Parts for your 2009 Honda Elysion-Map sensor

2009 Honda Elysion MAP sensor — what it does and how to look after it

Based on Honda technical literature for the Elysion RR-series (PGM‑FI system description in the Honda Service Manual and the Honda Electronic Parts Catalogue for RR1–RR6, 2008–2010), the 2009 Honda Elysion is fitted with a Manifold Absolute Pressure (MAP) sensor. Both the 2.4‑litre K24A and V6 Elysion variants list a MAP sensor mounted on the intake manifold, and relevant OBD‑II diagnostics (DTCs P0106, P0107, P0108) are specified for MAP signal faults in those manuals.

Under the bonnet, the MAP sensor on a 2009 Honda Elysion is a small, three‑pin sensor that reads the vacuum/pressure inside the intake manifold. The engine control unit uses that pressure reading to figure out engine load and, from there, it fine‑tunes fuel delivery and ignition timing. On these Hondas running PGM‑FI, the MAP signal is key for smooth idle, clean take‑off, solid fuel economy and reliable emissions control. If the MAP reading goes skew‑whiff, the ECU can’t calculate fuel properly, and drivability suffers.

There’s no fixed interval for MAP sensor replacement in Honda’s service schedules, but it’s smart to give it a look during routine servicing—especially if the car is racking up the kilometres in dusty or humid conditions. Check that the electrical connector is snug and clean, the sensor body isn’t cracked, and the O‑ring seals properly to the manifold. If oil mist or grime has crept into the port, a light clean with electronics‑safe contact cleaner is fine—don’t poke anything into the sensing hole, and avoid aggressive solvents.

Replacement is straightforward on the Elysion:

• Switch off, disconnect the plug, undo the retaining screw(s), and lift the sensor out.
• Install a fresh O‑ring, seat the new sensor squarely, nip the bolts to spec (refer to Honda workshop data), and reconnect the plug.
• Clear any fault codes and let the ECU relearn idle trim with a short drive.

Common signs of a crook MAP sensor include a check engine light and codes P0106/P0107/P0108, rough idle, hard starting, flat spots on acceleration, black smoke, and thirsty fuel use. Before condemning the sensor, rule out vacuum leaks, split PCV hoses, or wiring issues—these can mimic a bad MAP. A quick multimeter check for a steady 5‑volt reference, good ground, and a signal that changes with throttle (low volts at idle, higher at wide open) will help confirm what’s going on.

Looked after properly, the Elysion’s MAP sensor is a fit‑and‑forget bit of kit that quietly keeps the tune on point.

Popular questions about the 2009 Honda Elysion MAP sensor

Where is the MAP sensor on a 2009 Honda Elysion?
It’s mounted on the intake manifold plenum with a single screw or two and a three‑pin connector. On the K24A 2.4‑litre it sits near the throttle body, on V6 models it’s on the front bank’s manifold area for easy access under the bonnet.

What fault codes point to a bad MAP sensor on an Elysion?
Typical codes are P0106 (MAP range/performance), P0107 (low input) and P0108 (high input). If these are present alongside rough idle, hesitation or poor economy, inspect for vacuum leaks and wiring faults first, then test or replace the sensor.

Can the MAP sensor be cleaned, or should it be replaced?
A light clean with electronics‑safe cleaner can help if there’s minor contamination. If readings are unstable or out of range, replacement is the go. Always fit a new O‑ring, seat the sensor squarely, and clear codes—no special recalibration is usually needed as the ECU self‑learns.