Engine-Codes - Jeep - P0868 Jeep

P0868 Jeep Code - Line Pressure Low

- Code Popularity: 26,580 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC P0868 Jeep?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Low transmission fluid level
  • Faulty Line Pressure Sensor
  • Plugged Transmission Oil filter
  • Stuck or Sticking Main regulator Valve
  • Faulty Transmission Oil Pump

Code Tech Notes

There is a Factory Service Bulletin for the Jeep following models:
2005-2006 Jeep Liberty
2005-2006 Jeep Cherokee
2005-2006 Jeep Grand Cherokee
2006 Jeep Commander
Jeep Factory Service Bulletin OBDII Code P0868

⚠ Does your Jeep have Safety Recalls? → Check here

How to Fix the DTC P0868 Jeep?

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 pins.

Search for P0868 Jeep Questions and Answers: Search here →

What is the Cost to Diagnose the Code?

Labor: 1.0

The cost to diagnose the P0868 Jeep code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.

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.

What are Code Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)
  • Delay of shifting

What Does the P0868 Jeep Code Mean?

Line 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 Code - Line Pressure Low

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