Parts for your 2006 Mazda Axela-Throttle position sensors

2006 Mazda Axela Throttle Position Sensor (TPS) — What It Does and How to Look After It

Based on Mazda’s factory Workshop Manual for the 2004–2009 Mazda3/Axela (BK series) and Mazda technical training materials on the Throttle Actuator Control (TAC) system, the 2006 Mazda Axela absolutely uses a throttle position sensor. In this model, the TPS is integrated into the electronic throttle body alongside the throttle actuator motor, with dual sensor tracks for redundancy. The presence of Mazda OBD-II diagnostic trouble codes such as P0122/P0123 (Throttle Position Sensor Circuit) and P0222/P0223/P2135 (Throttle/Pedal Position Correlation) further confirms that the TPS is a fitted and critical component on this vehicle.

The throttle position sensor on a 2006 Mazda Axela tells the engine control unit exactly how far the throttle plate is open. Because this Axela runs an electronic, drive-by-wire throttle, the ECU compares the driver’s pedal input with the TPS feedback to control airflow, fuel delivery, ignition timing and, on autos, shift behaviour. That accuracy keeps cold starts smooth, acceleration crisp and fuel economy tidy on the open road.

When the TPS starts playing up, the car can feel doughy off the mark, idle might wander, cruise control may drop out, fuel use can creep up and the check engine light will likely come on. Common Mazda fault codes for TPS issues include P0122, P0123, P0222, P0223 and P2135.

On this Mazda, the TPS is part of the throttle body assembly rather than a separate bolt-on sensor. That means most repairs involve cleaning or replacing the whole throttle body. Smart servicing includes:

• Periodic throttle body cleaning to remove carbon that can skew TPS readings.
• Checking the harness and connector for corrosion, loose pins or rub-through.
• Scanning live data to confirm TP1/TP2 tracks agree and sit within the expected voltage range at closed and wide-open throttle.

If replacement’s on the cards, choose a quality throttle body (with gasket), and follow workshop procedures. Typical steps include disconnecting the battery, removing the intake duct, unplugging the connector, swapping the unit with a fresh gasket and refitting carefully. Afterwards, perform an idle/throttle relearn with a scan tool or by following the specified key-on/engine-off and idle routine so the ECU can recalibrate the blade position. Avoid forcing the throttle plate by hand, and don’t overtighten mounting bolts—warping the body can cause binding and repeat faults. A brief drive cycle with gentle accel/decel helps the ECU settle trims for smooth take-offs and stable idle. When serviced properly, the integrated TPS and throttle body keep the Axela feeling lively and predictable across town and on long Kiwi and Aussie kilometres.

Signs the Axela’s TPS/throttle body needs attention:

• Hesitation or surging on light throttle
• Unstable idle or stalling when parking
• Poor fuel economy and a lit check engine lamp

Recommended check interval: Inspect data and cleanliness during routine services, particularly if driving mainly short trips.

FAQs

Does the 2006 Mazda Axela have a separate TPS or is it built into the throttle body?
The TPS is integrated into the electronic throttle body along with the actuator motor. On most 1.5, 2.0 and 2.3 petrol variants, the sensor isn’t sold separately, replacement typically means fitting a complete throttle body assembly. Always verify by VIN and part number before ordering.

How does one relearn the throttle after cleaning or replacing the throttle body?
Use a capable scan tool to run the throttle/idle learn procedure if available. If not, many workshops use a key-on/engine-off cycle, followed by a warm idle and a short drive with gentle throttle inputs so the ECU can relearn blade position and airflow. If idle remains unstable, check for intake leaks and confirm TP1/TP2 correlation on a scan tool.

Which fault codes point to TPS issues on a 2006 Axela?
Common codes include P0122/P0123 (Throttle Position Sensor Circuit Low/High), P0222/P0223 (Throttle Position Sensor 2 Circuit Low/High) and P2135 (Throttle/Pedal Position Sensor Correlation). These indicate the ECU has detected out-of-range or mismatched signals and will often trigger limp mode to protect the engine.