Lexus Acura Error Code P1121: How to Fix It

Q: Can I drive with P1121 error code?

It's not recommended to drive with P1121 as it can cause unpredictable acceleration, reduced power, or engine stalling. If you must drive, do so carefully at low speeds and get it repaired immediately.

Q: How much does it cost to fix P1121?

Repair costs typically range from $150-400 for a pedal position sensor replacement, or $50-150 if it's just a wiring issue. Professional diagnosis usually costs $100-150.

Q: Will P1121 cause my car to fail emissions testing?

Yes, P1121 will likely cause your vehicle to fail emissions testing since it affects engine performance and the check engine light will be illuminated.

Q: What causes pedal position sensor failure?

Common causes include normal wear over time, moisture or corrosion in electrical connections, physical damage to the pedal assembly, or contamination from spilled liquids in the driver's area.

Q: How long does a pedal position sensor last?

Pedal position sensors typically last 100,000-150,000 miles under normal driving conditions, though this can vary based on driving habits and environmental factors.

Abstract

Error code P1121 indicates a problem with your vehicle's pedal position sensor performance, which monitors accelerator pedal position and sends signals to the engine control module. This high-severity error can cause poor acceleration, rough idling, or reduced engine power. Following these diagnostic steps can help identify and resolve the underlying issue.