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 705 (ENGINE CONTROL SYSTEM & FUEL SYSTEM - 2.2L (L61) - DTC P0016 TO DTC P0411)DTC P0101 OR P1101CIRCUIT/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 2008 Pontiac G5 and 2008 Chevrolet Cobalt. However, it is still accessible from the selected car via links, so may be relevant.
- Verify that DTC P0641 or P0651 is not set.
- If any of the DTCs are set, refer to DTC P0641 or P0651 .
- Verify that restrictions do not exist in the exhaust system. Refer to Restricted Exhaust .
- Engine operating at idle, observe the scan tool MAF Sensor parameter. The reading should be between 1,700-3,200 Hz, depending on the ECT.
- A wide open throttle (WOT) acceleration from a stop should cause the MAF Sensor parameter on the scan tool to increase rapidly. This increase should be from 2-6 g/s at idle to greater than 100 g/s at the time of the 1-2 shift.
- Use the scan tool and compare the MAF Sensor parameter to a known good vehicle under various operating conditions.
- Verify the proper operation of the MAP sensor. A skewed MAP sensor will cause the BARO value to be inaccurate. Refer to DTC P0106 .
- Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.
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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.