Mazda Error Code P1124: How to Fix It

Q: Can I drive my Mazda with P1124 error code?

You can drive short distances, but the vehicle may experience poor acceleration, rough idling, and reduced fuel economy. It's recommended to fix this issue promptly to prevent potential engine damage and ensure safe operation.

Q: How much does it cost to fix P1124 on a Mazda?

DIY repair costs $50-150 for a new TPS. Professional repair typically costs $200-400 including parts and labor, depending on your Mazda model and local labor rates.

Q: What causes P1124 code in Mazda vehicles?

Common causes include a faulty throttle position sensor, damaged wiring harness, corroded electrical connections, carbon buildup in the throttle body, or rarely, a malfunctioning PCM.

Q: How do I know if my TPS is bad?

Symptoms include erratic idle, hesitation during acceleration, poor fuel economy, and the check engine light. A multimeter test showing incorrect or unstable voltage readings confirms TPS failure.

Q: Will P1124 cause my Mazda to fail emissions testing?

Yes, P1124 will likely cause your vehicle to fail emissions testing. The error code must be resolved and the system must complete its readiness monitors before passing emissions.

Abstract

Mazda error code P1124 indicates the Throttle Position Sensor (TPS) is reading outside the acceptable range during self-test, specifically on the high side. This can cause poor acceleration, rough idling, and reduced fuel economy.