Parts for your 2016 Toyota Wish-Map sensor

2016 Toyota Wish MAP sensor — what it does and how to look after it

Technical sources confirm the 2016 Toyota Wish is fitted with a MAP (Manifold Absolute Pressure) sensor. Toyota’s Electronic Parts Catalogue (model codes ZGE20/25, 2015–2017) lists a “Sensor, Manifold Absolute Pressure” on the intake manifold, with common part numbers including 89421‑0D010 for the 1.8L 2ZR‑FAE and 89421‑0D040 for the 2.0L 3ZR‑FAE. The Toyota Repair Manual for 2ZR‑FAE/3ZR‑FAE (SFI/Engine Control sections) details diagnostics for MAP-related DTCs (P0105–P0108), and Denso’s technical catalogues list matching MAP sensors for these engines. So yes, the Wish uses a MAP sensor alongside its MAF.

On the 2016 Toyota Wish, the MAP sensor helps the ECU figure out engine load by reading the absolute pressure inside the intake manifold. That info is crucial for fuelling and ignition timing, altitude correction, EGR/valve control logic, and catching vacuum leaks. With Valvematic engines, the throttle plate stays more open than on older setups, but the ECU still leans heavily on the MAP signal to keep drivability crisp and emissions tidy.

There’s no fixed replacement interval for the MAP sensor, but it’s smart to give it attention during regular servicing. If the Wish starts idling rough, feels doughy off the line, chews more fuel than usual, or lights the check engine lamp with codes like P0106, the MAP is a usual suspect. Before throwing parts at it, check the basics: any split vacuum hoses, a loose electrical connector, oil mist puddling in the manifold, or carbon build-up around the sensor port can all skew readings.

Cleaning and replacement are pretty straightforward. With the ignition off, unplug the 3‑pin connector, undo the retaining bolt, and ease the sensor straight out. Replace the O‑ring if it’s flattened or cracked. If you’re cleaning, use electronics‑safe sensor cleaner only—don’t poke the sensing element and don’t blast it with high‑pressure air. Refit carefully, snug the bolt to factory spec, reconnect, clear any stored codes, and take a short drive so the ECU can relearn trims. If the fault returns, a new genuine or quality aftermarket MAP sensor is the go.

A quick note on prevention: keeping the PCV system healthy and the air filter clean reduces oil vapour and dust that can foul the sensor. During services, a visual once‑over and a live‑data check of MAP kPa at key‑on and idle can catch problems early, saving hassle down the track.

Does a 2016 Toyota Wish have both a MAP and a MAF sensor?

Yes. The Wish uses a MAF in the intake duct and a MAP on the manifold. The ECU cross‑checks both to nail load calculations, altitude correction, and diagnostics. If one reading looks off, it’ll often set a code to point you in the right direction.

Where is the MAP sensor on a 2016 Wish?

It’s mounted on the intake manifold, typically near the throttle body. Look for a small, rectangular 3‑pin sensor fixed with a single bolt, with its tip protruding into the manifold runner.

Should the MAP sensor be cleaned or replaced during regular servicing?

There’s no set interval. Clean it if there are drivability issues or a MAP‑related code, and replace it if cleaning and basic checks don’t fix the fault. Always renew the O‑ring when swapping sensors to prevent vacuum leaks.