AM.
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post #10 of 12 (permalink) Old 01-08-2017, 10:57 AM Thread Starter
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Join Date: May 2009
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Power-Train: 5.7L V-8 Hemi
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Quote:
Originally Posted by Big Blue View Post
You'll never have to worry about those wires again.

Sorry but I will worry about it, I never got a good enough look at the wire to see it's actual condition as my eyes are not that good anymore and could not get close enough either. So worry I will as it is patched and not fixed properly. But it is only for the display and monitoring and will not cause damage to the engine if it breaks, I can tell just by ear if there is no oil pressure. So far it has been behaving

06 Commander Limited Hemi - QDII,
Past -89 Comanche, 98 Grand Cherokee (2WD), 2000 Cherokee, 05 Grand Cherokee Limited 4.7
Had to replace the brakes - they opened more gas stations in town
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