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P2440 Diagnostic Trouble Code Discussion for December 2009

Secondary Air Injection System Switching Valve Stuck Open


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Trouble Ticket Help Requests for DTC P2440
Help Request Posted
2005 Buick LaCrosse CX 3.8L MIL Lamp on VIN: 2G4WC53275
P2440: Secondary Air Injection System Control/Shut-Off Valve Stuck Open. Has Mil open, clear and always returns. Replace Valve and checked pipe to exhaust. No change. Pump works. Valve opens when commanded with scan tool.
December 09, 2009
2005 Buick LaCrosse CX 3.8L MIL Lamp on VIN: 2G4WC53275
P2440: Secondary Air Injection System Control/Shut-Off Valve Stuck Open. Has Mil open, clear and always returns. Replace Valve and checked pipe to exhaust. No change. Pump works. Valve opens when commanded with scan tool.
December 25, 2009
2005 Buick LaCrosse CX 3.8L MIL Lamp on VIN: 2G4WC53275
P2440: Secondary Air Injection System Control/Shut-Off Valve Stuck Open. Has Mil open, clear and always returns. Replace Valve and checked pipe to exhaust. No change. Pump works. Valve opens when commanded with scan tool.
December 09, 2009
2005 Buick LaCrosse CX 3.8L MIL Lamp on VIN: 2G4WC53275
P2440: Secondary Air Injection System Control/Shut-Off Valve Stuck Open. Has Mil open, clear and always returns. Replace Valve and checked pipe to exhaust. No change. Pump works. Valve opens when commanded with scan tool.
December 25, 2009