Parts for your 2001 Honda Odyssey-Throttle position sensors

2001 Honda Odyssey throttle-position-sensor (TPS)

Yes, the 2001 Honda Odyssey is fitted with a throttle-position-sensor (TPS). Honda’s Factory Service Manual for the 1999–2001 Odyssey (Fuel and Emissions/PGM-FI section) specifies a TPS signal to the PCM for throttle angle, and the Honda parts catalogue shows the TPS as part of the throttle body assembly on the J35A1 V6. The manual also documents OBD‑II monitoring of the TPS with DTCs P0120–P0123, confirming the system relies on this sensor for engine and transmission control.

On this Odyssey, the TPS tells the powertrain control module exactly how far the throttle plate is open. That live signal is used to meter fuel, set ignition timing, manage idle air control, and influence the 4‑speed automatic’s shift timing and line pressure. When the TPS tracks smoothly from closed to wide open, the van accelerates cleanly, idles properly, and shifts predictably. A dead spot or incorrect base voltage can make the Odyssey feel lazy off the mark, surge at idle, or hunt between gears.

• Check engine light with codes P0120–P0123
• Surging or unstable idle, stalling at stops
• Flat spots or hesitation on tip-in
• Harsh or erratic gear changes
• Poor fuel economy

There’s no scheduled replacement for the TPS, but it’s smart at each service to keep the throttle body clean, inspect the TPS connector for corrosion or loose pins, and confirm the harness isn’t chafed. With a scan tool, verify closed-throttle reads around 0% and sweeps smoothly to 100% with no jumps. If testing with a multimeter, typical Honda closed-throttle voltage is roughly 0.45–0.55 V (check the FSM spec).

Honda supplies the TPS integrated with the throttle body, so the factory repair is to replace the full throttle body and then perform the idle learn procedure. Many quality aftermarket TPS units are available separately, but they require careful alignment: remove the intake duct, unplug the sensor, drill or remove the original fasteners, fit the new sensor, then rotate it slightly to set the closed‑throttle voltage within spec before tightening. Clear codes, start the engine, warm it to operating temperature, switch all loads off, and let it idle for several minutes to relearn. Whichever route is chosen, a quick road test to confirm smooth tip‑in and tidy shifts rounds out the job.

FAQs

Where is the TPS on a 2001 Odyssey?
It’s mounted on the throttle body on the front bank side of the J35A1 V6. With the bonnet up, follow the intake duct to the throttle body, the TPS sits on the throttle shaft with a 3‑pin connector.

Can the TPS be replaced without changing the whole throttle body?
Honda’s factory method is to replace the throttle body assembly, which includes a new TPS. However, reputable aftermarket sensors can be fitted on their own. If doing so, alignment to the correct closed‑throttle voltage and a subsequent idle learn are essential.

Do I need to recalibrate anything after TPS replacement?
Yes. After fitting, set the base TPS voltage (if the sensor allows rotation) and perform the idle learn procedure so the PCM adapts. Using a scan tool to verify stable throttle readings across the full sweep is recommended.