Parts for your 2001 Ford Mondeo-Throttle position sensors

2001 Ford Mondeo throttle position sensor (TPS): what it does and how to look after it

Based on Ford TIS/ETIS workshop information, the Haynes Service & Repair Manual for Mondeo (2000–2007), and Autodata wiring references, the 2001 Ford Mondeo petrol engines (Duratec HE 1.8/2.0) are fitted with a throttle position sensor (TPS) on the throttle body. These sources show a 3‑wire, 5‑volt reference potentiometer feeding the PCM. Note: early diesel TDDi variants don’t use a conventional throttle/TPS, they rely more on accelerator pedal position and airflow/EGR management, while some later TDCi setups add an intake throttle with its own position feedback.

On petrol models, the TPS tells the engine computer exactly how far the throttle plate is open, so fuelling and ignition can be adjusted smoothly as the driver rolls on and off the pedal. It also helps with idle control and decel fuel cut, and on autos it can influence shift timing. When it’s doing its job, throttle response feels clean and linear, fuel economy stays on track, and the idle behaves nicely.

A flaky TPS can cause a Mondeo to feel a bit doughy off the line or surge at cruise. Common giveaway signs include an erratic idle, hesitation or flat spots, poor economy, the odd stall, and a glowing check engine light with codes like P0120–P0124. During regular servicing it’s worth a quick look: make sure the connector is snug, pins aren’t green with corrosion, and the harness near the throttle body isn’t chafed. Clean the throttle body with proper intake cleaner, but don’t drown the TPS itself—it's a sealed unit and doesn’t like solvents.

Testing is straightforward with a scan tool or multimeter. With the key on, a healthy TPS will show a smooth sweep from roughly 0.5–0.9 V at closed throttle up to about 4.2–4.7 V at wide open, with a steady 5 V reference and a solid ground. Any dead spots or sudden voltage jumps mean it’s time to replace.

Replacement is a quick driveway job on most petrol Mondeos: two screws on the throttle body, swap the sensor, and reconnect. If the mounting is slotted, mark the old position and nip the new one up evenly—don’t overtighten. After refit, clear codes and perform an idle/throttle relearn (key on for 30 seconds, then start and let it idle a few minutes). Use a quality OEM-equivalent sensor to keep the PCM happy and the throttle feel spot on. If your 2001 Mondeo is a diesel, confirm whether your engine actually has a throttle assembly before ordering parts.

Symptoms checklist

• Hesitation, flat spots, or surging
• Unstable or high/low idle, stalling
• Poor fuel economy
• Check engine light with TPS-related DTCs

Does a 2001 Ford Mondeo have a TPS, and where is it?

On petrol models, yes—the TPS is bolted to the throttle body on the intake manifold, with a 3‑pin plug. Early diesel TDDi cars don’t use a conventional throttle/TPS, they rely on accelerator pedal position and other sensors. Some later TDCi variants introduced an intake throttle with position feedback, which is a different setup.

What are the signs the TPS is failing on a 2001 Mondeo?

Expect hesitation, flat spots, an erratic idle, or surging at steady speeds. The check engine light may show with codes like P0120–P0124. A scan tool will often reveal a jumpy or inconsistent throttle angle reading as you slowly press the pedal.

Can the TPS be cleaned, or should it be replaced?

The TPS itself is sealed and not serviceable—don’t open it or soak it. You can clean the throttle body and inspect the connector and wiring. If readings aren’t smooth or codes keep returning, replacement with a quality part is the fix, followed by an idle/throttle relearn.