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Fault P0088
Baileys Diesel • Dec 15, 2023
P0088 Fault Code: Fuel Rail/System Pressure – Too High
The P0088 code stands for “Fuel Rail/System Pressure – Too High,” which means the powertrain control module (PCM) has detected a fuel rail pressure or fuel pressure sensor voltage input that’s higher than the set specifications.
• Some possible causes of the P0088 code include a failed fuel pressure regulator or suction control valve, a faulty fuel pump (uncommon) and a restriction in the fuel system, also air in the fuel system
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• An illuminated check engine light, poor engine performance, and reduced fuel economy are some common symptoms of the P0088 code.
• P0088 can be caused by a faulty fuel rail pressure sensor, however this is less common and most of the time this can be confirmed by checking the rail pressure reading in the live data with the ignition on but the engine off, the rail pressure reading should be close to zero or possibly they will read atmospheric pressure.
• Injectors themselves will not cause p0088
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