P0087 Fault Code

Fuel Rail/System Pressure - Too Low

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

P0087 is a diagnostic trouble code (DTC) that indicates a low fuel pressure condition within the fuel system or fuel rail. When this code is triggered, it typically means that the actual fuel pressure is below the desired or expected level as measured by the vehicle's fuel pressure sensor.

Common reasons for the P0087 fault code include a faulty fuel pump, clogged fuel filter, fuel pressure regulator issues, or a leak in the fuel system. Low fuel pressure can lead to engine misfires, poor acceleration, and overall decreased performance.

To address the P0087 code, it is recommended to:

1. Check the fuel pressure using a gauge to determine if it is within the manufacturer's specified range.
2. Inspect the fuel pump, fuel filter, and fuel pressure regulator for any potential faults or obstructions.
3. Address any leaks in the fuel system that may be causing the pressure drop.
4. Reset the fault code after completing any necessary repairs to see if the issue has been resolved.

It is essential to address the P0087 code promptly to prevent further damage to the engine and ensure optimal performance and fuel efficiency. If you are not comfortable diagnosing and repairing the issue yourself, it is advisable to seek the assistance of a qualified mechanic or automotive technician.

What are the symptoms of the P0087 code?

• Hard starting or no start condition
• Hesitation or stumbling during acceleration
• Loss of power
• Poor fuel efficiency
• Engine misfires
• Check Engine Light illuminating

What causes the P0087 code?

When a car's diagnostic system generates a P0087 fault code, it indicates that there is a problem with the fuel rail/system pressure being too low. The possible causes for this fault code include:

• Faulty fuel pump
• Clogged fuel filter
• Fuel pressure regulator issues
• Leaking fuel injectors
• Weak or failing fuel pump relay
• Wiring or electrical issues related to the fuel system

It is important to diagnose and address the underlying cause of the low fuel pressure to prevent further damage to the vehicle and ensure proper engine performance.

How to fix P0087?

To fix the P0087 fault code related to Fuel Rail/System Pressure being too low on cars, you can follow these steps:

1. Check the fuel pressure using a gauge to verify the low pressure issue.
2. Inspect the fuel filter for clogs or blockages that may be restricting fuel flow.
3. Check for any leaks in the fuel line or connections that could be causing pressure loss.
4. Test the fuel pump to ensure it is functioning properly and providing adequate pressure.
5. Verify the fuel pressure regulator is operating correctly and maintaining the proper pressure.
6. Replace any faulty components such as the fuel pump, fuel filter, or pressure regulator as needed.
7. Clear the fault code after making necessary repairs and test drive the vehicle to ensure the issue has been resolved.

Remember to always consult a professional mechanic or refer to the vehicle's service manual for specific guidance on troubleshooting and fixing the P0087 fault code.