Fuel SystemHigh ImpactDiesel

P0087 — Fuel Rail/System Pressure Too Low

The fuel pressure in the common rail or fuel rail is below the ECU-requested target pressure.

4+

Affected Brands

8+

ECU Platforms

4

Related Services

1

Related DTCs

Symptoms

What the driver typically experiences when P0087 is stored

!Check Engine Light
iSevere power loss
iEngine stumbling or cutting out under high load
!!Limp mode activation
!!Risk of lean combustion and engine damage

Why does P0087 appear after tuning?

Frequently encountered at Stage 2 and Stage 3 power levels when fuel demand exceeds the capacity of the stock fuel system. The higher injector duty cycles and boost pressures require more fuel flow than the stock pump and lines can deliver.

How proper calibration can address P0087

WEREMAP Stage 2/3 calibrations are developed within the safe operating limits of the stock fuel system. For hardware-upgraded vehicles, fueling maps are adjusted to match the upgraded components.

Related Tuning Services

Relevant services for the system behind P0087

Stage 1Stage 2Stage 3DTC Off

Related Diagnostic Codes

Codes from the same diagnostic system as P0087

P0088Moderate Impact

Diagnostic Trouble Code P0088

Affected ECU Platforms

Bosch EDC17CP44Bosch EDC17CP14Bosch EDC17C74Bosch EDC17C64Bosch MD1CP001Bosch EDC17C53Delphi DCM6.2Bosch EDC17C79

Commonly Affected Vehicles

GWM(H5) Hover 5Bosch EDC17C53
SeatAlteaBosch EDC17C74
VWCrafterDelphi DCM6.2
DodgeRamBosch EDC17C79

Based on data from 4+ vehicle brands. P0087 is not limited to these models.

Frequently Asked Questions

What does P0087 mean?â–¼
The fuel pressure in the common rail or fuel rail is below the ECU-requested target pressure.
Why does P0087 appear after ECU tuning?â–¼
Frequently encountered at Stage 2 and Stage 3 power levels when fuel demand exceeds the capacity of the stock fuel system. The higher injector duty cycles and boost pressures require more fuel flow than the stock pump and lines can deliver.
How do you prevent P0087 during remapping?â–¼
WEREMAP Stage 2/3 calibrations are developed within the safe operating limits of the stock fuel system. For hardware-upgraded vehicles, fueling maps are adjusted to match the upgraded components.
Which vehicles are affected by P0087?â–¼
P0087 is commonly found on GWM, Seat, VW, Dodge vehicles equipped with Bosch EDC17CP44, Bosch EDC17CP14, Bosch EDC17C74, Bosch EDC17C64 ECU platforms.
What other codes appear alongside P0087?â–¼
P0087 frequently appears together with P0088. These related codes typically originate from the same system modification and should be addressed together in the calibration.

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