P2440
Secondary Air Injection System Switching Valve Stuck Open Bank 1
2002-2007 Buick Rendezvous 3.5L V6
Moderate SeverityPowertrainGeneric (SAE)
Description
The secondary air injection switching valve on bank 1 is stuck in the open position.
Symptoms
- Check engine light
- Failed emissions test
- Noise from air injection system
Common Causes
- Carbon deposits in valve
- Failed diaphragm
- Broken valve spring
- Vacuum supply issue
Diagnostic Steps
- Inspect valve operation
- Check vacuum supply
- Listen for air injection noise at idle
Repair Notes
Replace secondary air switching valve.
Related Codes
Other Powertrain Codes
- P0001Fuel Volume Regulator Control Circuit/Open
- P0002Fuel Volume Regulator Control Circuit Range/Performance
- P0003Fuel Volume Regulator Control Circuit Low
- P0004Fuel Volume Regulator Control Circuit High
- P0010Intake Camshaft Position Actuator Circuit/Open Bank 1
- P0011Intake Camshaft Position Timing Over-Advanced Bank 1
- P0012Intake Camshaft Position Timing Over-Retarded Bank 1
- P0013Exhaust Camshaft Position Actuator Circuit/Open Bank 1
- P0014Exhaust Camshaft Position Timing Over-Advanced Bank 1
- P0015Exhaust Camshaft Position Timing Over-Retarded Bank 1
P2440 on Other Vehicles
Common Questions
What does code P2440 mean on a 2002-2007 Buick Rendezvous?
P2440 stands for "Secondary Air Injection System Switching Valve Stuck Open Bank 1". The secondary air injection switching valve on bank 1 is stuck in the open position.
What are the symptoms of P2440 on a Buick Rendezvous?
Common symptoms of P2440 include: Check engine light, Failed emissions test, Noise from air injection system.
What causes P2440 on a 2002-2007 Buick Rendezvous?
Common causes of P2440 include: Carbon deposits in valve, Failed diaphragm, Broken valve spring, Vacuum supply issue.