PO846 Code ! ?
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From: Out West
PO846 Code ! ?
So , I have a 2010 CTD with a 68RFE tranny . I would call my towing medium duty , I have a 21 ft bumper pull travel trailer and haul loads of dirt and gravel in a dump bed trailer probably 6-8 times a year between the two, in mountainous terrain . I baby this truck while doing so..... I do not push it hard . . I have about 125k miles on it now and recently had the trans fully serviced by a shop that I trust.
So about 6-8 weeks after the trans fluid / filter service ..... maybe after about 2000 miles..... I tripped a PO846 code. when the truck was cold and just pulling out of the driveway. It went right into 4th gear and locked into 4th. I could not "button push" it into 1st gear . I shut the truck off , restarted and everything was fine. It does the same thing about every 2 months. I want to fix it !
The PO846 code suggests " Clutch 2 Prs. sensor plausibility "
I am willing to just buy a new ( factory OEM ) sensor and try it out but do not want to just throw money at it My questions ;
1. There are 3 bolted on sensors on this tranny . Two on the drivers side of the trans , And one towards the tail end of the passenger side . Which sensor is the one in question ? I think its the passenger side sensor ? Its Easy to change out .
2. Other than the elect plug connection and the trans fluid level , is there something else I should check before buying the sensor ?
3. With these exact symtoms , could it be valve body problems as someone suggested to me ?
Looking for your suggestions . I do not have advanced testing devices , just a multimeter . I live more than an hour away from anyone that does.
Thank you in advance !!
So about 6-8 weeks after the trans fluid / filter service ..... maybe after about 2000 miles..... I tripped a PO846 code. when the truck was cold and just pulling out of the driveway. It went right into 4th gear and locked into 4th. I could not "button push" it into 1st gear . I shut the truck off , restarted and everything was fine. It does the same thing about every 2 months. I want to fix it !
The PO846 code suggests " Clutch 2 Prs. sensor plausibility "
I am willing to just buy a new ( factory OEM ) sensor and try it out but do not want to just throw money at it My questions ;
1. There are 3 bolted on sensors on this tranny . Two on the drivers side of the trans , And one towards the tail end of the passenger side . Which sensor is the one in question ? I think its the passenger side sensor ? Its Easy to change out .
2. Other than the elect plug connection and the trans fluid level , is there something else I should check before buying the sensor ?
3. With these exact symtoms , could it be valve body problems as someone suggested to me ?
Looking for your suggestions . I do not have advanced testing devices , just a multimeter . I live more than an hour away from anyone that does.
Thank you in advance !!
Last edited by dewclaw; Jan 2, 2025 at 11:50 AM. Reason: To shorten thread.
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