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 58 (ENGINE CONTROLS DIAGNOSIS - (DTC P0446 TO DTC P2100))
2006 Chevrolet Cobalt SS, 4D Sedan, Standard
Section 58 (Engine Controls Diagnosis - (DTC P0446 To DTC P2100))
2006 Chevrolet Cobalt SS, 4D Sedan, StandardSECTION Section 58 (Engine Controls Diagnosis - (DTC P0446 To DTC P2100))
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 P0446: EVAP Vent System Performance
- DTC P0449: EVAP Vent Solenoid Control Circuit
- DTC P0451: FTP Sensor Performance
- DTC P0452: FTP Sensor Circuit Low Voltage
- DTC P0453: Sensor Circuit High Voltage
- DTC P0455: EVAP System Large Leak Detected
- DTC P0458: EVAP Purge Solenoid Control Circuit Low Voltage
- DTC P0459: EVAP Purge Solenoid Control Circuit High Voltage
- DTC P0496: EVAP System Flow During Non-Purge
- DTC P0498: EVAP Vent Solenoid Control Circuit Low Voltage
- DTC P0499: EVAP Vent Solenoid Control Circuit High Voltage
- DTC P0506: Idle Speed Low
- DTC P0507: Idle Speed High
- DTC P0601 To P0607, P1600, P1621, P1627, P1680, P1681, P1683 or P2610: Control Module Malfunction(s)
- DTC P0627: Fuel Pump Relay Control Circuit Open
- DTC P0628: Fuel Pump Relay Control Circuit Low Voltage
- DTC P0629: Fuel Pump Relay Control Circuit High Voltage
- DTC P0638: Throttle Actuator Control (TAC) Command Performance
- DTC P0700: Transmission Control Module (TCM) Requested MIL Illumination
- DTC P1245: Intake Manifold Runner Control (IMRC) Solenoid Control Circuit
- DTC P1551: Throttle Valve Rest Position Not Reached During Learn
- DTC P2008: Intake Manifold Runner Control (IMRC) Solenoid Control Circuit
- DTC P2009: Intake Manifold Runner Control (IMRC) Solenoid Control Circuit Low Voltage
- DTC P2010: Intake Manifold Runner Control (IMRC) Solenoid Control Circuit High Voltage
- DTC P2100: Throttle Actuator Control (TAC) Motor Control Circuit
RENDER: 1.0x
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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.