Parts for your 2005 Daihatsu Yrv-Map sensor

2005 Daihatsu YRV MAP sensor — purpose, location and servicing

Based on factory documentation and parts catalogues, the 2005 Daihatsu YRV is fitted with a manifold absolute pressure (MAP) sensor and relies on it for fuelling and ignition control. The Daihatsu YRV M200/M201 workshop manual (EFI section) identifies a MAP sensor with associated DTCs P0105–P0108, and the Daihatsu Electronic Parts Catalogue lists “Sensor, Pressure (Manifold)” for both K3‑VE (1.3 NA) and K3‑VET (1.3 turbo) engines, commonly supplied by Denso (e.g., 079800‑5410, OE refs 89420‑97206/97207). Denso’s aftermarket catalogues and Autodata service information also reference this MAP fitment and its role in the YRV’s speed‑density EFI system.

On this model, the MAP sensor measures the absolute pressure inside the intake manifold and feeds a voltage signal to the ECU. The ECU blends that signal with intake air temperature, engine speed and throttle position to estimate air mass, then sets fuelling and ignition timing. On the turbo K3‑VET, the same pressure sensing is also how the ECU monitors boost. A healthy MAP sensor helps the YRV start cleanly, idle smoothly, pull strongly through the revs and return sensible fuel economy over long Kiwi and Aussie kilometres.

• Tell‑tales of a tired MAP sensor include rough idle, flat spots, higher fuel use, hard starting, and a check‑engine light with codes P0105–P0108.
• Under the bonnet, it’s typically mounted on or near the intake manifold, turbo variants may have the pressure sensor on a bracket with a vacuum hose to the manifold.

As part of routine servicing, owners benefit from quick checks and simple upkeep:

1. Inspect the vacuum hose (if fitted) for splits, oiling or loose clips. Replace any perished hose to prevent false readings.
2. Unplug the connector and check for green corrosion or moisture, clean terminals with electronics‑safe contact cleaner and let them dry.
3. If oil mist has coated the sensor port, remove the unit and gently clean the port with MAF/MAP‑safe cleaner only—no harsh solvents or compressed air that can damage the sensing element.
4. When replacing, choose a quality Denso‑spec sensor. Refit with the correct O‑ring, seat squarely, and tighten the retaining bolt(s) lightly—over‑torque can crack housings.
5. Clear fault codes and allow a short drive cycle so the ECU relearns trims. If problems persist, smoke‑test the intake for leaks and confirm reference voltage and ground at the plug.

Popular questions about the 2005 Daihatsu YRV MAP sensor

Where is the MAP sensor on a 2005 Daihatsu YRV?
On most YRV K3‑VE engines it’s on or near the intake manifold close to the throttle body. The K3‑VET turbo may mount the pressure sensor on a small bracket with a vacuum hose to the manifold. Either way, it’s under the bonnet on the intake side, with a two‑ or three‑pin connector.

What fault codes point to a bad MAP sensor?
Common codes are P0105 (MAP circuit range/performance), P0106 (MAP circuit range/performance), P0107 (low input) and P0108 (high input). These can also be triggered by split vacuum hoses, intake leaks, poor earths or a contaminated sensor port, so testing the hose, wiring and voltage supply is important before replacing the unit.

Does the 2005 YRV use a MAF or a MAP sensor?
The YRV uses a MAP‑based speed‑density system rather than a hot‑wire MAF. That’s why manifold pressure and intake temperature are crucial for fuelling and timing. Turbo models still rely on MAP/boost sensing to manage load and protect the engine under boost.