P0868 JEEP - Line Pressure Low
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
How is the P0868 JEEP code repair?Start by checking 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.
2005-2006 Jeep Liberty
2005-2006 Jeep Cherokee
2005-2006 Jeep Grand Cherokee
2006 Jeep Commander
Jeep Factory Service Bulletin OBDII Code P0868
What is the cost to diagnose the P0868 JEEP code
Labor: 1.0The cost to diagnose the P0868 JEEP code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.
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When is the code detected?If the actual line pressure is consistently lower than the target while driving, the line pressure low DTC P0868 will set.
- Engine Light ON (or Service Engine Soon Warning Light)
- Delay of shifting
P0868 JEEP MeaningLine 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.
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