Can high fuel pressure damage the engine?

Yes — excessively high fuel pressure causes rich running, fouled plugs, and can damage the catalytic converter.

What regulates fuel pressure?

The fuel pressure regulator (on the fuel rail or in the fuel pump module) maintains correct pressure.

Medium Severity

Fuel System

Fuel rail pressure sensor reads higher than expected.

Common Fix

Replace fuel pressure sensor

Estimated Cost (DIY)

$30 - $80

Faulty sensorlikely

High fuel pressure (bad regulator)possible

Short in wiringpossible

Need to read or clear this code?

Can high fuel pressure damage the engine?: Yes — excessively high fuel pressure causes rich running, fouled plugs, and can damage the catalytic converter.
What regulates fuel pressure?: The fuel pressure regulator (on the fuel rail or in the fuel pump module) maintains correct pressure.

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