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 VARIANT/TRIMSECTION 19 (ENGINE CONTROLS - 2.0L - DTC P2101 TO DTC P2229)DTC P2123CONDITIONS FOR SETTING THE DTC
2006 Chevrolet Cobalt SS, 4D Sedan, Standard
Conditions for Setting the DTC
2006 Chevrolet Cobalt SS, 4D Sedan, StandardSECTION Conditions for Setting the DTC
WARNING: This page is about a different variant/trim than selected.
The PCM detects that the APP sensor 1 voltage is more than 4.65 volts for more than 0.4 seconds.
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.