This code is caused by an electrical circuit problem and cannot be caused by a mechanical problem in the transmission.
DTC Description
Confirmed DTC
Pending DTC
Freeze Frame
P0842 Transmission Fluid Pressure Sensor/Switch A Circuit Low
1.
Problem verification:
Problem verification
?1.
Turn the vehicle to the ON mode.
?2.
Clear the DTC with the HDS.
?3.
Check the parameter(s) below with the HDS.
Signal
Threshold
Current conditions
Values
Unit
Values
Unit
Driven Pulley Pressure Sensor(V)
Less than 0.21
V
Do the current condition(s) match the threshold?
YES
The failure is duplicated. Go to step 2.
NO
Intermittent failure, the system is OK at this time. Check for an intermittent short to ground in the PDN wire between the CVT driven pulley pressure sensor and the PCM. If the freeze data/on-board snapshot of this DTC is recorded, try to reproduce the failure under the same conditions with the freeze data/on-board snapshot.?
2.
Determine possible failure area (PDN line, others):
Determine possible failure area (PDN line, others)
?1.
Turn the vehicle to the OFF (LOCK) mode.
?2.
Disconnect the following connector.
CVT driven pulley pressure sensor 3P connector
?3.
Turn the vehicle to the ON mode.
?4.
Check the parameter(s) below with the HDS.
Signal
Threshold
Current conditions
Values
Unit
Values
Unit
Driven Pulley Pressure Sensor(V)
Less than 0.21
V
Do the current condition(s) match the threshold?
YES
Go to step 3.
NO
Go to step 4.
3.
Shorted wire check (PDN line):
Shorted wire check (PDN line)
?1.
Turn the vehicle to the OFF (LOCK) mode.
?2.
Jump the SCS line with the HDS, and wait more than 1 minute.
NOTE: This step must be done to protect the PCM from damage.
Repair a short to body ground in the PDN wire between the CVT driven pulley pressure sensor and the PCM.?
NO
The PDN wire is OK. Check for any authorized service information related to the DTCs or symptoms you are troubleshooting, or replace the original PCM.?
