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 56 (ENGINE CONTROLS DIAGNOSIS - (DTC P0136 TO DTC P0443))
2006 Chevrolet Cobalt SS, 4D Sedan, Standard
Section 56 (Engine Controls Diagnosis - (DTC P0136 To DTC P0443))
2006 Chevrolet Cobalt SS, 4D Sedan, StandardSECTION Section 56 (Engine Controls Diagnosis - (DTC P0136 To DTC P0443))
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.
- DTC Tests
- DTC Table
- DTC P0138 or P0158: HO2S Circuit High Voltage Bank 1 Or 2 Sensor 2
- DTC P0139 or P0159: HO2S Slow Response Bank 1 Or 2 Sensor 2
- DTC P0140 or P0160: HO2S Circuit Insufficient Activity Bank 1 Or 2 Sensor 2
- DTC P0141 or P0161: HO2S Heater Performance Bank 1 Or 2 Sensor 2
- DTC P0171 or P0174: Fuel Trim System Lean Bank 1 Or 2
- DTC P0172 or P0175: Fuel Trim System Rich Bank 1 Or 2
- DTC P0201 To P0206: Injector(s) Control Circuit
- DTC P0221: Throttle Position (TP) Sensor(s) Malfunction(s)
- DTC P0222: Throttle Position (TP) Sensor 2 Circuit Low Voltage
- DTC P0223: Throttle Position (TP) Sensor 2 Circuit High Voltage
- DTC P0261, P0264, P0267, P0270, P0273 or P0276: Control Circuit Low Voltage
- DTC P0262, P0265, P0268, P0271, P0274 or P0277: Control Circuit High Voltage
- DTC P0300: Engine Misfire Detected
- DTC P0301 to P0306: Specific Cylinder Misfire Detected
- DTC P0313: Misfire Detected with Low Fuel Level
- DTC P0324: Knock Sensor (KS) Module Performance
- DTC P0327 or P0332: Knock Sensor (KS) Circuit Low Voltage Bank 1 Or 2
- DTC P0328 or P0333: Knock Sensor (KS) Circuit High Voltage Bank 1 Or 2
- DTC P0335: Crankshaft Position (CKP) Sensor Circuit
- DTC P0341: Camshaft Position (CMP) Sensor Performance
- DTC P0342: Camshaft Position (CMP) Sensor Circuit Low Voltage
- DTC P0343: Camshaft Position (CMP) Sensor Circuit High Voltage
- DTC P0421 or P0431: Warm-Up Catalyst Low Efficiency Bank 1 Or 2
- DTC P0442: EVAP System Small Leak Detected
- DTC P0443: EVAP Purge Solenoid Control Circuit
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.