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 MANUALSPONTIAC2006WAVE BASE, 4D SEDAN, Y4M/MLMREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCESYSTEMENGINE CONTROLS - 1.6L (L91) - DTC P2104 TO DTC P2282DTC P2122, P2123, P2127, P2128, OR P2138CONDITIONS FOR RUNNING THE DTC
2006 Pontiac Wave Base, 4D Sedan, Y4M/MLM
Conditions for Running the DTC
2006 Pontiac Wave Base, 4D Sedan, Y4M/MLMSECTION Conditions for Running the DTC
DTCs P2122, P2123
- DTC P0641 is not set.
- The ignition is ON or the engine is operating.
- The DTCs run continuously when the above conditions are met.
DTCs P2127, P2128
- DTC P0651 is not set.
- The ignition is ON or the engine is operating.
- The DTCs run continuously when the above conditions are met.
DTC P2138
- The ignition is ON or the engine is operating.
- The DTC runs continuously when the above condition is met.
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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.