Parts for your 2020 Honda Odyssey-Throttle position sensors

2020 Honda Odyssey Throttle Position Sensors

Yes, the 2020 Honda Odyssey uses a throttle position sensor (TPS) as part of its electronic throttle control system. Technical references that confirm this include Honda service information for the 2018–2020 Odyssey Electronic Throttle Control System (ETCS), Honda parts catalogue illustrations listing the throttle body assembly with an integrated TPS, and Honda diagnostic coverage for DTCs such as P0121, P0122, P0123 and P2135 that specifically monitor throttle position and correlation. On this model, the TPS is built into the throttle body and isn’t serviced separately from the assembly.

On the 2020 Odyssey, the TPS tells the engine control unit exactly how far the throttle plate is open, so the vehicle can meter fuel, manage idle, and coordinate transmission shifts smoothly. It works hand-in-hand with the accelerator pedal position sensors, but it lives on the throttle body itself and tracks the blade angle in real time. That’s why a dodgy TPS can cause uneven idle, sluggish take-off, harsh gear changes, or a check engine light.

Because Honda integrates the sensor into the electronic throttle body, replacement typically involves swapping the complete throttle body rather than the sensor alone. For most owners, that’s a workshop job. After fitting, an idle learn/throttle position relearn with a scan tool (or the Honda-specified warm-up and idle learn procedure) is required so the ECU can adapt to the new unit. Skipping that can leave the van idling high or hunting at the lights.

As part of regular servicing, it’s smart to keep the throttle body clean, especially if the Odyssey spends a lot of time on short trips around town. Use a proper throttle body cleaner, avoid forcing the throttle plate by hand, and don’t soak the electronics. If symptoms persist after a careful clean, testing with a scan tool to check throttle angle tracking and correlation is the next step. Any TPS-related fault on this model should be diagnosed promptly—running it for ages with the light on can push fuel trims out and hurt economy.

• Typical warning signs: erratic idle, hesitation, limp mode, or the MIL with TPS/ETCS DTCs.
• Recommended fix: replace the throttle body assembly if the TPS fails, perform an idle learn.
• Good practice: inspect the intake duct for leaks and ensure the connector pins are clean and seated.

Technical sources referenced: Honda Service Information (ETCS, 2018–2020 Odyssey), Honda parts catalogues showing integrated TPS in the throttle body assembly, and Honda diagnostic procedures for TPS/ETCS DTCs.

Popular questions about 2020 Honda Odyssey throttle position sensors

Does the 2020 Odyssey’s TPS come separately or with the throttle body?
The TPS is integrated into the electronic throttle body on the 2020 Odyssey and isn’t sold separately by Honda. If the sensor fails testing or sets correlation faults, the proper repair is to replace the throttle body assembly and carry out an idle learn.

What symptoms point to a failing TPS on a 2020 Odyssey?
Owners often notice rough or high idle, hesitation on take-off, cruise control dropping out, or the check engine light with codes like P0121–P0123 or P2135. A scan tool can verify if commanded and actual throttle angles track together, if they don’t, the TPS/throttle body is suspect.

Is calibration needed after throttle body replacement or cleaning?
Yes. After replacement—and often after a thorough clean—an idle learn/throttle position relearn is needed. A workshop can do this with a scan tool, or it can be done manually following Honda’s procedure, which involves warming the engine fully and letting it idle undisturbed so the ECU can relearn the throttle angle.