Toyota Error Code P1120: How to Fix It

Q: Can I still drive my Toyota with error code P1120?

You can drive short distances at low speeds, but the vehicle may enter limp mode with severely reduced power and acceleration. It's not safe for highway driving or normal operation until the issue is resolved.

Q: How much does it cost to fix Toyota error code P1120?

DIY repair costs range from $150-400 for a replacement accelerator pedal assembly. Professional repair typically costs $300-600 including parts and labor, depending on your Toyota model and local labor rates.

Q: What causes Toyota P1120 error code?

Common causes include a faulty accelerator pedal position sensor, corroded electrical connections, damaged wiring harness, or occasionally a malfunctioning engine control module. Physical damage to the accelerator pedal assembly can also trigger this code.

Q: Will P1120 cause my Toyota to fail emissions testing?

Yes, any active diagnostic trouble code like P1120 will typically cause your vehicle to fail emissions or inspection testing. The code must be resolved and the system must complete its readiness monitors before testing.

Q: How do I prevent Toyota P1120 from happening again?

Keep the accelerator pedal area clean and free of debris, avoid spilling liquids near the pedal assembly, and have regular maintenance performed to catch electrical issues early. Gentle operation of the accelerator pedal also helps extend sensor life.

Abstract

Toyota error code P1120 indicates a malfunction in the accelerator pedal position sensor circuit, which can cause poor acceleration, reduced power, or the vehicle going into limp mode. This sensor tells the engine control module how much you're pressing the gas pedal, so when it fails, your car's performance suffers significantly.