Parts for your 2014 Mazda Premacy-Throttle position sensors

2014 Mazda Premacy throttle-position-sensor: what it does and how to look after it

Based on Mazda’s own technical documentation, the 2014 Mazda Premacy (CW series, also known as Mazda5) definitely uses a throttle position sensor. It’s built into the electronic throttle body as dual sensors (often called TP1/TP2) and isn’t sold separately. This is noted in the Mazda 5 (CW) Workshop Manual sections covering the Electronic Throttle Control System, throttle body component description, DTC diagnostics for P0121–P0123/P0221–P0223, and the engine control wiring diagram showing the TP sensor circuits. The Mazda Electronic Parts Catalogue also lists the throttle body assembly as a complete unit with no stand‑alone TPS listing, confirming it’s integrated and non‑serviceable on its own.

On this Premacy, the throttle-position-sensor’s job is to tell the engine control module exactly how far the throttle plate is open. With an electronic throttle (no old-school cable), the ECU compares the pedal sensors with the two throttle position signals to control air, fuel, ignition, idle speed, cruise control and even stability/traction functions. Running two TPS tracks provides redundancy and cross-checks, so the car can spot faults quickly and keep things safe.

If the TPS data goes out of whack, drivers may see a check engine light, sluggish response, high or unstable idle, limp mode, or codes like P0121/P0122/P0123 and their P022x counterparts. Because the TPS is part of the throttle body, the fix for a failed sensor is to replace the throttle body assembly and then carry out the throttle/idle learn procedure with a scan tool as per the Mazda Workshop Manual. Before replacing anything, it’s smart to inspect the connector, confirm a clean 5 V reference and ground, and compare APP (pedal) and TP (throttle) live data with a decent scan tool.

• Good practice during servicing: keep the intake air filter fresh, check for oil or moisture in the throttle connector, and ensure battery voltage and earths are healthy.
• Throttle body cleaning can help sticky idle issues, but it won’t repair a failing internal sensor. Don’t force the throttle plate by hand, use proper cleaning technique with the ignition off and allow the ECU to relearn.
• If replacement’s needed, fit a quality throttle body with a new gasket, clear codes, and perform the prescribed relearn so idle and tip-in feel are spot on.

Looked after this way, the Premacy’s integrated TPS keeps throttle behaviour smooth, fuel use tidy and drivability consistently good across Aussie and Kiwi roads.

Popular questions about 2014 Mazda Premacy throttle position sensors

Does the 2014 Mazda Premacy have a separate TPS I can replace?
No. The TPS is built into the electronic throttle body as dual tracks. If the TPS fails, the usual repair is to replace the throttle body assembly and carry out the throttle/idle relearn with a scan tool. Mazda’s parts listings don’t show a separate TPS for this model.

What symptoms point to a dodgy TPS on a 2014 Premacy?
Common signs include hesitant or jerky acceleration, unstable idle, sudden limp mode, and a check engine light with codes like P0121–P0123 or P0221–P0223. Scan tool data that shows mismatched or erratic TP1/TP2 signals is a giveaway.

Can cleaning fix a TPS fault on this car?
Cleaning can help if the throttle plate is sticking due to deposits, but it won’t fix an internal sensor fault. If live data or DTCs confirm a TPS issue, plan on replacing the throttle body and performing the relearn procedure to restore proper operation.