For Shop Owners

P0009 BUICK - Engine Positions System Performance Bank 2

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3 What does this mean?

Possible causes

  • Engine mechanical problems
  • Incorrect timing chain
  • Stretched timing chain
  • Failed camshaft actuator or actuator solenoid
What does this mean?

Tech notes

There are factory service bulletins for the following Buick models:

2004-2006 Buick Rendezvous
2005-2008 Buick Lacrosse
2008 Buick Enclave
The service bulletin suggests replacing the primary drive and both secondary drive timing chains. Contact your Buick dealer for more information.

2007 Buick Allure
2007-2012 Buick LaCrosse
2008-2012 Buick Enclave

What does this mean?

When is the code detected?

The ECM detects that both camshafts on either bank of the engine are mis-aligned with the crankshaft for more than 4 seconds or a cumulative of 50 seconds.

Possible symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)

P0009 BUICK Description

The Engine Control Module (ECM) monitors the position of both camshafts and the crankshaft. The ECM performs a test for misalignment between both camshafts on one bank of the engine and the crankshaft. During the test the ECM learns the position of the camshafts and the crankshaft. While the engine is idling, the ECM compares the position of both the camshafts and the crankshaft with the learned value. The ECM will set the P0008 code if both learned values for one bank of the engine are exceeding a calibrated threshold in the same direction.
OBDII Code P0009 Buick - Engine Positions System Performance Bank 2 -

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P0009 BUICK Comments

Help us improve Leave a comment below or tell us if the information above help you fix the code. What are the symptoms on your vehicle for the P0009 Buick code? Have you replaced any parts?
Any information is appreciated. Thanks
Repair Importance Level: 3
1=Low 2=Medium 3=High
Repair Difficulty Level: 3
1=Easy 2=Moderate 3=Hard

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