Parts for your 2012 Toyota Blade-Map sensor

2012 Toyota Blade MAP sensor: what it does and how to keep it sweet

Based on Toyota’s own technical literature (Toyota Repair Manual for Auris/Blade E150, SFI/Engine Control sections) and the Toyota Electronic Parts Catalogue for the 2012 Blade’s 2AZ-FE 2.4 and 2GR-FE 3.5 engines, a manifold absolute pressure (MAP) sensor is fitted from factory. DENSO service information for these engines also details a dedicated MAP sensor mounted on the intake manifold. So yes—the 2012 Toyota Blade uses a MAP sensor, working alongside the MAF to keep fuelling and timing spot on.

On this Blade, the MAP sensor reads the absolute pressure in the intake manifold. The ECU blends that signal with the MAF reading to calculate engine load, fine-tune ignition timing, manage VVT-i, and monitor EGR/EVAP operation. It also provides a reliable fallback (speed-density) strategy if the MAF reading goes astray, helping the car start cleanly and drive smoothly across Aussie and Kiwi conditions—from city commutes to open-road runs.

These sensors are solid-state and don’t have a set replacement interval, but they do appreciate a bit of attention during servicing—especially on higher‑kilometre cars where oil mist and carbon can build up at the port.

• Where it sits: usually bolted straight to the intake manifold with an O‑ring seal (a single plug, easy to spot). On the V6 it’s at the rear of the upper manifold, on the 2.4 it’s on the manifold body up top.
• What can go wrong: rough idle, lazy throttle response, higher fuel use, or a check engine light. Common fault codes include P0106, P0107 and P0108.
• Service tip: at major services (say every 40–60,000 km), inspect the connector and wiring, ensure the O‑ring isn’t cracked, and check for oil/carbon at the sensor port.

If it’s grimy, a light spray of electronics-safe intake/MAF cleaner can help. Don’t poke the port with tools—just let the cleaner work and air-dry. If replacement’s needed, match the exact part number (genuine or quality equivalent), fit a fresh O‑ring, nip the bolts to snug (they’re small), reconnect the plug, clear any codes with a scan tool and take a short drive. No coding is required, the ECU will adapt on its own. Staying on top of this little sensor helps the Blade run efficiently, pass emissions checks, and keep that easy, torquey pull it’s known for.

Popular questions about the 2012 Toyota Blade MAP sensor

Does the 2012 Blade have both a MAF and a MAP sensor?
Yes. Technical manuals for the E150-series Blade show a MAF in the intake duct and a MAP on the manifold. The ECU uses both for accurate load sensing and diagnostics, with the MAP also serving as a backup strategy.

Where is the MAP sensor on a 2012 Blade and how long to change it?
It’s bolted to the intake manifold with one electrical connector. On the 2.4 it’s up top, on the 3.5 V6 it’s at the rear of the upper manifold. With basic tools it’s typically a 10–20 minute job.

What fault codes point to a MAP issue?
P0106 (range/performance), P0107 (low input) and P0108 (high input) often relate to MAP signal problems. Always check wiring, vacuum integrity (if hose-equipped), and contamination before replacing the sensor.