P0944 Code - Loss Of Hydraulic Pump Prime
Quick Answer
The diagnostic trouble code P0944 indicates a "Loss Of Hydraulic Pump Prime" in the vehicle's hydraulic system. Common causes include Low transmission fluid levels: Insufficient fluid can prevent the hydraulic pump from priming properly, Air in the hydraulic system: Air bubbles in the system can disrupt the hydraulic pressure and lead to loss of prime, Faulty pump solenoid: A malfunctioning pump solenoid can prevent the pump from building up pressure. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P0944 indicates Loss Of Hydraulic Pump Prime.
- Common causes
- Common causes include Low transmission fluid levels: Insufficient fluid can prevent the hydraulic pump from priming properly, Air in the hydraulic system: Air bubbles in the system can disrupt the hydraulic pressure and lead to loss of prime, Faulty pump solenoid: A malfunctioning pump solenoid can prevent the pump from building up pressure.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
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Code P0944 Description
The diagnostic trouble code P0944 indicates a "Loss Of Hydraulic Pump Prime" in the vehicle's hydraulic system. This code typically affects vehicles with automatic transmissions that rely on hydraulic pressure to operate various components, such as the torque converter, clutch packs, and gear synchronizers. When the hydraulic pump loses prime, it means that the pump is unable to build up the necessary pressure to properly function, leading to various performance issues.
Common Causes of P0944
- Low transmission fluid levels: Insufficient fluid can prevent the hydraulic pump from priming properly.
- Air in the hydraulic system: Air bubbles in the system can disrupt the hydraulic pressure and lead to loss of prime.
- Faulty pump solenoid: A malfunctioning pump solenoid can prevent the pump from building up pressure.
- Clogged filters: Dirty or clogged filters can restrict the flow of fluid to the hydraulic pump.
- Leaks in the hydraulic system: Any leaks in the hydraulic lines or components can result in a loss of prime.
Symptoms of P0944
- Harsh shifting: The vehicle may experience abrupt and rough gear changes while driving.
- Slippage: The transmission may slip out of gear or struggle to maintain power delivery.
- Delayed engagement: There may be a delay in the transmission engaging when shifting from park to drive or reverse.
- Transmission overheating: The transmission may overheat due to the lack of proper lubrication and cooling.
- Transmission warning light: The vehicle's dashboard may display a transmission warning light indicating a problem.
How to Fix P0944
- Check transmission fluid levels: Ensure the transmission fluid is at the correct level and top up if necessary.
- Inspect for leaks: Thoroughly check the hydraulic system for any leaks and repair as needed.
- Bleed the hydraulic system: Remove any air bubbles from the system by bleeding the hydraulic lines.
- Replace faulty pump solenoid: If the pump solenoid is faulty, replace it with a new one.
- Clean or replace filters: Clean or replace any clogged filters to ensure proper fluid flow to the hydraulic pump.
Cost to Fix P0944
The cost of repairing a loss of hydraulic pump prime can vary depending on the specific cause of the issue and the extent of the damage. On average, the repair costs for this issue can range from $200 to $800, including parts and labor. However, it's important to note that the actual repair costs can be higher or lower based on factors such as the vehicle make and model, the location of the repair shop, and the hourly labor rates. It's recommended to consult with a qualified mechanic for a more accurate cost estimate based on your vehicle's specific needs.
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Code P0944 Information for Specific Makes
- P0944 Dodge — Loss Of Hydraulic Pump Prime
- P0944 Jeep — Loss Of Hydraulic Pump Prime
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