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.
Circuit/System Verification
2008 Chevrolet Aveo LT, AutomaticSECTION Circuit/System Verification
- Ignition ON, observe the DTC information with a scan tool. Verify DTCs P0122, P0123, P0222, or P0223 should not set.
- If any of the DTCs are set refer to DTC P0122, P0123, P0222, P0223, or P2135 (w/TAC) or DTC P0122, P0123, P0222, P0223, or P2135 (wo/TAC) for further diagnosis.
- Ignition ON, observe the scan tool TP Sensor percentage parameters with a scan tool. Verify the scan tool TP sensor parameters are between 7-21 percent.
- If not within the specified range, refer to DTC P0122, P0123, P0222, P0223, or P2135 (w/TAC) or DTC P0122, P0123, P0222, P0223, or P2135 (wo/TAC) for further diagnosis.
- Rapidly depress the accelerator pedal from the rest position to the wide open throttle position (WOT) and release pedal. Repeat the procedure several times. DTCs P1516, P2101, or P2119 should not set.
- If DTCs P0122, P0123, P0222, P0223, or P2135 set while performing this procedure, refer to DTC P0122, P0123, P0222, P0223, or P2135 (w/TAC) or DTC P0122, P0123, P0222, P0223, or P2135 (wo/TAC) for further diagnosis.
- Slowly depress the accelerator pedal to WOT and then slowly return the pedal to closed throttle. Repeat the procedure several times. DTCs P1516, P2101, or P2119 should not set.
- If DTCs P0122, P0123, P0222, P0223, or P2135 set while performing this procedure, refer to DTC P0122, P0123, P0222, P0223, or P2135 (w/TAC) or DTC P0122, P0123, P0222, P0223, or P2135 (wo/TAC) for further diagnosis.
- 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.