Parts for your 2015 Toyota Wish-Map sensor

2015 Toyota Wish MAP sensor — what it does and how to look after it

Based on Toyota technical literature, a MAP sensor is fitted to the 2015 Toyota Wish. Toyota Service Information (TIS) for the ZGE20/ZGE25 Wish with 2ZR-FAE and 3ZR-FAE engines lists a Manifold Absolute Pressure Sensor as part of the SFI (Sequential Fuel Injection) system, with diagnostics such as DTC P0106, P0107 and P0108 described. Toyota’s Electronic Parts Catalog for the same chassis references a “Sensor, Vacuum (Manifold Pressure)” for these engines, and DENSO’s aftermarket catalogue also includes a MAP sensor application for the Wish 1.8‑litre and 2.0‑litre Valvematic engines. Those sources collectively confirm the MAP sensor is relevant and used on this model.

On a 2015 Toyota Wish, the MAP sensor keeps the engine computer in the loop about how much pressure (or vacuum) is in the intake manifold. That pressure reading helps the ECU figure out engine load so it can dial in the right fuel and spark, especially during quick throttle changes or when climbing a hill with the whānau on board. Even though the Wish also uses a MAF sensor, the MAP input adds accuracy and redundancy, which means smoother drivability, better economy, and cleaner emissions.

Typically bolted to (or near) the intake manifold with a plug-and-play connector, the MAP sensor lives a tough life—heat, oil vapour and the odd backfire can take their toll over the years. As part of routine servicing, it’s worth giving it a quick visual once-over and checking scan data to make sure readings look sensible at key-on and at idle. If there’s hesitation, rough idle, hard starting, or the check engine light with codes like P0106–P0108, the MAP is a prime suspect.

Replacement isn’t a drama for most DIYers: disconnect the battery, unplug the connector, remove the retaining screw(s), swap the sensor and O-ring, and torque it back to spec. Avoid poking anything into the sensor port—if cleaning is attempted, use only electronics-safe cleaner and let it dry fully. Genuine or reputable OEM-equivalent parts are the go-to, cheap knock-offs can cause more grief than they fix. After refitting, clear fault codes and take a short drive to let the ECU relearn trims. With good-quality fuel, regular servicing, and a clean intake, a MAP sensor should last many years and hundreds of thousands of kilometres under the bonnet of a Wish.

• Common signs of MAP trouble: sluggish performance, poor fuel economy, rough idle, black smoke, and MAP-related DTCs.
• Service tip: check vacuum hoses to the manifold and PCV system—leaks can skew MAP readings and mimic a bad sensor.

Popular questions about 2015 Toyota Wish MAP sensors

Where is the MAP sensor on a 2015 Toyota Wish?

On ZGE20/ZGE25 Wish models, the MAP sensor is typically mounted on the intake manifold or immediately adjacent to it, secured with a small bolt and a wiring connector. It sits where it can directly sense manifold pressure, so look for a small rectangular sensor facing into the manifold casting.

If unsure, follow the intake tract under the engine cover and spot the plugged-in sensor on the manifold. A workshop manual or a quick scan-tool check (reading MAP at key-on/engine-off) can confirm you’ve found the right piece.

What symptoms show a failing MAP sensor on a Wish?

Drivers may notice rough idle, flat spots on acceleration, higher fuel use, or the check engine light with codes like P0106, P0107, or P0108. Sometimes there’s a fuel‑rich smell or visible soot from the exhaust.

Because vacuum leaks can cause similar behaviour, it’s smart to smoke-test the intake and check hoses before condemning the sensor. A live-data comparison of MAP, MAF and O2 trims is the tidy way to pin it down.

Should both the MAP and MAF be cleaned or replaced together?

They don’t need to be cleaned or replaced as a pair. If contamination is suspected, the MAF benefits most from a careful clean with MAF-safe spray, the MAP should only be lightly cleaned with electronics-safe cleaner if deposits are visible.

Replace only the sensor that fails testing. Using genuine or high-quality OEM-equivalent parts helps keep the ECU happy and the Wish running sweet as over the long haul.