Parts for your 2011 Mazda 6-Throttle position sensors

2011 Mazda 6 throttle-position-sensors

Based on Mazda’s GH-series Workshop Manual (2008–2012) and Mazda Service Information (MS3), the 2011 Mazda 6 uses an electronic throttle body with two built-in throttle-position-sensors (TPS), along with dual accelerator pedal position sensors. These TPS units are integral to the throttle body and provide redundant feedback to the engine control module (ECM), so the part is absolutely relevant on this model. They’re not a separate, cable-era bolt-on sensor, replacement typically means replacing the complete throttle body assembly.

On a 2011 Mazda 6, the throttle-position-sensors tell the ECM exactly how far the throttle plate is open so it can meter fuel, spark timing, and idle control. With drive-by-wire, the ECM compares the driver’s pedal input to the throttle body’s actual position using two TPS tracks. If the readings disagree, it can trigger failsafe (limp) mode to protect the engine and occupants. That redundancy is why owners might see paired sensor-related fault codes when there’s a problem.

There’s no scheduled replacement for throttle-position-sensors on this car, but sensible servicing helps. During routine maintenance (say every 60,000 km), technicians often inspect the throttle body for carbon build-up that can skew TPS readings at tiny openings and cause rough idle or stalling. If cleaning is needed, the throttle plate and bore should be carefully cleaned with throttle-safe cleaner while keeping solvents away from the TPS housing and motor. Electrical connectors should be checked for moisture or corrosion and treated with suitable contact cleaner only—no soaking.

If the TPS fails on this model, the fix is generally a new throttle body assembly with gasket. After refit, an idle/throttle relearn is recommended. Mazda workshop procedures call for performing an electronic relearn with a scan tool, in a pinch, a manual key-on/engine-off, key-off, then stable-idle routine may work, but a proper scan-tool routine is best for a smooth idle and correct tip-in. Symptoms that suggest TPS issues include an illuminated check engine light, poor throttle response, surging, unexpected idle changes, or limp mode. Common codes include P0121–P0123/P0221–P0223 and, when the actuator is affected, P2101/P2110/P2111/P2112. Given the TPS is built-in, parts selection matters—quality OE or equivalent throttle bodies maintain the dual-sensor accuracy the ECM expects.

• Key tip: After any throttle body work, allow the engine to reach operating temperature at idle with accessories off before road-testing.

Does the 2011 Mazda 6 have a separate throttle-position-sensors?
It has throttle-position-sensors, but they’re integrated into the electronic throttle body with two tracks for redundancy, not a separate stand-alone sensor. Replacement normally means swapping the entire throttle body assembly and performing a relearn.

Which fault codes point to a TPS issue on a 2011 Mazda 6?
Typical codes include P0121, P0122, P0123 (TPS range/performance/low/high) and P0221–P0223 for the second track. Throttle actuator-related codes like P2101, P2110, P2111, and P2112 can also appear if the ECM sees a mismatch between commanded and actual throttle position.

Is calibration needed after replacing the throttle body?
Yes. Mazda procedures specify an idle/throttle relearn using a scan tool. A manual relearn may stabilise idle, but the scan-tool routine gives the best result. Expect a short idle period at operating temperature before driving to complete adaptation.