P0944 Fault Code

Hydraulic Pressure Unit Loss of Pressure

• What does that mean?
• Symptoms
• Causes
• Solutions

The P0944 fault code indicates a loss of hydraulic pressure in the vehicle's pressure control unit. This code is critical as it affects the overall performance of the transmission system, potentially leading to shifting issues and reduced efficiency. Understanding the underlying issues is vital to maintaining vehicle functionality.

• The hydraulic pressure unit plays a vital role in managing the pressure required for transmission operation.
• A loss of pressure can stem from various components failing or external factors affecting the hydraulic system.
• Immediate attention is necessary to prevent further damage to the transmission system and ensure safe vehicle operation.

What are the symptoms of the P0944 code?

Drivers may experience a range of symptoms when the P0944 fault code triggers:

• Difficulty in shifting gears or slipping transmissions.
• Warning lights on the dashboard, indicating transmission issues.
• Unusual noises from the transmission area, such as grinding or whining sounds.
• Reduced acceleration and overall performance of the vehicle.

What causes the P0944 code?

Several factors could contribute to the loss of hydraulic pressure:

• Leaks in the hydraulic system can lead to diminished pressure.
• Faulty pressure sensors may incorrectly relay pressure readings.
• Clogged filters or damaged transmission components could obstruct hydraulic flow.
• Poor transmission fluid condition or incorrect fluid levels can compromise hydraulic pressure.

How to fix P0944?

To resolve the P0944 fault code, the following steps are recommended:

• Inspect the hydraulic system for leaks and repair or replace damaged components as necessary.
• Check and replace transmission fluid if it appears degraded or low in level.
• Replace clogged filters or screens that affect hydraulic flow.
• Test and, if faulty, replace pressure sensors to ensure accurate readings.
• Use a diagnostic scanner to clear the code after repairs and verify functionality through a road test.