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Code

P0089

Fuel

Fuel pressure regulator performance

The fuel pressure is outside the expected range.

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Most likely causes

Faulty regulator
Weak pump
Clogged filter

Symptoms you may notice

Check engine light
Hard start
Poor power

Checks to run

Test pressure hold
Check the regulator
Inspect the filter

Tools you may need

Fuel pressure gauge

Always diagnose before replacing. Codes share symptoms; confirm the cause with measurements before buying parts.

Related codes in Fuel

Fuel rail pressure too low

Fuel rail pressure too high

Fuel pump primary circuit malfunction

Fuel rail pressure sensor range / performance

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