Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET2006COBALT SS, 4D SEDAN, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 859 (ENGINE CONTROLS AND FUEL - 2.2L - DTC P0351 TO DTC P2544)DTC P0411CIRCUIT/SYSTEM TESTING
2006 Chevrolet Cobalt SS, 4D Sedan, Standard
Circuit/System Testing
2006 Chevrolet Cobalt SS, 4D Sedan, StandardSECTION Circuit/System Testing
WARNING: This page is about a different car, the 2010 Pontiac G5 and 2010 Chevrolet Cobalt. However, it is still accessible from the selected car via links, so may be relevant.
- Ignition OFF, remove the Secondary Air Injection Pump Relay.
- Verify that a test lamp illuminates between the Secondary Air Injection Pump Relay switch B+ circuit terminal 30 and ground.
- If the test lamp does not illuminate, test the ignition circuit for an open/high resistance. If the circuit tests normal and the relay switch ignition circuit fuse is open, test the controlled output circuit terminal 87 for a short to ground. If the circuit tests normal replace the Secondary Air Injection Pump.
- Connect the J-36169-HD:
Fused Jumper with a 40 A fuse between the AIR pump relay switch B+ circuit terminal 30 and the controlled output circuit terminal 87. The Secondary Air Injection Pump should turn ON.
- If the Secondary Air Injection Pump does not activate, test the controlled output circuit, and the AIR pump ground circuit, for an open/high resistance. If the circuits test normal, test or replace the Secondary Air Injection Pump.
- Inspect the AIR system for the following conditions:
- Hoses/pipes for a restriction or blockage
- Hoses/pipes for being disconnected
- Plugged AIR pressure sensor port
- Damaged AIR injection check valve
- If a condition is located, repair as necessary.
- If a condition is not located, and the AIR pump operates with no pressure change, replace the Secondary Air Injection Pump.
- If all circuits test normal, replace the Secondary Air Injection Pump Relay.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.