Code is p0846 Transmission Fluid Pressure Sensor/Switch 'B' Circuit Range/Performance. What part do i need to fix it. I cant find any information We were driving on the interstate with cruise control on and the car slowed down on its own and now will not start. We checked it for code and it came up p0846. Whether you need P0846 diagnostic tree information, P0846 diagnosis tips, P0846 technical information, P0846 diagnostics, P0846 troubleshooting help, or just answers to your code P0846 question, the Transmission Rebuilders Network is the place to go!
DTC Logic
DTC DETECTION LOGIC
| DTC | CONSULT screen terms (Trouble diagnosis content) | DTC detection condition | Possible causes |
| P0846 | TRANSMISSION FLUID PRESSURE SEN/SW B (Transmission Fluid Pressure Sensor/Switch B Circuit Range/Performance) | The detection conditions continuously for 5 seconds or more under the following diagnosis conditions: Diagnosis conditions
Detection conditions
The rate of change in vehicle speed [km/h (MPH)]: Between −49 (−30) and +49 (+30) inclusive The rate of change in accelerator pedal angle: Between −1.3/8 and +1.3/8 inclusive |
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DTC CONFIRMATION PROCEDURE
CAUTION:
Be careful of the driving speed.
1.PREPARATION BEFORE WORK
If another “DTC CONFIRMATION PROCEDURE” occurs just before, turn ignition switch OFF and wait for at least 10 seconds, then perform the next test.
>> GO TO 2.
2.CHECK DTC DETECTION
- Start the engine.
- Shift the selector lever to “D” position.
- Drive the vehicle at a constant velocity of 40 km/h (25 MPH) at lease for 10 seconds.
CAUTION:
At the same time, the accelerator pedal angle must be maintained constant.
- Stop the vehicle.
- Check the first trip DTC.
Is “P0846”detected? YES >> Go to TM-192, 'Diagnosis Procedure'.
NO >> INSPECTION END
Diagnosis Procedure
1.CHECK TCM INPUT SIGNAL
- Start the engine.
- Check voltage between TCM connector terminal and ground.
Is the inspection
result normal? YES >> Check intermittent incident. Refer to GI-39, 'Intermittent Incident'.
NO >> There is a malfunction of secondary pressure sensor value. Replace transaxle assembly. Refer to TM-283, 'Removal and Installation'.
P0847 TRANSMISSION FLUID PRESSURE SEN/SW B
DTC Logic
DTC DETECTION LOGIC
| DTC | CONSULT screen terms (Trouble diagnosis content) | DTC detection condition | Possible causes |
| P0847 | TRANSMISSION FLUID PRESSURE SEN/SW B (Transmission Fluid Pressure Sensor/Switch B Circuit Low) | The secondary pressure sensor voltage is 0.09 V or less continuously for 5 seconds or more under the following diagnosis conditions: Diagnosis conditions
|
|
DTC CONFIRMATION PROCEDURE
1.PREPARATION BEFORE WORK
If another “DTC CONFIRMATION PROCEDURE” occurs just before, turn ignition switch OFF and wait for at least 10 seconds, then perform the next test.
>> GO TO 2.
2.CHECK DTC DETECTION
With CONSULT
- Start the engine.
- Select “Data Monitor” in “TRANSMISSION”.
- Select “FLUID TEMP”.
- Maintain the following conditions for 10 seconds or more.
FLUID TEMP : −19В°C (−2.2В°F) or more
- Check the first trip DTC.
With GST
P0846 Versa
- Start the engine and wait for at least 10 seconds.
CAUTION:
When the ambient temperature is −20В°C (−4В°F) or less and the engine is cold, warm up the engine for approximately 5 minutes.
- Check the first trip DTC.
Is “P0847”detected? YES >> Go to TM-194, 'Diagnosis Procedure'.
NO >> INSPECTION END
Diagnosis Procedure
1.CHECK CIRCUIT BETWEEN TCM AND CVT UNIT (PART 1)
- Turn ignition switch OFF.
- Disconnect TCM connector and CVT unit connector.
- Check continuity between TCM harness connector terminals and CVT unit harness connector terminals.
Is the inspection
result normal?
YES >> GO TO 2.
NO >> Repair or replace malfunctioning parts.
2.CHECK CIRCUIT BETWEEN TCM AND CVT UNIT (PART 2) Adobe hosts list.
Check continuity between TCM harness connector terminals and ground.
Is the inspection
result normal? YES >> GO TO 3.
NO >> Repair or replace malfunctioning parts.
3.CHECK TCM INPUT SIGNALS
- Connect all connectors removed.
- Start the engine.
- Check voltage between TCM connector terminal and ground.
Is the inspection
result normal? YES >> Check intermittent incident. Refer to GI-39, 'Intermittent Incident'.
NO >> There is malfunction of secondary pressure sensor. Replace transaxle assembly. Refer to TM- 283, 'Removal and Installation'.
P0848 TRANSMISSION FLUID PRESSURE SEN/SW B
DTC Logic
DTC DETECTION LOGIC
| DTC | CONSULT screen terms (Trouble diagnosis content) | DTC detection condition | Possible causes |
| P0848 | TRANSMISSION FLUID PRESSURE SEN/SW B (Transmission Fluid Pressure Sensor/Switch B Circuit Low) | The secondary pressure sensor voltage is 4.7 V or more continuously for 5 seconds or more under the following diagnosis conditions: Diagnosis conditions
|
|
DTC CONFIRMATION PROCEDURE
1.PREPARATION BEFORE WORK
If another “DTC CONFIRMATION PROCEDURE” occurs just before, the ignition switch OFF and wait for at least 10 seconds, then perform the next test.
>> GO TO 2.
P0846 Nissan
2.CHECK DTC DETECTION
Jon b bonafide. With CONSULT
- Start the engine.
- Select “Data Monitor” in “TRANSMISSION”.
- Select “FLUID TEMP”.
- Maintain the following conditions for 10 seconds or more.
FLUID TEMP : −19В°C (−2.2В°F) or more
- Check the first trip DTC.
With GST
- Start the engine and wait for at least 10 seconds.
CAUTION:
When the ambient temperature is −20В°C (−4В°F) or less and the engine is cold, warm up the engine for approximately 5 minutes.
- Check the first trip DTC.
Is “P0848”detected? YES >> Go to TM-196, 'Diagnosis Procedure'.
NO >> INSPECTION END
Diagnosis Procedure
1.CHECK SECONDARY PRESSURE SENSOR POWER SUPPLY CIRCUIT
- Turn ignition switch OFF.
- Disconnect CVT unit connector.
- Turn ignition switch ON.
- Check voltage between CVT unit harness connector terminal and ground.
Is the inspection result normal? YES >> GO TO 2.
NO >> Repair or replace malfunctioning parts.
2.CHECK SECONDARY PRESSURE SENSOR SIGNAL CIRCUIT
- Turn ignition switch OFF.
- Disconnect TCM connector.
- Check continuity between TCM harness connector terminals.
Is the inspection
result normal? YES >> GO TO 3.
NO >> Repair or replace malfunctioning parts.
3.CHECK TCM INPUT SIGNALS
- Connect all connectors removed.
- Start the engine.
- Check voltage between TCM connector terminal and ground.
Is the inspection
result normal? YES >> Check intermittent incident. Refer to GI-39, 'Intermittent Incident'.
NO >> There is a malfunction of secondary pressure sensor. Replace transaxle assembly. Refer to TM- 283, 'Removal and Installation'.
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