Parts for your 2017 Lexus Is-Map sensor

2017 Lexus IS MAP Sensor — What It Does and How to Look After It

Yes, a MAP sensor is fitted to the 2017 Lexus IS range. Technical Lexus/Toyota sources note the Manifold Absolute Pressure (MAP) sensor on both the turbocharged 8AR‑FTS (IS 200t/300) and the V6 2GR‑FKS (IS 350/300 in some markets). The Lexus IS Repair Manual and New Car Features publications describe a “manifold absolute pressure” or “turbo pressure” sensor, and the factory DTC list includes MAP-related codes such as P0106, P0107 and P0108 (plus boost pressure sensor codes P0236–P0238 on turbo models). Those references confirm the part is relevant and used on 2017 IS vehicles.

The MAP sensor reads the absolute pressure inside the intake manifold so the engine control module can calculate load accurately. On the 8AR‑FTS turbo, it doubles as the boost pressure reference, helping the ECU manage turbo response and fuel delivery without drama. On the 2GR‑FKS V6, it works alongside the MAF to sharpen transient fueling, support diagnostics and keep emissions tidy. Either way, a healthy MAP sensor means crisper throttle response, better fuel economy and stable idle.

There’s no scheduled replacement interval for a MAP sensor on a 2017 Lexus IS, but it’s smart to give it attention during regular servicing. Signs it’s on the way out include a Check Engine Light, lazy acceleration, rough idle, hard starts and thirsty fuel use. Common fault codes owners might see are P0106–P0108 for MAP circuit issues, and on the 8AR‑FTS, P0236–P0238 for boost pressure sensor faults.

Location-wise, the sensor sits on or near the intake manifold. On the IS 200t/300 (8AR‑FTS) it’s typically mounted on the manifold or charge pipe near the throttle body. On the IS 350 (2GR‑FKS), look on top of the manifold where a short vacuum passage feeds the sensor. Replacement is straightforward: disconnect the battery negative, unplug the connector, undo the fasteners, and lift the sensor out, taking care of the O‑ring. Refit with a fresh O‑ring if it’s flattened or cracked, then torque the screws snugly.

For maintenance, keep the electrical connector clean and ensure any vacuum hoses to the sensor aren’t split. If contamination is suspected, a light spray with electronics-safe cleaner can help—avoid aggressive solvents or poking tools into the port. When faults persist after cleaning, fitting a quality replacement is the best bet. Following the factory procedures from the Lexus Repair Manual will keep things sweet and save guesswork.

• Symptoms of trouble: CEL on, rough idle, poor economy, hesitation, boost issues (turbo models)
• Quick tips: Check wiring, O‑ring seal, vacuum lines, clear DTCs and road test

Popular questions about the 2017 Lexus IS MAP sensor

Does the 2017 Lexus IS use both MAF and MAP sensors?
Yes. The V6 and turbo engines use a MAF for airflow measurement and a MAP to track manifold pressure. On turbo models, the MAP also functions as the boost reference. This combo lets the ECU maintain smooth drivability and solid fuel economy.

Where is the MAP sensor located on an IS 200t and IS 350?
On the IS 200t/300 (8AR‑FTS), it’s usually on the intake manifold or just ahead of the throttle on the charge pipe. On the IS 350 (2GR‑FKS), it’s mounted on the upper intake manifold, easy to spot near the centre with a small electrical connector.

Should a MAP sensor be cleaned or replaced?
There’s no routine cleaning required, but if oil mist or dust builds up, a careful spray with electronics-safe cleaner can help. If faults return or codes persist, replacement with a genuine-quality unit is the reliable fix.