I just did one of these the other day, I removed the transmission pan and found a screw on filter had backed itself off. Good luck, transmissions are hard to fix this should keep you busy for a while that may know if you need more information

Symptom: P0841-LR PRESSURE SWITCH SENSE CIRCUIT When Monitored and Set Condition: When Monitored: Whenever the engine is running. Set Condition: The appropriate code is set if one of the pressure switches are open or closed at the wrong time in a given gear. Possible Causes LOSS OF PRIME P0944 PRESENT RELATED RELAY DTC'S PRESENT L/R PRESSURE SWITCH SENSE CIRCUIT OPEN TRANSMISSION CONTROL RELAY OUTPUT CIRCUIT OPEN L/R PRESSURE SWITCH SENSE CIRCUIT SHORT TO GROUND L/R PRESSURE SWITCH SENSE CIRCUIT SHORT TO VOLTAGE L/R PRESSURE SWITCH TRANSMISSION CONTROL MODULE INTERMITTENT WIRING AND CONNECTORS

Answered by Dr Loot (expert)
2,176 answers provided

ok thanks i did change fluid and filters about year ago so hopefully its just loose screw !! all i have is a cheap obd2 scanner but was wondering if u have a scematic of the wiring for the trans . seems to come and go like works one day then not next?

Response from Heavyd
1 question asked

I do have all of that and I think you're smart enough to go through the procedures so let me know anything else you need

Answered by Dr Loot (expert)
2,176 answers provided

ok thanks . well im going to start by pulling pan and checking filter securement . anything else i should be looking for well im in there?

Response from Heavyd
1 question asked

inspect the wires make sure you check the screw on filter make sure it is not lose, give it a general inspection and double check your work.

Answered by Dr Loot (expert)
2,176 answers provided