Parts for your 2010 Honda Accord-Throttle position sensors

2010 Honda Accord Throttle Position Sensor (TPS)

On the 2010 Honda Accord, a throttle position sensor is absolutely used and relevant. Technical sources including the Honda Accord 2008–2012 Service Manual (PGM-FI, Electronic Throttle Control), Honda ServiceNews articles on drive‑by‑wire throttle systems, and professional databases such as ALLDATA and Mitchell ProDemand note that both the 2.4L K24Z and 3.5L J35Z engines run electronic throttle control with an integrated dual‑track Throttle Position (TP) Sensor A/B in the throttle body, plus an Accelerator Pedal Position sensor at the pedal. The TP sensors are built into the throttle body and aren’t adjustable separately, if they fail, the throttle body assembly is replaced.

For this Accord, the TPS’s job is to report the exact angle of the throttle plate to the engine computer. That signal helps manage fuel delivery, ignition timing, transmission shift logic, cruise control and idle stability. With drive‑by‑wire doing the heavy lifting, accurate TPS feedback keeps throttle response smooth and keeps the car out of limp mode.

There’s not much day‑to‑day maintenance for the TPS itself because it’s sealed into the throttle body. What does help is keeping the throttle bore clean and ensuring solid electrical connections. When cleaning, use throttle‑body‑safe cleaner, don’t douse the motor housing, and avoid forcing the plate by hand. After battery disconnects, throttle body cleaning or replacement, perform an idle learn with a scan tool or the factory procedure (warm to operating temp, all loads off, let it idle undisturbed so the ECU relearns). Clearing faults and running the throttle/idle learn with a capable scan tool or Honda HDS is the tidy way to finish the job.

If the car logs codes like P0121, P0122, P0123 or P2135, drops into reduced power, surges at idle, or has lazy throttle behaviour, the integrated TP sensors could be suspect. Because the sensor isn’t separately serviceable on this model, the fix is typically a quality replacement throttle body with a new gasket, torqued to spec per the service manual. After fitting, complete the idle learn, verify no air leaks, and confirm live data for TP Sensor A/B tracks cleanly from closed to wide open using a scan tool. That approach keeps the 2010 Accord running sweet as, kilometre after kilometre.

• Key tips: don’t try to “adjust” the TPS (it’s non‑adjustable), avoid moisture in connectors, and always relearn idle after service.

Popular questions about 2010 Honda Accord throttle position sensors

Does the 2010 Accord have a standalone TPS I can replace?
No. On this model the throttle position sensors (A and B) are built into the electronic throttle body. If testing shows a TP sensor fault, the correct repair is to replace the throttle body assembly, fit a new gasket and carry out the idle/throttle learn.

What are common symptoms of a failing TPS on a 2010 Accord?
Drivers often see a check engine light and may feel limp‑home mode, erratic or high idle, flat spots on acceleration, or poor fuel economy. Scan for codes such as P0121–P0123 or P2135 and check live data—both TP Sensor A and B should track smoothly and agree through the pedal range.

Do I need a relearn after cleaning or replacing the throttle body?
Yes. Any time the throttle body is cleaned, replaced or the battery’s been disconnected long enough to clear trims, complete the idle learn procedure, ideally with a scan tool. This lets the ECU relearn throttle and idle targets so it doesn’t hunt or stall.