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Home/DTC Codes/Chevrolet/Impala/2005-2005 3.4L V6/P0261
P0261

Cylinder 1 Injector Circuit Low

2005-2005 Chevrolet Impala 3.4L V6

Moderate SeverityPowertrainGeneric (SAE)

The 2005 Chevrolet Impala is equipped with a 3.4L V6 engine. Below you'll find detailed p0261 diagnostic code information including labor time estimates, cost ranges, and technician notes specific to this engine configuration.

Description

Low voltage in the cylinder 1 injector driver circuit.

Symptoms

  • Check Engine Light
  • Misfire cylinder 1
  • Rough idle

Common Causes

  • Short in injector wiring
  • Faulty injector
  • PCM driver issue

Diagnostic Steps

  1. Test injector resistance
  2. Check for shorts
  3. Test PCM output

Repair Notes

Repair wiring or replace injector.

Related Codes

P0201Injector Circuit/Open - Cylinder 1P0262Cylinder 1 Injector Circuit HighP0301Cylinder 1 Misfire Detected

Other Powertrain Codes

P0261 on Other Vehicles

Chevrolet Astro

1996-1996 4.3L V6 Vortec

Chevrolet Astro

1997-1997 4.3L V6 Vortec

Chevrolet Astro

1998-1998 4.3L V6 Vortec

Chevrolet Astro

1999-1999 4.3L V6 Vortec

Chevrolet Astro

2000-2000 4.3L V6 Vortec

Chevrolet Astro

2001-2001 4.3L V6 Vortec

Chevrolet Astro

2002-2002 4.3L V6 Vortec

Chevrolet Astro

2003-2003 4.3L V6 Vortec

Common Questions

What does code P0261 mean on a 2005-2005 Chevrolet Impala?

P0261 stands for "Cylinder 1 Injector Circuit Low". Low voltage in the cylinder 1 injector driver circuit.

What are the symptoms of P0261 on a Chevrolet Impala?

Common symptoms of P0261 include: Check Engine Light, Misfire cylinder 1, Rough idle.

What causes P0261 on a 2005-2005 Chevrolet Impala?

Common causes of P0261 include: Short in injector wiring, Faulty injector, PCM driver issue.

Last updated: March 2026

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