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Code P0868

Quick reference

P0868 at a glance

Plain-language meaning
This code means that the car's computer thinks the pressure of the fluid in the transmission is too low. It's like when your bike tires don't have enough air, making it hard to ride.
Urgency
Moderate – It is important to address this issue to prevent further transmission damage.
Difficulty
Moderate
System
Transmission Performance Issue
Tools mentioned
OBD-II scanner, Transmission fluid pressure gauge, Basic hand tools

This summary uses the existing diagnostic information shown in full below.

Laymans terms

This code means that the car's computer thinks the pressure of the fluid in the transmission is too low. It's like when your bike tires don't have enough air, making it hard to ride.

Explanation

The transmission fluid pressure is lower than expected, which can affect the transmission's ability to operate correctly.

Technical description

The P0868 code is set when the Transmission Control Module (TCM) detects that the transmission fluid pressure is below the manufacturer's specified range. This can lead to improper transmission operation, as the hydraulic pressure is crucial for engaging gears and ensuring smooth shifting.

Symptoms

• Transmission slipping

• Delayed or harsh shifting

• Illuminated check engine light

Common Causes

• Low transmission fluid level

• Faulty transmission fluid pressure sensor

• Blocked or restricted transmission fluid passages

Glossary

Transmission: A system in a vehicle that transmits power from the engine to the wheels.

Fluid Pressure: The force exerted by the fluid within the transmission system.

Diagnosis steps

• Check the transmission fluid level and condition.

• Inspect the transmission fluid pressure sensor.

• Check for any blockages in the transmission fluid passages.

Repair procedures

• Refill or replace transmission fluid if low or contaminated.

• Replace the faulty transmission fluid pressure sensor.

• Clean or repair any blocked fluid passages.

Tools required

• OBD-II scanner

• Transmission fluid pressure gauge

• Basic hand tools

Estimated repair cost

$150 - $500

Difficulty level

Moderate

Commonly affected vehicles

• Dodge Ram

• Chrysler 300

• Jeep Grand Cherokee

Preventive measures

• Regularly check and maintain transmission fluid levels.

• Perform scheduled transmission services.

• Avoid aggressive driving habits.

Error code type

Transmission Performance Issue

User experience recommendations

• Do not ignore the check engine light.

• Have the transmission inspected by a professional.

• Avoid driving the vehicle if the transmission is slipping significantly.

Warranty information

Check with the vehicle manufacturer for specific warranty coverage related to transmission components.

Historical data

The P0868 code has been commonly reported in vehicles with high mileage or inadequate transmission maintenance.

Urgency level

Moderate – It is important to address this issue to prevent further transmission damage.

Testing conditions

• Vehicle at operating temperature

• Transmission in drive

Component location

The transmission fluid pressure sensor is typically located on or near the transmission housing.

FAQs

Q: Can I drive with a P0868 code?
A: It's not recommended to drive with this code as it can lead to further transmission damage.

Q: How do I know if my transmission fluid is low?
A: Check the transmission dipstick for fluid level and condition; it should be at the proper level and not discolored or burnt.

Optional diagnostic gear

Tools that may help diagnose P0868

THINKCAR ThinkScan Bidirectional diagnostic tool illustration

High-End · Full-system diagnostics

THINKCAR ThinkScan Bidirectional

A full-system bidirectional platform aimed at advanced DIY users and professional diagnostic workflows.

Network faults often require full-system access instead of a generic code reader alone.

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Klein Tools MM325 diagnostic tool illustration

Universal · Digital multimeter

Klein Tools MM325

A solid entry-level multimeter for voltage, continuity, resistance, and basic electrical troubleshooting.

Helpful for checking voltage drops, grounds, and basic circuit health when modules are not communicating.

View on Amazon
WORKPRO Wiring Repair Kit diagnostic tool illustration

Universal · Wire connectors and repair kit

WORKPRO Wiring Repair Kit

Useful when diagnosis points toward damaged wiring, corroded terminals, or connector repairs.

Useful if diagnosis points toward damaged connectors, wiring, or terminal repairs.

View on Amazon

These are optional diagnostic tools, not guaranteed fixes. As an Amazon Associate I earn from qualifying purchases.

Source: ezOBD2 diagnostic database
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