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P0088 on BMW — Fuel Rail/System Pressure Too High

BMW

Verified1 source
1 source
  • Official data (NHTSA)official_feed

What P0088 means

Caution — monitor closely

High-pressure rail pressure reads above spec. On BMW direct-injection engines this usually points to a faulty pressure regulator or a control-module calibration mismatch after a fuel-pump repair.

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General information, not a diagnosis or repair instruction. Always confirm with a qualified mechanic for your specific vehicle.

Common causes

  • Faulty fuel pressure regulator

Symptoms

  • Gasoline smell
  • Повышенный расход топлива
  • Increased fuel consumption

What to check first

  1. Scan-tool live rail pressure check
  2. Verify DME software is at the latest calibration
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