P0868 JEEP Possible Causes
- Low transmission fluid level
- Faulty Line Pressure Sensor
- Plugged Transmission Oil filter
- Stuck or Sticking Main regulator Valve
- Faulty Transmission Oil Pump
First diagnose P0868 JEEP code
Check the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.
P0868 JEEP Tech NotesThere is a Factory Service Bulletin for the Jeep following models:
2005-2006 (KJ) Liberty / Cherokee
2005-2006 (WK / WH) Grand Cherokee
2006 (XK) Commander
Jeep Factory Service Bulletin OBDII Code P0868
Cost of diagnosing the P0868 JEEP code
Labor: 1.0The cost of diagnosing the P0868 JEEP code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle's make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
When is the P0868 JEEP code detected?If the actual line pressure is consistently lower than the target while driving, the line pressure low DTC P0868 will set.
P0868 JEEP Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
- Delay of shifting
P0868 Jeep DescriptionLine pressure is measured by the Line Pressure Sensor (LPS) and regulation is achieved by changing the duty cycle of the Pressure Control Solenoid (PCS) controlled by the Transmission Control System. (5% duty cycle = solenoid off = Max line pressure, 62% duty cycle = solenoid on = Min line pressure). The Transmission Control System calculates the desired line pressure based on inputs from both the engine and transmission.
The Transmission Control System calculates torque input to the transmission and uses it as the primary input to the desired line pressure calculation. This is called Torque Based Line Pressure. In addition, the line pressure is set to a preset level 827 or 931kPa (120 or 135 psi) during shifts and in Park and Neutral to ensure consistent shift quality. The actual line pressure is continuously being compared to the desired (target) line pressure.
P0868 JEEP More InformationNeed more information on how to fix the P0868 JEEP code?
Get Access to Factory Service Manuals
Need more help?Get the P0868 Jeep code diagnosed by a professional: Find a repair shop in your area
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