Parts for your 2017 Ford Transit-Throttle position sensors

2017 Ford Transit throttle-position-sensors (TPS)

Based on Ford technical literature, the 2017 Ford Transit does use throttle-position sensing—it's just built into the electronic throttle body (ETB) rather than a separate, bolt-on sensor. The Ford Workshop Manual for Transit (2015–2019) outlines Electronic Throttle Control with two internal TPS tracks (often called TP1 and TP2) inside the throttle body, and Ford wiring diagrams label these signals the same way. Motorcraft parts listings for the 2017 Transit show the throttle body assembly supplied with the motor and integrated TPS. That means on petrol V6s (3.7 Ti‑VCT and 3.5 EcoBoost) and on diesel variants (such as the 3.2), the TPS function is present, but the service part is the complete throttle body/intake throttle valve unit, not a standalone sensor.

On a 2017 Ford Transit, the throttle-position-sensors tell the engine computer exactly how far the throttle plate is open, so it can match air, fuel, spark, and transmission behaviour smoothly. With drive-by-wire, the accelerator pedal sends a request, and the ETB—with its dual, self-checking TPS—does the precise work. That’s how the van stays smooth in traffic, holds idle cleanly under the bonnet fan load, and avoids flat spots under load out on the motorway.

For servicing, there’s no routine replacement interval for the TPS, attention is usually part of throttle body care. If the van shows hesitation, erratic idle, a “wrench” light, or codes like P0121/P0122/P0123/P2135, it’s time to inspect. Because the TPS is integrated, technicians typically:

• Check the ETB electrical connector for corrosion, bent pins, or chafed wiring near the intake.
• Lightly clean carbon from the throttle bore with approved throttle-body cleaner—don’t force the plate by hand, and don’t drown the motor/sensor area.
• If faults persist, replace the throttle body assembly. Inspect the gasket/O-ring and replace if nicked or flattened.
• Perform an idle relearn after battery disconnection or throttle body replacement. A simple method is to start, let it idle with all accessories off for a few minutes until stable, then run with A/C on, and take a short mixed drive so the PCM adapts. A scan tool “ETC Relearn” is ideal where available.

Because Ford uses dual TPS tracks for safety, mismatches between TP1 and TP2 can trigger limp-home. That’s a clue to look at connector integrity and the throttle body rather than the accelerator pedal. With quality parts and a proper relearn, most Transits rack up the kilometres without throttle dramas.

Is the TPS a separate replaceable part on a 2017 Transit?

No. Ford integrates the throttle-position-sensors into the electronic throttle body. If diagnosis confirms a TPS fault, the fix is to replace the throttle body assembly. The parts catalogues and the workshop manual both describe the TPS as internal to the unit.

Where is the TPS located on this model?

It’s inside the throttle body on the intake, ahead of the manifold. On petrol V6s, look under the bonnet at the alloy throttle body with the black motor housing and multi-pin connector. On diesel variants, the intake throttle valve assembly in a similar spot houses the sensor function.

Do they need a relearn after replacement?

Yes. After throttle body replacement or battery disconnection, an idle/ETC relearn helps the Transit settle its idle and tip-in. A workshop scan tool can command the relearn, otherwise, a few minutes of stable idle and a short, mixed-condition drive usually does the trick.