Parts for your 2022 Toyota C-hr-Map sensor

2022 Toyota C‑HR MAP sensor: what it does, why it matters, and how to look after it

Based on Toyota technical literature, the 2022 Toyota C‑HR is fitted with a Manifold Absolute Pressure (MAP) sensor. The Toyota Service Information (TIS) Repair Manual for C‑HR models lists the MAP sensor within the SFI (fuel injection) system and defines DTCs P0106, P0107 and P0108 for MAP circuit range/performance, low and high signals. The Toyota Electrical Wiring Diagram details the MAP sensor circuit to the ECM (typically VC, VPA and E2 reference/signal/earth), and the Toyota Electronic Parts Catalogue includes “Sensor, Manifold Absolute Pressure” across C‑HR powertrains common to 2022 markets, including the 1.2‑litre turbo (8NR‑FTS), the 1.8‑litre hybrid (2ZR‑FXE) and 2.0‑litre petrol variants. In short: the MAP sensor is relevant and used on the 2022 C‑HR.

On this model, the MAP sensor helps the engine computer read actual air pressure in the intake manifold so it can sort fuelling, ignition timing, EGR checks and, on the 1.2T, boost control. Even hybrids rely on accurate manifold pressure for smooth start/stop transitions. Many C‑HRs also run a MAF, but the MAP adds accuracy during rapid throttle changes, high load, and for onboard diagnostics.

There’s no fixed replacement interval for the MAP sensor, but it’s smart to give it a look during routine servicing—say every 20,000–30,000 km, or when the air filter is changed. If there’s rough idle, sluggish performance, higher fuel use, or the MIL with codes like P0106–P0108, the MAP is a prime suspect.

• Typical symptoms: hesitant take‑off, black smoke on rich running, hard starts, stalling, or a turbo C‑HR that won’t make proper boost.
• Quick checks: inspect the MAP’s vacuum port for oil mist or carbon, ensure the connector is clean and latched, and confirm the O‑ring isn’t split or flattened.

Replacement is straightforward: disconnect the battery negative, unplug the connector, remove the retaining screw, and ease the sensor out—don’t twist hard or pry on the plastic. Clean the manifold port carefully, a lint‑free cloth and a dab of intake‑safe cleaner is fine. Fit a fresh O‑ring, seat the new sensor squarely, and tighten to the factory spec (avoid over‑torquing). Reconnect, clear any codes, and let the engine idle to relearn. On the 1.2‑litre turbo, it’s also worth pressure‑testing the intake for leaks so you’re not chasing a false MAP fault caused by split hoses.

While many owners never touch the MAP for years, keeping the intake tract clean and the air filter fresh helps the sensor read accurately and keeps the C‑HR feeling crisp under the bonnet.

Popular questions

Does the 2022 C‑HR have both a MAF and a MAP sensor?
Yes, most 2022 C‑HR variants use both. The MAF estimates incoming air at the airbox, while the MAP measures actual pressure inside the manifold. Together they improve load calculation, drivability and diagnostics, and the turbo 1.2T relies on the MAP for boost control as well.

Where is the MAP sensor on a 2022 C‑HR?
It’s mounted on or near the intake manifold, typically close to the throttle body. On the 1.2‑litre turbo you’ll also see a separate boost/pressure sensor in the charge pipe, but the MAP you’re after sits on the manifold itself, sealed with an O‑ring.

Do I need to program anything after replacing the MAP sensor?
No special coding is usually required. Clear any fault codes, start the engine and allow it to idle for a few minutes so the ECM can stabilise trims. A short drive with varied throttle helps the system relearn quickly. If codes return, recheck the connector, vacuum integrity and the O‑ring seal.