Parts for your 2018 Honda Odyssey-Map sensor

2018 Honda Odyssey MAP sensor: purpose, servicing and practical tips

Technical sources confirm the 2018 Honda Odyssey uses a Manifold Absolute Pressure (MAP) sensor. The Honda Service Information for the 2018 Odyssey (Fuel and Emissions section) describes MAP sensor operation and diagnostics, including DTCs P0106, P0107 and P0108. OEM parts catalogues for the 2018 Odyssey also list a MAP sensor mounted on the intake manifold for the 3.5‑litre J35 V6. Independent repair databases (ALLDATA and Mitchell1) document the 5‑volt reference, signal and ground circuits and related test procedures for this model year.

The MAP sensor on a 2018 Odyssey measures the absolute pressure inside the intake manifold so the engine control module can nail fuelling and ignition timing. On this V6, that pressure data helps with smooth idle, crisp throttle response, proper emissions control and efficient cylinder deactivation (VCM) during light cruising. Whether the vehicle is tackling a steep Kiwi hill or cruising Aussie motorways, the MAP sensor lets the ECU track real engine load rather than guessing, keeping economy tidy and drivability consistent.

There’s no scheduled replacement interval, but it’s smart to include a MAP sensor check during routine servicing. A quick visual once-over under the bonnet for cracked connectors, chafed wiring, or oil/soot build-up around the sensor port goes a long way. If the Odyssey logs a fault like P0106, shows rough idle, sluggish acceleration, or drinks more fuel than usual, a proper scan and live-data check should come next.

Replacement is straightforward for a competent home mechanic or workshop:

• Key off, allow the engine to cool, and disconnect the electrical plug.
• Remove the sensor’s fasteners, lift the unit out, and replace the O‑ring if it doesn’t come with the new sensor.
• Refit by hand, then nip up the screws—no gorilla torque needed on plastic housings.
• Clear any codes and perform an idle relearn with a scan tool if required by the service info.

A light clean is sometimes enough when symptoms are mild. Use electronics-safe cleaner on the port and connector, avoid forcing spray into the sensor. If the signal is erratic or the code returns quickly, replacement is the better bet. During air filter changes, it’s worth ensuring the intake tract is sealed properly—unmetered air or oil mist can contaminate both the MAP sensor and throttle body, causing headaches down the track.

Does the 2018 Honda Odyssey have both a MAP and a MAF sensor?

Yes, it’s fitted with a MAP sensor, and many 2018 Odysseys also use a mass airflow (MAF) sensor upstream. The ECU blends inputs, using MAP for precise load calculation and transient response, and MAF for airflow measurement. Honda’s service literature and common DTC sets for this model cover both sensors.

Where is the MAP sensor located on a 2018 Odyssey?

It’s mounted on the intake manifold near the throttle body. Expect a single electrical connector and small fasteners holding it in. There’s an O‑ring that seals it to the manifold—replace that seal if it’s flattened, brittle, or missing.

What are the signs of a failing MAP sensor, and can it be cleaned?

Typical signs include rough idle, hesitation, higher fuel use, and an illuminated check engine light—often with P0106, P0107 or P0108. Light contamination can sometimes be cleaned with electronics-safe cleaner, but if the signal remains unstable or codes return, a new sensor is the way to go.