Question about 2002 Jeep Liberty
DTC P0846 - Transmission Fluid Pressure Sensor/Switch "B" Circuit Range/Performance
The pressure sensor codes are the ones to concentrate on first. typically gear ratio error codes are set from internal transmission failures but since you also have pressure sensor codes it may just need a new sensor. Remove the connector to the solenoid pack and check for broken or damaged pins and also see if water is getting into the connector.
The chances are that the sensor is bad. If that is the only code your getting then you might want to replace the sensor. Make sure the trans is full though, as that would make the pressure low and could set the code. Here is where the sensor is.
1. Raise vehicle.
2. Place a suitable fluid catch pan under the transmission.
1. Remove the wiring connector from the line pressure sensor (Fig. 83).
2. Remove the bolt holding the line pressure sensor to the transmission case.
3. Remove the line pressure sensor from the transmission case.
1. Install the line pressure sensor into the transmission case.
2. Install the bolt to hold the line pressure sensor into the transmission case. Tighten the bolt to 11.9 Nm (105 in. lbs.) .
3. Install the wiring connector onto the line pressure sensor
4. Verify the transmission fluid level. Add fluid as necessary.
5. Lower vehicle.
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Posted on Feb 14, 2012
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Posted on Jan 02, 2017
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