Parts for your 2006 Mazda Cx-7-Throttle position sensors

2006 Mazda CX-7 Throttle Position Sensor (TPS)

Based on Mazda technical documentation for the CX-7’s L3-VDT 2.3‑litre DISI turbo engine, the vehicle uses an electronic throttle control (drive‑by‑wire) throttle body that contains two throttle position sensors (often labelled TP1/TP2) for redundancy. The Mazda workshop manual and wiring diagrams show these TPS circuits feeding the PCM/ECU, and note the sensors are integrated into the throttle body assembly and not serviced separately. So yes, a throttle position sensor is fitted and relevant on the 2006 Mazda CX‑7.

The TPS in a CX‑7 does a simple but vital job: it tells the engine computer exactly how far the throttle plate is open. That live feedback helps the ECU manage fuel delivery, boost, idle speed and emissions, keeping the turbo four running crisply whether you’re easing out of a roundabout or overtaking on the motorway. Because it’s a drive‑by‑wire setup, accurate TPS feedback is essential for smooth throttle response and to avoid limp‑home behaviour.

On this model, the TPS is built into the electronic throttle body. If the sensor fails, the fix is typically to replace the complete throttle body and perform an idle/throttle relearn with a scan tool. A bit of preventive love goes a long way, though. During regular servicing:

• Have the throttle body inspected for carbon build‑up, gentle cleaning with the correct throttle‑safe cleaner can stabilise idle and reduce hesitation. Don’t force the throttle plate by hand.
• Check for fault codes like P0121, P0122, P0221, P2101 or P2110, and address wiring/connectors under the bonnet if there’s corrosion or a loose fit.
• If the battery’s been disconnected or the throttle body cleaned/replaced, complete the proper idle relearn so the ECU re‑adapts.

Common signs the TPS/throttle body needs attention include erratic idle, surging, a dead spot in throttle response, poor fuel economy, or the CX‑7 dropping into limp mode with the MIL on. Because the sensor is integral, DIY “sensor‑only” swaps don’t apply here, use a quality throttle body assembly that matches the L3‑VDT engine and a new gasket, then clear codes and relearn.

Most owners will never touch the throttle body until symptoms appear, but adding a throttle inspection/clean every 40–60,000 km as part of normal servicing in Aussie and Kiwi conditions is a smart move. It keeps drivability sharp and helps the ECU get the clean, reliable TPS feedback it relies on.

Popular questions about 2006 Mazda CX‑7 throttle position sensors

Where is the TPS on a 2006 CX‑7?
The throttle position sensors are built into the electronic throttle body mounted on the intake manifold, under the bonnet. You can’t replace the TPS separately, it’s part of the throttle body assembly.

Can a dirty throttle body cause TPS fault codes?
Yes. Heavy carbon build‑up can affect throttle plate movement and sensor readings, triggering drivability issues and codes. Proper cleaning and an idle/throttle relearn often restore normal operation if the hardware is sound.

Do I need to program anything after replacing the throttle body?
After fitting a new throttle body, a scan‑tool‑assisted throttle/idle relearn is recommended so the ECU aligns with the new sensor outputs. Some vehicles will self‑learn after a few drive cycles, but using a proper relearn speeds things up and avoids rough idle.