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 42 (ENGINE CONTROLS - TROUBLESHOOTING & DIAGNOSIS)DIAGNOSTIC PERFORMANCE & PROCEDURESINSPECTION/MAINTENANCE (I/M) SYSTEM DTC TABLE
2006 Chevrolet Cobalt SS, 4D Sedan, Standard
Inspection/Maintenance (I/M) System DTC Table
2006 Chevrolet Cobalt SS, 4D Sedan, StandardSECTION Inspection/Maintenance (I/M) System DTC Table
WARNING: This page is about a different car, the 2005 Saturn L300. However, it is still accessible from the selected car via links, so may be relevant.
Inspection/Maintenance (I/M) System DTC Table
| System | DTCs Required to Set System Status to YES |
|---|---|
| Catalyst | DTC P0421 or P0431 |
| EVAP | DTC P0442 DTC P0446 DTC P0455 DTC P0496 |
| Oxygen Sensor | DTC P0130 or P0150 DTC P0132 or P0152 DTC P0133 or P0153 DTC P0134 or P0154 DTC P0137 or P0157 DTC P0138 or P0158 DTC P0139 or P0159 DTC P0140 or P0160 |
| Oxygen Sensor Heater | DTC P0135 or P0155 DTC P0141 or P0161 DTC P0030 or P0050 DTC P0031 or P0051 DTC P0032 or P0052 |
RENDER: 1.0x
NO RELATED
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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.