What could cause P0841?

R1PERK

MEMBER
2006 JEEP LIBERTY
119,000 MILES

CRD 5-45rfe trans started with code p0876. Change 3 pressure sensors (used), no help. Changed solenoid pack(new from Jeep), no help. Changed valve body (used from 2000 Durango), no help. Changed trans (used from another Durango), code p0841, at least no more p0876. Changed valve body(back 06 Jeep) and with new solenoid pack, no change. Changed pressure sensor, no help. Still have p0841 and in Limp Mode. Have always cleared codes before retesting.

What else should I try?

5 Replies

HMAC300

MECHANIC
48,601 POSTS

What that code is is a pressure rationality. So ther eis either a crack int he case which changeing wouldn't do it or a bad connection/bad wire or a bad vavle body plate/gasket. Have a trans pro check it they are more famiiiar with those.

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Tuesday, September 6th, 2011 AT 8:31 PM

R1PERK

MEMBER
3 POSTS

I can read the code description. I have already stated I have changed the valve body. No bad wire or connection because codes changed with transmission change. If I wanted a trans pro to check the transmission I would taken it to one. What a stupid answer. And for that you expect a donation?

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Wednesday, September 7th, 2011 AT 12:36 AM

HMAC300

MECHANIC
48,601 POSTS

Teh reason I said to take it to a trans pro is because there is pressure differential caused form something like a leaky valve/badswitch or a possible bad seal even if it'a adifferent trans. There may be something that the trans prois more familiar with on that type of situation. Otherwise you willhave to trace the circuit back and see if the power is right coming to the trans. And through it to return. Just because the codes changed doesn't mean a bad wireconnection becaue both codes basically show the same thing a pressure diffferential, that is why it's in failure mode.

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Wednesday, September 7th, 2011 AT 1:13 AM

HMAC300

MECHANIC
48,601 POSTS

This has bugged me a little so I went back into tsbs and found this, especially since you changed the trans to no avail. You migh ttry the tsb which deals with an oil cooler filter for the trans and one of the codes given is the one you are seeking an answer to. There are 3 things to this so read each one. This is why it's easier to take it to a trans pro as he may know about this already and saved you the oney as well as time of replacing a trnas you may not have needed. Not saying this will fix it but well worth a try.

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