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Home/DTC Codes/Chevrolet/Impala/2000-2005 3.4L V6/P0021
P0021

Intake Camshaft Position Timing Over-Advanced Bank 2

2000-2005 Chevrolet Impala 3.4L V6

Moderate SeverityPowertrainGeneric (SAE)

Description

The intake camshaft timing for Bank 2 is more advanced than commanded.

Symptoms

  • Check Engine Light
  • Rough idle
  • Poor fuel economy
  • Stalling

Common Causes

  • Dirty oil/sludge
  • Stuck VVT solenoid
  • Worn phaser
  • Oil passage blockage

Diagnostic Steps

  1. Check oil condition
  2. Test VVT solenoid
  3. Monitor cam position
  4. Check timing chain

Repair Notes

Service VVT system Bank 2.

Related Codes

P0011Intake Camshaft Position Timing Over-Advanced Bank 1P0020Intake Camshaft Position Actuator Circuit/Open Bank 2P0022Intake Camshaft Position Timing Over-Retarded Bank 2

Other Powertrain Codes

P0021 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 P0021 mean on a 2000-2005 Chevrolet Impala?

P0021 stands for "Intake Camshaft Position Timing Over-Advanced Bank 2". The intake camshaft timing for Bank 2 is more advanced than commanded.

What are the symptoms of P0021 on a Chevrolet Impala?

Common symptoms of P0021 include: Check Engine Light, Rough idle, Poor fuel economy, Stalling.

What causes P0021 on a 2000-2005 Chevrolet Impala?

Common causes of P0021 include: Dirty oil/sludge, Stuck VVT solenoid, Worn phaser, Oil passage blockage.

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