Parts for your 2011 Toyota Vitz|yaris-Map sensor

2011 Toyota Vitz/Yaris MAP sensor — what it is and whether yours has one

Based on Toyota factory information, a MAP sensor is used on some, but not all, 2011 Vitz/Yaris variants. Toyota’s service manuals for the KSP130 with the 1.0‑litre 1KR‑FE engine include diagnostics for Manifold Absolute Pressure (MAP) faults (DTCs P0106, P0107, P0108), and the Toyota Electronic Parts Catalogue lists a “Sensor, Manifold Absolute Pressure” (also called a Vacuum Sensor) under part numbers commonly seen as 89421‑0D030/0D040 for these models. In contrast, many 1.3‑litre 1NR‑FE and some 1.5‑litre variants are documented in the same sources as using a hot‑wire Mass Air Flow meter (e.g., 22204‑0D030) without a separate MAP sensor for load calculation. So the MAP sensor is relevant to 2011 Vitz/Yaris vehicles equipped with the 1KR‑FE (and similar speed‑density setups), while MAF‑equipped models won’t have this part.

On vehicles that do have it, the MAP sensor is the quiet achiever sitting on the intake manifold. It reads the absolute air pressure in the manifold so the ECU can work out engine load, trim fuelling, and tweak ignition timing. That’s how it keeps the little Vitz/Yaris crisp on throttle, easy on fuel, and compliant with emissions rules. When the MAP goes off, owners may notice rough idle, lazy take‑offs, extra fuel use, black smoke, or the check‑engine light with codes like P0106–P0108.

It’s not a high‑maintenance item, but it’s worth a look during regular services. Quick checks include:

• Make sure the electrical connector is tight and clean, treat any green corrosion with proper contact cleaner.
• If your sensor uses a short vacuum hose, check the hose for splits, softness, or oil contamination.
• Scan‑tool sanity check: with ignition on/engine off, MAP should read close to local barometric pressure, at warm idle it should drop into the 25–40 kPa range depending on altitude and engine condition.

Replacement is straightforward: disconnect the battery negative, unplug the sensor, remove its screws or clip, swap the O‑ring, and refit. Don’t drown it in harsh solvents—unlike a MAF, MAP sensors generally aren’t “cleaned”, if it’s faulty, replacement is the go. After fitting, clear any codes and let the ECU relearn with a gentle test drive that includes a few steady‑state kilometres and some light throttle climbs.

Good practice is to inspect the MAP and its hose (if fitted), plus vacuum lines and the PCV system, every 60,000–100,000 km. Air leaks can make MAP readings look wrong, so fixing cracked hoses and manifold gaskets often restores smooth running without chasing ghosts. Using a genuine or reputable brand sensor helps keep the calibration stable and the fuel economy on point.

Popular questions about the 2011 Toyota Vitz/Yaris MAP sensor

Does my 2011 Vitz/Yaris have a MAP or a MAF?
It depends on the engine. KSP130 models with the 1.0L 1KR‑FE use a MAP sensor. Many 1.3L 1NR‑FE and some 1.5L variants use a MAF instead and don’t have a separate MAP for load. A quick check: a MAP mounts on the intake manifold, a MAF lives in the air intake duct or airbox.

Where is the MAP sensor located on a 2011 Vitz/Yaris?
On 1KR‑FE models it’s bolted to the intake manifold near the throttle body, sometimes connected via a short vacuum port. Look for a small, rectangular sensor with a two‑ or three‑pin connector and, often, a single mounting screw.

Can a dodgy MAP sensor cause poor fuel economy or a failed WOF/rego emissions check?
Absolutely. A faulty MAP skews load calculations, leading to over‑fuelling, rough idle, and higher emissions. If the check‑engine light’s on with codes like P0106–P0108, sorting the MAP issue usually restores economy and helps the car pass its test.