Parts for your 2018 Volvo Xc60-Throttle position sensors

2018 Volvo XC60 throttle position sensors — what’s fitted and how they’re serviced

Yes, a throttle position sensor is used on the 2018 Volvo XC60 — it’s just not a separate bolt-on sensor. On the SPA-platform XC60 (T5, T6 and T8), Volvo uses an electronic throttle body with twin, integrated throttle position sensors. Volvo VIDA service information for MY2018 XC60 (Function Group 23, Throttle unit) and the factory wiring diagrams show the “Throttle unit (TU)” reporting “Throttle position sensor 1 and 2” signals to the ECM. The Volvo Genuine Parts catalogue lists the complete throttle housing as the service part, with the position sensors internal to that assembly and not supplied separately. In short: the TPS is there, but it’s built into the throttle body.

On this XC60, the throttle position sensors continuously tell the engine computer exactly how far the throttle plate is open. Paired with the accelerator pedal position sensor, they let the ECM control airflow with precision for smooth take-offs, crisp overtakes, stable idle and clean emissions. If the readings don’t agree or drift out of range, the car can swing into limp-home mode to protect the engine and driveline.

When it comes to servicing, there’s no separate TPS to replace. If a sensor fault is confirmed, the fix is a replacement throttle body assembly. After installation the throttle needs adaptation (calibration) with VIDA or a capable scan tool so the ECM relearns the stops and angle. Most workshops will also clear any related DTCs and check software status.

• Common signs of trouble: uneven idle, hesitant throttle, sudden loss of power, higher fuel use, and warning lamps. Typical fault codes include P0121, P0122, P0123, and correlation faults for sensor 1/2.
• Good maintenance: during scheduled servicing, inspect the intake tract for oil mist and carbon, and clean the throttle plate and bore with throttle-body-safe cleaner (engine off, battery disconnected). Don’t force the butterfly by hand — it’s motor-driven and can be damaged.
• Before condemning the throttle body: verify battery and charging health, check connectors and wiring to the throttle unit and pedal sensor, and perform a live-data sweep for both TPS channels. Intermittents from poor grounds or moisture are not uncommon.
• Replacement tips: use a quality OEM-spec unit, renew the gasket if applicable, torque to spec, and complete adaptation. On T8 hybrids, follow high-voltage safety procedures where required by the workshop manual.

Referencing: Volvo VIDA 2018 XC60 service information (Function Group 23: Throttle unit, adaptation procedure), Volvo 2018 XC60 Wiring Diagrams (engine management showing dual TPS signals to ECM), and Volvo Genuine Parts catalogue (Throttle housing assembly with integrated sensors).

FAQs

Does a 2018 Volvo XC60 have a separate throttle position sensor I can replace?
Not as a standalone part. The TPS is built into the electronic throttle body. If the sensor fails testing, the remedy is to replace the throttle body and run a throttle adaptation with VIDA.

What are the symptoms of a failing throttle position sensor on this model?
Drivers often notice rough or high idle, flat spots on acceleration, cruise control dropping out, or limp mode. The ECM will usually log TPS range or correlation faults. A scan of live data will show mismatched or erratic angle signals from the two internal sensors.

Do I need to calibrate the throttle after replacing it?
Yes. After fitting the new throttle body, an adaptation procedure with VIDA (or a compatible tool) is required so the ECM learns the exact closed and open positions. Skipping this step can lead to unstable idle and fault codes.