Parts for your 2007 Mazda Axela-Throttle position sensors

2007 Mazda Axela throttle-position-sensors

Technical service material confirms the 2007 Mazda Axela (BK series) uses an electronic throttle body with an internal, dual-track throttle position (TP) sensor. Mazda’s BK Workshop Manual (Engine Control – Electronic Throttle Control) specifies the TP sensor is integral to the throttle body and not serviced separately, and related diagnostic sections list TP/APP DTCs such as P0121–P0123 and P0221–P0223. This makes a throttle-position sensor absolutely relevant on the 2007 Axela.

On a 2007 Mazda Axela, the throttle-position sensor lives inside the electronic throttle body and constantly tells the ECU exactly how far the throttle plate is open. Working alongside the accelerator pedal position sensor, it helps the car deliver smooth take-off, crisp response, and the right air–fuel mix. Because it’s a safety-critical input, Mazda uses a dual-track design so the ECU can cross-check the signals. If they don’t agree, it’ll throw a light or drop into limp mode to protect the engine and driver.

There’s no separate TPS to swap on this model, it’s built into the throttle body. That said, sensible servicing goes a long way. At major services (say every 60,000–80,000 km), a technician will usually:

• Inspect the throttle body and ducting for oil vapour build-up and clean the bore and plate with a throttle-safe cleaner (no harsh solvents).
• Check the TP connector and loom under the bonnet for chafing, moisture, or green corrosion on pins.
• Confirm healthy battery/charging voltage, as low volts can cause flaky throttle signals.
• Perform a throttle/idle learn after cleaning or any battery disconnect to let the ECU re-home the plate.

When faults show up, owners often report erratic idle, hesitation on tip-in, poor fuel economy, or the MIL with codes like P0121–P0123 (TP sensor range/performance) or P0221–P0223. Because the sensor is sealed inside the housing, replacement means fitting a complete throttle body assembly. Best practice is to install a new gasket, torque the mounting bolts to spec, ensure the bore is spotless, and then carry out the throttle relearn with a scan tool. For many BK engines (LF/L3/ZY), a basic key-on/engine-idle relearn can work in a pinch: key on for ~30 seconds, start and let it idle undisturbed until warm, then a gentle drive so the ECU trims settle. A scan-tool routine is the tidy option.

A quick tip: never force the throttle plate open by hand on the bench. Let the motor do the work to avoid damaging the gearset or sensor tracks. With clean airflow, sound wiring, and a proper relearn after any work, the Axela’s electronic throttle and TPS are usually set-and-forget for years.

Popular questions

Does the 2007 Mazda Axela have a separate TPS I can replace?
No. On the BK Axela the throttle-position sensor is built into the electronic throttle body. If the TP circuit is faulty after wiring checks and cleaning, the fix is typically a complete throttle body replacement. It’s worth testing the accelerator pedal position sensor and loom first, as those can trigger similar codes.

What are the signs of a failing TPS on a 2007 Axela?
Common clues include a check engine light with codes like P0121–P0123 or P0221–P0223, stumble off idle, hunting or high idle, poor fuel use, and limp-home behaviour. Rule out vacuum leaks and a dirty throttle first, then look at live TP/APP data to confirm signal glitches before replacing parts.

Does the throttle body need a relearn after cleaning or replacement?
Yes. The ECU needs to relearn the throttle plate’s home and idle airflow. A scan-tool relearn is ideal, but a basic procedure (key on for ~30 seconds, start, let it idle until warm, then a gentle drive) often restores stable idle and response. Skipping this step can leave the idle rough or the pedal feel a bit off.