2002 neon

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#1
2.0 auto when trying to shift into 2nd gear feels like the front brakes locks up , it will not shift into 2nd..it will start again and then locks up again I got a code of P0720 changed the trans oil and filter and changed the output sensor.. Now it gives me a P0841 need words of wisdom..
 
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#2
I will give you the description and causes-

Symptom:
P0841-LR PRESSURE SWITCH SENSE CIRCUIT
: The DTC is set if one of the pressure switches are open or closed at the
wrong time in a given gear

first would be wiring to solenoids - I will try to get a diagram... My repair requires a SCANNER and DVOM hoping resident guru BP will have a DIY quick test

POSSIBLE CAUSES
RELATED RELAY DTC’S PRESENT
LOSS OF PRIME P0944 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
POWERTRAIN CONTROL MODULE
INTERMITTENT WIRING AND CONNECTORS
 

bp042665

hunting nut
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#3
OK sorry so late but here i am most of the time it is the solenoid pack but on rare times it is the valve body.you see the L/R switch valve in valve body is also the lock up channel so when it goes into second the valve will spool back and progressive apply lock up and if bore is worn the pressure will read at L/R solenoid when it should not have any. hence L/R solenoid code also when you had pan off did you see and metal?