What to Do When p0087 Fuel Rail System Pressure Is Too Low?

2 Answers
DelMartin
07/29/25 8:17am
p0087 fuel rail system pressure is too low. First, check the gasoline filter to see if it is clogged. If it shows low fuel rail pressure, you should first inspect the high-pressure fuel pump and then the low-pressure fuel pump in the fuel tank. Both of these situations require replacing the corresponding components. More information about automotive faults is as follows: 1. Definition of automotive faults: Automotive faults refer to the phenomenon where a vehicle cannot perform its functions, such as difficulty starting the engine, failure to start, oil or water leakage, malfunctioning lighting systems, etc. 2. Manifestations of automotive faults: If there is a fault, there will be manifestations. Common fault manifestations include sudden changes in working conditions, abnormal sounds, unusual odors, abnormal exhaust smoke, abnormal temperatures, abnormal appearance, abnormal fuel and lubricant consumption, and leakage. Common faults are those that occur frequently and are often encountered during use.
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GabrielFitz
08/12/25 11:27am
As someone who frequently tinkers with cars, I've encountered this issue several times. The P0087 fault code usually indicates insufficient fuel pressure, which can be particularly dangerous if the car suddenly stalls on the highway. I would first check if the fuel pump fuse is blown. If you can't hear the fuel pump humming when touching the fuel line, there's an 80% chance the fuel pump has failed. If the fuel filter hasn't been replaced in two years, it might be clogged and unable to supply enough fuel. Last time, my friend's car was fixed immediately after replacing the fuel filter. Another less common scenario is a stuck pressure relief valve. The most reliable method is to use a diagnostic tool to read real-time fuel pressure data—if it's below 300 kPa, there's definitely a problem. Remember, never continue driving forcefully; calling a tow truck is the safest option.
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