Parts for your 2010 Mazda 6-Throttle position sensors

Throttle Position Sensors for the 2010 Mazda 6

Yes, the 2010 Mazda 6 uses throttle position sensing—just not as a separate, bolt-on “TPS” like older cable-throttle cars. According to the Mazda6 (GH) Workshop Manual (Fuel and Emission Control Systems – Electronic Throttle Control System) and Mazda Service Information for the GH series, the car runs an electronic throttle body with two integrated Throttle Position (TP) sensors. The PCM cross-checks TP Sensor No.1 and No.2 to manage throttle angle and will log DTCs such as P0121, P0122, P0123, P0221 and related faults if readings are out of range. In other words, the function is there—it’s just built into the throttle body assembly.

What does that mean for the driver? The TPS function tells the engine computer exactly how far the throttle plate is open, so it can nail the right fuel delivery, ignition timing and idle control. It also smooths shifts in autos and helps deliver decent fuel economy. If the dual sensors disagree, the PCM can drop the car into reduced-power mode to protect the engine and driveline.

For servicing, the TPS isn’t a scheduled replacement item on a 2010 Mazda 6. However, it pays to inspect and tidy up a few things during regular services:

• Clean the throttle body bore and plate with throttle-body-safe cleaner (don’t force the plate open, avoid soaking the electronics).
• Check the throttle body connector and loom for corrosion, oil wicking or damaged pins.
• Verify battery health and grounds—low voltage can trigger TP sensor codes.
• Scan for fault codes and live data (TP1/TP2 agreement and percentage) after any drivability complaint.

If the TPS function fails, Mazda’s workshop documentation treats the sensors as part of the electronic throttle body. Replacement typically means swapping the throttle body assembly rather than a standalone sensor. After replacement or a deep clean, perform an idle/TP relearn—ideally with a scan tool (PCM KAM reset and throttle/idle learn). If a scan tool isn’t available, a basic relearn that many techs use is to warm the engine fully, switch ignition off for a minute, then start and let it idle with all loads off for 5 minutes before driving gently through light to moderate throttle. Always use quality parts and a new gasket if the throttle body is removed.

Common symptoms of TPS-related issues include erratic idle, hesitation off the line, harsh shifts, cruise control drop-outs, and the MIL on with TP-related DTCs. Address them early to avoid limp-home hassles and keep the Mazda 6 running sweet as.

• Does the 2010 Mazda 6 have a separate, replaceable TPS?
  Not as a standalone part. The 2010 Mazda 6 (GH) uses an electronic throttle body with two internal TP sensors (TP1/TP2). The Mazda Workshop Manual and DTC diagnostics confirm this setup. If the TPS function fails, the usual fix is replacing the throttle body assembly rather than just a sensor.
• How do you reset or relearn the TPS after cleaning or replacing the throttle body?
  The best method is via a scan tool to perform a PCM/KAM reset and throttle/idle learn. Without a scan tool, many technicians warm the engine to operating temp, switch ignition off for a minute, then idle for about 5 minutes with all accessories off, followed by a gentle drive cycle. This helps the PCM relearn throttle and idle control.
• Can the TPS be cleaned on a 2010 Mazda 6?
  The sensors themselves are sealed inside the throttle body and aren’t serviceable. You can clean the throttle bore and plate with the correct cleaner, but avoid soaking the electronics or forcing the plate. If the sensor outputs are faulty, replacement of the throttle body is the reliable path.