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Home/DTC Codes/Chevrolet/Impala/2000-2005 3.4L V6/P0089
P0089

Fuel Pressure Regulator 1 Performance

2000-2005 Chevrolet Impala 3.4L V6

Moderate SeverityPowertrainGeneric (SAE)

Description

The fuel pressure regulator is not maintaining the commanded fuel pressure.

Symptoms

  • Check Engine Light
  • Fluctuating idle
  • Hesitation
  • Poor fuel economy

Common Causes

  • Faulty fuel pressure regulator
  • Vacuum line issue
  • Fuel pump weak
  • Restricted fuel supply

Diagnostic Steps

  1. Monitor fuel pressure at idle and under load
  2. Test vacuum line to regulator
  3. Check fuel pump output
  4. Inspect fuel lines

Repair Notes

Replace fuel pressure regulator.

Related Codes

P0087Fuel Rail/System Pressure - Too LowP0088Fuel Rail/System Pressure - Too High

Other Powertrain Codes

P0089 on Other Vehicles

Chevrolet Astro

1995-2005 4.3L V6 Vortec

Chevrolet Avalanche

2002-2006 5.3L V8 Vortec

Chevrolet Avalanche

2002-2006 8.1L V8 Vortec

Chevrolet Avalanche

2007-2013 5.3L V8 Vortec

Chevrolet Avalanche

2007-2013 6.0L V8 Vortec

Chevrolet Aveo

2012-2018 1.6L I4

Chevrolet Beat

2018-2021 1.2L I4

Chevrolet Beretta

1990-1996 2.2L I4

Common Questions

What does code P0089 mean on a 2000-2005 Chevrolet Impala?

P0089 stands for "Fuel Pressure Regulator 1 Performance". The fuel pressure regulator is not maintaining the commanded fuel pressure.

What are the symptoms of P0089 on a Chevrolet Impala?

Common symptoms of P0089 include: Check Engine Light, Fluctuating idle, Hesitation, Poor fuel economy.

What causes P0089 on a 2000-2005 Chevrolet Impala?

Common causes of P0089 include: Faulty fuel pressure regulator, Vacuum line issue, Fuel pump weak, Restricted fuel supply.

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