P0122 2009 Ford Fusion Code - Throttle/Pedal Position Sensor 'A' Circuit Low Input

The common symptoms of code P0122 include reduced engine power, poor acceleration, stalling, rough idling, and the vehicle going into "limp mode."

OBDII code P0122 on a 2009 Ford Fusion indicates a low input signal from the throttle/pedal position sensor 'A' circuit.

Possible causes of code P0122 include a faulty throttle position sensor, damaged wiring or connectors in the sensor circuit, a corroded sensor ground, or a problem with the engine control module.

To diagnose code P0122, you can visually inspect the throttle position sensor and its wiring, test the sensor's voltage output, check for continuity in the sensor circuit, and scan the vehicle's computer for related error codes.

It is not recommended to drive your Ford Fusion with code P0122 as it can lead to unsafe driving conditions due to reduced engine power and potential stalling.

To repair code P0122, you may need to replace the throttle position sensor, repair or replace damaged wiring or connectors, clean or replace corroded sensor grounds, or reprogram the engine control module.

Resetting the code using a diagnostic scanner may temporarily clear the error code, but if the underlying issue causing code P0122 is not addressed, the code is likely to reappear.

While a dirty throttle body can affect the performance of the throttle system, it is not a common cause of OBDII code P0122. It is recommended to address the specific issues related to the throttle position sensor and its circuit.

The cost of fixing code P0122 can vary depending on the root cause of the issue. Replacing the throttle position sensor can cost between $100 to $200, while addressing wiring or module issues may require additional labor costs.

If you have the necessary tools, knowledge, and experience working on automotive systems, you may be able to diagnose and repair code P0122 yourself. However, it is recommended to consult a professional if you are unsure about the repair process.