What is Fault Code P0087?
Fault code P0087, applicable to all vehicle manufacturers, means “Fuel Rail/System Pressure – Too Low.”
Background Knowledge: The fuel system needs to maintain constant pressure. If the fuel pressure is too low, the injectors spray fuel too weakly or not at all; if the pressure is too high, it can damage the fuel lines or injectors. This fault code indicates that the Electronic Control Unit (ECU) has detected that the fuel rail pressure is below the calibrated minimum value for a set period. Low pressure can be caused by issues with the fuel pump, fuel pump control module, fuel pressure regulator, fuel pressure sensor, fuel leaks, etc.
Symptoms of Fault Code P0087
- Difficulty starting the engine, or inability to start at all
- Severe power loss
- Engine stumbling under load
- Acceleration problems
- Warning light on the instrument panel
Main Causes of Fault Code P0087
- Poor fuel quality/clogged filter
- Faulty fuel pump
- Damaged fuel lines or fuel leaks
- Faulty pressure sensor in the rail
How to Diagnose Fault Code P0087?
- Read the fault code using an OBD2 scanner
- Check the fuel pressure within the system using a pressure gauge or diagnostic equipment
- Check fuel lines for damage or leaks
- Inspect the condition of, and replace if necessary, the fuel filter
- Test the operation of the fuel pump and pressure sensor
Possible Causes and Diagnostic Methods
| Possible Cause | How to Check? |
| Clogged fuel filter | Visual inspection and replacement |
| Fuel leak | Look for wet spots, smell under the hood |
| Faulty high-pressure pump | Measure pressure with a scanner |
| Faulty pressure sensor | Check with a multimeter and scanner |
Tools Required: OBD2 diagnostic scanner, mechanical or electronic fuel pressure gauge, multimeter, toolkit for accessing filter and pump
How to Fix Fault Code P0087? (Problem Solutions)
Simple Repair Methods
- Replace the fuel filter
- Inspect and tighten fuel line connections
- Use high-quality fuel
- Clean the fuel system with additives
In-Depth Diagnosis and Repair Plan
- Replace the high-pressure fuel pump
- Replace the fuel rail pressure sensor
- Repair fuel system leaks
- Inspect and replace the fuel pressure regulator
Troubleshooting by Symptoms
| Symptom | Possible Solutions |
| Power loss | Check the filter and system pressure |
| Engine won’t start | Test the fuel pump and its power supply |
| Frequent stalling | Diagnose the pressure regulator |
| Engine misfire | Read codes and check the sensor |
Fault Code P0087 in Common Vehicles
- P0087 in Ford Focus: Ford vehicles are characterized by issues with the fuel pump and pressure sensor, especially in diesel models.
- P0087 in Volkswagen Passat: This is often observed when using low-quality fuel and with wear on the injection pump. Diagnosis of the common rail system is mandatory.
- P0087 in Chevrolet Cruze: Clogged filters and damaged main pumps are common. There may be issues with the electrical part of the pump.
- P0087 in Toyota Land Cruiser: The error can be related to wear on the pump and pressure regulator under conditions of increased load and fuel contamination.
- P0087 in Audi A4: The main causes are problems with the pressure sensor and leaks in the fuel rail.
P0087 FAQ
Can you drive with fault code P0087?
No, driving a car with this fault can lead to unstable engine operation or even a stall due to fuel starvation.
What to do if fault code P0087 appears?
Fault P0087 indicates insufficient fuel pressure in the system. This can be caused by a clog, leak, pump, or sensor failure. Timely diagnosis and repair can help avoid serious engine damage.
Can fault P0087 appear due to bad fuel?
Yes, contaminated or low-quality fuel can clog the filter, affecting system pressure and triggering the fault.
How to reset fault code P0087 without fixing it?
You can try disconnecting the battery for 10-15 minutes or resetting the fault with an OBD2 scanner. However, if the underlying issue persists, the fault will likely reappear soon.
P0087 Related OBD2 Faults
- P0088 – Fuel System Overpressure
- P0191 – Fuel Pressure Sensor Range/Performance
- P0627 – Fuel Pump Control Circuit Malfunction
Important! Ignoring this fault can lead to damage to the pump or engine. The sooner you react, the lower the risk and cost. Always use high-quality fuel, replace filters on time, and check the condition of the fuel system at the first signs of unstable engine operation.