Parts for your 2019 Toyota Hilux-Map sensor

2019 Toyota HiLux MAP sensor: what it does and how to look after it

Based on Toyota factory service information for the N80 HiLux range (2015–2020) and Denso engine-management diagrams and parts catalogues, the 2019 Toyota HiLux is fitted with a manifold absolute pressure sensor (commonly called a MAP or boost pressure sensor). On the 1GD‑FTV 2.8‑litre and 2GD‑FTV 2.4‑litre turbo‑diesels sold across Australia and New Zealand, the sensor mounts to the intake manifold and reports boost/manifold pressure to the ECU. Some petrol variants also use a MAP/T‑MAP alongside a MAF for load calculation and altitude compensation.

The MAP sensor’s job is to tell the ECU exactly how dense the air is inside the manifold. That live pressure data lets the ECU control fuelling, VNT turbo operation, EGR flow, and timing so the ute pulls cleanly, meets emissions, and sips fuel sensibly from sea level to the high country. If the reading is off, the ECU can’t dose fuel correctly and the HiLux won’t feel right on or off road.

Common signs of a crook or contaminated MAP sensor include a check engine light, sluggish performance, limp mode under load, smokier exhaust on diesels, rougher idle than usual, and higher fuel use. Typical fault codes a scan tool might show are P0106, P0107, or P0108.

Servicing is straightforward. Because EGR and crankcase vapour can lay soot and oil film in the manifold, the sensor tip and its little port can gum up. During regular servicing (every 20,000–40,000 km, or sooner if the vehicle works in dust or short-trip duty), it’s wise to inspect and, if needed, clean the MAP sensor using electronics-safe cleaner. Don’t poke the sensing element, don’t use harsh solvents, and let it dry completely. Refit with a fresh O‑ring if the old one looks flat or nicked, and make sure the connector pins are clean and the loom strain relief is sound.

When replacement is due, quality matters—stick with OE-spec parts so the calibration matches what the ECU expects. After fitting, clear any codes and check live data: with the key on/engine off, MAP should read close to local barometric pressure, at idle a diesel will sit near barometric, while a petrol engine shows a lower value due to vacuum. If readings look odd, check for intake leaks, blocked ports, or wiring issues before calling the sensor itself.

• Clean gently with sensor-safe spray, never scrape.
• Inspect wiring, connector seals, and the manifold port.
• Use a scan tool to verify readings and clear DTCs after work.

Popular questions about the 2019 Toyota HiLux MAP sensor

Where is the MAP sensor on a 2019 HiLux?

On the 1GD‑FTV and 2GD‑FTV diesels, it’s mounted on the intake manifold near the EGR/throttle body area, under the bonnet on the driver’s side (RHD vehicles). It has a small sensing port into the manifold and a plug with wiring to the engine loom.

Look for a compact black sensor secured with screws and an O‑ring seal. Some variants may combine temperature sensing (a T‑MAP), but the position remains at the manifold so it reads true boost pressure.

Can a dirty MAP sensor be cleaned, or should it be replaced?

Light contamination can usually be cleaned with electronics-safe or MAF sensor cleaner. Avoid touching the sensing element and allow it to dry fully before refitting. If the sensor is physically damaged, oil-soaked internally, or keeps throwing range/performance codes after cleaning and checks, replacement is the go.

Always inspect the manifold port for carbon buildup and ensure the O‑ring seals properly, leaks will skew readings even with a brand-new sensor.

What symptoms point to a failing MAP sensor on a 2019 HiLux?

Expect a check engine light, flat spots on acceleration, limp mode under load, rougher idle, and increased fuel use. Diesels may blow a bit more black smoke. Scan tools commonly log P0106, P0107, or P0108 when the sensor signal is out of range or implausible.

Before blaming the sensor, rule out wiring faults, poor grounds, intake leaks, or a blocked sensing port, as these can mimic a failed MAP.