2021 Polestar P0087: What It Means & Is It Safe to Drive?

P0087 on the 2021 Polestar: Fuel Rail/System Pressure – Too Low. Here's what it means, what usually causes it, what repairs typically cost, and whether it's safe to keep driving.

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What this code means

The actual fuel rail pressure is lower than the PCM commanded. On direct-injection engines the high-pressure fuel pump is the primary suspect; on port injection engines the lift pump or filter is most common.

Common causes on the 2021 Polestar

  • Failing high-pressure fuel pump (direct injection engines)
  • Weak low-pressure lift pump
  • Clogged or restricted fuel filter
  • Leaking fuel pressure regulator
  • Restricted fuel supply line

Symptoms

  • Check Engine Light
  • Hard starting, especially when hot
  • Stalling or stumbling under load or acceleration
  • Rough idle

Typical fixes

  • Replace high-pressure fuel pump (GDI engines)
  • Replace low-pressure (in-tank) fuel pump
  • Replace fuel filter
  • Inspect and replace fuel pressure regulator

Repair cost range

For a 2021 Polestar, repairs for P0087 typically fall between $200 and $1200, depending on the root cause and labor rates in your area.

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