Mazda Error Code P1125: How to Fix It

Q: What causes Mazda error code P1125?

P1125 is typically caused by a faulty throttle position sensor, corroded electrical connections, damaged wiring, or carbon buildup affecting throttle plate movement. Intermittent connections are the most common cause.

Q: Can I drive with code P1125?

You should avoid driving with P1125 as it can cause unpredictable engine behavior, stalling, or poor acceleration. The intermittent nature makes it potentially dangerous, especially in traffic situations.

Q: How much does it cost to fix P1125?

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

Q: Will P1125 cause my Mazda to fail emissions testing?

Yes, P1125 will likely cause your vehicle to fail emissions testing since it indicates a problem with the engine management system. The code must be resolved and the system must complete its readiness monitors.

Q: How do I prevent P1125 from happening again?

Regular maintenance including cleaning the throttle body, protecting electrical connections from moisture, and addressing engine performance issues promptly can help prevent TPS problems. Quality replacement parts also reduce the likelihood of premature failure.

Abstract

Mazda error code P1125 indicates an intermittent throttle position sensor (TPS) problem, which can cause irregular engine performance, stalling, or poor acceleration. This issue occurs when the TPS sends inconsistent signals to the engine control module, disrupting proper fuel and air mixture calculations.