Parts for your 2017 Toyota Crown-Map sensor

2017 Toyota Crown MAP sensor: relevance, purpose, and servicing tips

Based on Toyota technical literature for the S210-series Crown (2015–2018), a MAP (Manifold Absolute Pressure) sensor is fitted and relevant on 2017 models. The Crown’s 2.0L turbo (8AR‑FTS) uses a manifold/boost pressure sensor for load and boost control, and the hybrid variants (2AR‑FSE and 2GR‑FXS) also employ a MAP sensor for intake pressure feedback and EGR management. This is documented in Toyota Repair Manual engine control chapters for SFI/D‑4S systems and in Toyota’s Electronic Parts Catalog, which lists an intake manifold pressure sensor for these engines.

For this 2017 Toyota Crown, the MAP sensor measures absolute pressure in the intake manifold so the ECM can nail fuel and ignition timing under all conditions. On the 8AR‑FTS turbo, it also pulls duty as a boost feedback sensor, helping the wastegate and turbo control keep things tidy under the bonnet. On the hybrid engines, it supports smooth idle, start‑stop transitions, and accurate EGR flow. The result is crisp throttle response, good fuel economy, and clean emissions whether it’s cruising the motorway or shuffling through city traffic.

Servicing is straightforward and light‑touch. The sensor itself isn’t a scheduled replacement item, but it benefits from periodic checks during routine servicing—especially if the vehicle’s doing lots of short trips or has seen dusty roads. A visual once‑over for damaged wiring, a perished O‑ring, oil mist contamination, or loose mounting is worth doing every 20,000–30,000 kilometres. If contamination is present, a gentle clean with sensor‑safe electronics cleaner can help, but avoid poking tools into the port or soaking the sensing element.

Replacement is simple: depressurise the intake (engine off), unplug the connector, remove the retaining bolts, swap the O‑ring, and refit the new unit to OE spec. Stick with a genuine or quality OE‑equivalent sensor to ensure the calibration matches Toyota’s strategy. After replacement, clear any stored DTCs and let the ECU relearn trims with a short mixed drive.

• Common clues the MAP sensor needs attention: hard starts, doughy throttle, rough idle, higher fuel use, or the MIL with codes like P0106–P0108 (MAP circuit) or P0236–P0238 (boost pressure sensor range/performance on turbo models).
• Good practice: check for vacuum/intake leaks, brittle connectors, or oil in the charge pipes on turbo models before condemning the sensor.

Referencing: Toyota Crown (S210) Repair Manual engine control sections for 8AR‑FTS, 2AR‑FSE, and 2GR‑FXS, Toyota Electronic Parts Catalog listings for manifold/boost pressure sensor, Toyota EWD signalling (PIM) for intake pressure to ECM.

Popular questions about the 2017 Toyota Crown MAP sensor

Where is the MAP sensor on a 2017 Toyota Crown?

On the 8AR‑FTS turbo, it’s mounted on or near the intake manifold plenum, typically on the top/rear area, reading manifold pressure directly through a port. There’s also a separate charge/boost pressure sensor on the intercooler piping on some variants.

On the hybrid engines, the MAP sensor is likewise fixed to the intake manifold with an O‑ring seal, positioned for a clean signal downstream of the throttle body.

What fault codes point to a dodgy MAP sensor on this model?

Expect P0106, P0107, or P0108 for MAP circuit range/performance/low/high. Turbo variants may also throw P0236–P0238 when the observed boost doesn’t match the target.

Always check wiring, connectors, intake leaks, and PCV/charge system condition before replacing the sensor, as those can trigger the same codes.

Is it safe to drive with a bad MAP sensor?

It’ll usually run, but performance and fuel economy can go off, and the car may enter limp‑home to protect the engine, especially on the turbo. That’s not ideal for overtaking or hills.

Best bet is to address it promptly—sort leaks, clean or replace the sensor, and clear codes—so the ECM can bring fuelling and boost back into line.