P0087 on Mercedes-Benz
Fuel Rail/System Pressure - Too Low
P0087 on Mercedes-Benz vehicles indicates fuel rail/system pressure - too low. Au7o has documented this code across 1 Mercedes-Benz model — most commonly on E-Class. This code means the fuel rail or fuel system pressure has dropped below the level the engine's computer expects. The computer monitors a fuel pressure sensor and has seen pressure fall too low, meaning the engine isn't getting enough fuel — especially noticeable under acceleration or load. This is most common on direct-injection and diesel systems that run very high pressures. Symptoms include hard starting, stalling, hesitation, lack of power, and possible limp mode. Typical repair costs on Mercedes-Benz range from $900 to $1,800, depending on the specific model and root cause.
Common Causes of P0087
- •Clogged or dirty fuel filter
- •Weak or failing fuel pump (lift pump or high-pressure pump)
- •Faulty fuel pressure regulator or control valve
- •Restricted or leaking fuel lines
- •Faulty fuel pressure sensor
- •Air in the fuel system or running low on fuel
- •Worn high-pressure pump (direct injection/diesel)
P0087 on Mercedes-Benz by Model
Mercedes-Benz E-Class(1 issue)
- Fuel Pump Delivery Module Failure Leading to Extended Crank, Stalling, or No-Start2021-2024
A number of late-model E-Class owners reported hard starting, long crank times, hesitation, and occasional stalling traced to low-pressure fuel supply faults, including in-tank fuel pump or delivery module issues. Mercedes service literature for related models and owner reports point to intermittent fuel pressure loss rather than a high-pressure pump problem in some cases. Symptoms can be sporadic at first and become a complete no-start as the pump weakens.
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What does P0087 mean on Mercedes-Benz?▼
P0087 stands for "Fuel Rail/System Pressure - Too Low." This code means the fuel rail or fuel system pressure has dropped below the level the engine's computer expects. The computer monitors a fuel pressure sensor and has seen pressure fall too low, meaning the engine isn't getting enough fuel — especially noticeable under acceleration or load. This is most common on direct-injection and diesel systems that run very high pressures. Symptoms include hard starting, stalling, hesitation, lack of power, and possible limp mode. On Mercedes-Benz specifically, this code is documented across 1 model.
What causes P0087 on Mercedes-Benz vehicles?▼
Common causes on Mercedes-Benz: Clogged or dirty fuel filter, Weak or failing fuel pump (lift pump or high-pressure pump), Faulty fuel pressure regulator or control valve, Restricted or leaking fuel lines, Faulty fuel pressure sensor. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P0087 on a Mercedes-Benz?▼
Repair costs on Mercedes-Benz range from $900 to $1,800, depending on the specific model and root cause.
Which Mercedes-Benz models have P0087 documented?▼
Au7o has documented P0087 on 1 Mercedes-Benz model: E-Class.