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Powertrain fault code

P0088: Fuel Rail/System Pressure - Too High

Stop and check

The engine may lose power or stall, which is dangerous in traffic. Avoid driving until it is checked.

What P0088 means

Fuel pressure in the rail is outside the expected range.

Common causes

  • Clogged fuel filter
  • Weak fuel pump
  • Faulty fuel pressure sensor or regulator
  • On diesels: high-pressure pump or injector leak-back

What to check first

  1. Do not keep driving if the car is losing power.
  2. Check whether the fuel filter is due for replacement.
  3. Have fuel pressure measured by a workshop.

Get P0088 explained for your car: $2.99

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Read your car's codes yourself, free

Plug a cheap ELM327 OBD-II adapter into the port under the dashboard and open the scan tool: Chrome or Edge on a computer with a USB adapter, or Chrome on Android with a Bluetooth LE adapter. It reads and clears codes and shows emissions readiness. It does not work on iPhone.

Open the free scan tool

Need help with P0088?

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Related codes

P0087

General guidance only, not a diagnosis. A qualified mechanic should confirm the cause before you replace parts.