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.
DTC P1122: Throttle Position Sensor Signal Higher Than Expected
Turn ignition switch on. Using scan tool, check throttle position. If throttle position is 12.9 percent, 0.6 volt (K20A2 engine) or 12.6 percent, 0.6 volt (K20A3 engine) or less when throttle is fully closed, problem is intermittent. System is functioning properly at this time. If throttle position is not as specified, replace throttle body (TP sensor not available separately).
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.