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 55 (ENGINE CONTROLS DIAGNOSIS - (DTC P0030 TO DTC P0157))
2006 Chevrolet Cobalt SS, 4D Sedan, Standard
Section 55 (Engine Controls Diagnosis - (DTC P0030 To DTC P0157))
2006 Chevrolet Cobalt SS, 4D Sedan, StandardSECTION Section 55 (Engine Controls Diagnosis - (DTC P0030 To DTC P0157))
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.
- Diagnostic Performance & Procedures
- DTC Table
- DTC P0030 or P0050: HO2S Heater Control Circuit Bank 1 Or 2 Sensor 1
- DTC P0031 or P0051: HO2S Heater Control Circuit Low Voltage Bank 1 Or 2 Sensor 1
- DTC P0032 or P0052: HO2S Heater Control Circuit High Voltage Bank 1 Or 2 Sensor 1
- DTC P0036 or P0056: HO2S Heater Control Circuit Bank 1 Or 2 Sensor 2
- DTC P0037 or P0057: HO2S Heater Control Circuit Low Voltage Bank 1 Or 2 Sensor 2
- DTC P0038 or P0058: HO2S Heater Control Circuit High Voltage Bank 1 Or 2 Sensor 2
- DTC P0101: Mass Air Flow (MAF) Sensor Performance
- DTC P0102: Mass Air Flow (MAF) Sensor Circuit Low Frequency
- DTC P0103: Mass Air Flow (MAF) Sensor Circuit High Voltage
- DTC P0112: Intake Air Temperature (IAT) Sensor Circuit Low Voltage
- DTC P0113: Intake Air Temperature (IAT) Sensor Circuit High Voltage
- DTC P0116: Engine Coolant Temperature (ECT) Sensor Performance
- DTC P0117: Engine Coolant Temperature (ECT) Sensor Circuit Low Voltage
- DTC P0118: Engine Coolant Temperature (ECT) Sensor Circuit High Voltage
- DTC P0121: Throttle Position (TP) Sensor Circuit Low Voltage
- DTC P0122: Throttle Position (TP) Sensor Circuit Low Voltage
- DTC P0123: Throttle Position (TP) Sensor Circuit High Voltage
- DTC P0125: Engine Coolant Temperature (ECT) Insufficient for Closed Loop Fuel Control
- DTC P0128: Engine Coolant Temperature (ECT) Below Thermostat Regulating Temperature
- DTC P0130 or P0150: HO2S Circuit Bank 1 Or 2 Sensor 1
- DTC P0132 or P0152: HO2S Circuit High Voltage Bank 1 Or 2 Sensor 1
- DTC P0133 or P0153: HO2S Slow Response Bank 1 Or 2 Sensor 1
- DTC P0134 or P0154: HO2S Circuit Insufficient Activity Bank 1 Or 2 Sensor 1
- DTC P0135 or P0155: HO2S Heater Performance Bank 1 Or 2 Sensor 1
- DTC P0137 or P0157: HO2S Circuit Low Voltage Bank 1 Or 2 Sensor 2
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.