Parts for your 2008 Honda Elysion-Throttle position sensors

2008 Honda Elysion throttle position sensor (TPS)

Based on Honda’s technical literature, the 2008 Honda Elysion does use a throttle position sensor. The Elysion (RR1 K24A 2.4 and RR3/RR4 J30A/J35A V6) runs Honda’s Electronic Throttle Control System, which integrates a throttle position (TP) sensor within the electronic throttle body. Honda’s Elysion RR1/RR3 Workshop Manual (2007–2010) lists the TP sensor as part of ETCS and includes related DTCs (P0120–P0123, P0220–P0223) for TP/APP correlation. The Honda Electronic Parts Catalogue for RR1/RR3 shows the throttle body assembly with the sensor built-in (not serviced separately on most variants). Honda OBD-II diagnostic references also define TP sensor signal checks and idle learn procedures after throttle body service. So, the TPS is definitely relevant and fitted on the 2008 Elysion.

What does it do? The TPS tells the engine ECU exactly where the throttle plate sits, so fuelling, ignition timing and transmission shift logic match the driver’s demand. On the Elysion’s drive-by-wire setup, the ECU compares accelerator pedal position with the TP sensor to position the throttle motor smoothly and safely. If those signals don’t line up, the ECU can drop the car into limp mode to protect the engine and transmission.

Typical warning signs include:

• Erratic idle, stalling at lights, or sluggish take-off
• Surging at cruise or hunting idle after a battery change
• Check Engine/VSA/TCS lights with TP/APP correlation codes

Servicing tips for Aussie and Kiwi conditions: the TPS on most 2008 Elysions is integrated, so you generally replace the throttle body assembly rather than the sensor alone. Before replacing anything, rule out simple causes—vacuum leaks, a dirty throttle bore, or wiring/connectors with green corrosion. If you clean the throttle, keep clear of the shaft seals and don’t force the butterfly. Fit a new gasket, check the PCV hose, and torque the body evenly.

After cleaning or replacing the throttle body, perform an idle learn/throttle position reset. With a scan tool, verify TP percentage tracks smoothly from closed to wide-open and correlates with accelerator pedal readings. Battery support during testing helps avoid low-voltage faults. As part of regular servicing, a quick visual on the intake ducting, air filter, and throttle bore, plus a scan of live data, can prevent niggly drivability dramas.

Popular questions

Does a 2008 Honda Elysion have a separate, replaceable TPS?
The 2008 Elysion’s TPS is typically built into the electronic throttle body. On most engines fitted to this model, Honda doesn’t supply the TPS as a separate part, so replacement usually means swapping the complete throttle body assembly.

What are the signs the TPS is on the way out?
Look for an unstable idle, hesitation, poor fuel economy, and warning lamps. A scan may show TP/APP correlation codes. Before condemning the TPS, check for intake leaks and a dirty throttle plate, as these can mimic sensor faults.

Do I need to calibrate anything after throttle work?
Yes. After cleaning or replacing the throttle body, carry out the idle learn/throttle position reset. Using a scan tool to confirm stable TP readings and a steady idle will save time and avoid repeat visits.