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.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSCHEVROLET2006COBALT SS, 4D SEDAN, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 547 (ENGINE CONTROLS AND FUEL - 3.9L - DTC P0420 TO DTC P3433)DTC P0442CIRCUIT/SYSTEM VERIFICATION
2006 Chevrolet Cobalt SS, 4D Sedan, Standard
Circuit/System Verification
2006 Chevrolet Cobalt SS, 4D Sedan, StandardSECTION Circuit/System Verification
WARNING: This page is about a different car, the 2007 Chevrolet Impala. However, it is still accessible from the selected car via links, so may be relevant.
- Verify the following conditions do not exist in the EVAP system:
- Loose, incorrect, missing, or damaged fuel fill cap
- Loose, missing, or damaged service port Schrader valve
- A damaged EVAP purge solenoid
- Disconnected, incorrectly routed, kinked, or damaged EVAP pipes and hoses
- A damaged EVAP vent valve or EVAP canister
- If you find any of the above conditions, repair as necessary.
- Remove the fuel fill cap. Connect the GE-41415-50
to the fuel tank filler neck. Connect the J 41413-200
to the GE-41415-50
.IMPORTANT: Refer to the J 41413-200 operation manual for detailed instructions.
- Calibrate the J 41413-200 Flow Meter to the correct leak orifice for the vehicle.
- Command the EVAP vent solenoid closed with a scan tool.
- Activate the J 41413-200
and compare the flow meter's stable floating indicator position to the red flag. The floating indicator should be below the red flag.
- If the floating indicator is above the red flag, test for a leak in the EVAP system.
- If the vehicle passes the Circuit/System Verification Test, then operate the vehicle within the conditions for running the DTC. You may also operate the vehicle within the conditions that are captured in the Freeze Frame/Failure Records List.
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
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.