Parts for your 2020 Mitsubishi Asx-Camshaft sensor

2020 Mitsubishi ASX Camshaft Sensor: What It Does and How to Look After It

According to Mitsubishi Motors service literature for the 2019–2021 ASX (also known as RVR/Outlander Sport) with the 2.0L and 2.4L MIVEC DOHC petrol engines (4B11/4B12), a camshaft position sensor is absolutely fitted and used. Factory documentation such as the Engine Electrical – Camshaft Position Sensor section and the MIVEC system description in the engine control chapter confirm the sensor’s role in phasing, sequential injection and variable valve timing. So yes—on a 2020 Mitsubishi ASX, the camshaft sensor isn’t just relevant, it’s essential.

This little Hall‑effect sensor watches the cam’s position relative to the crank, letting the ECU line up fuel injection and spark on the right stroke and dial in MIVEC timing for smooth idle, decent grunt and better economy. When it’s healthy, cold starts are clean, throttle response feels crisp, and the timing system behaves itself under the bonnet.

There’s no scheduled replacement interval for the camshaft sensor on a 2020 ASX, but it makes sense to check it during major services or whenever there are top‑end oil leaks. Basic care is straightforward: make sure the connector is tight, the wiring loom isn’t rubbing or heat‑soaked, and there’s no oil wicking up into the plug from a rocker cover leak. If the tip’s dirty, a gentle wipe with a lint‑free cloth will do—skip harsh solvents.

Signs it’s on the way out can include a check engine light, hard starting, intermittent stalling, uneven idle, flat spots, or the car dropping into limp mode. Common fault codes technicians see are along the P0340/P0341 (intake) and P0365/P0366 (exhaust) lines.

• If replacement’s needed, use quality OEM‑spec parts and a fresh O‑ring lightly oiled before install.
• Disconnect the battery negative, remove the engine cover, unclip the connector, and undo the retaining bolt. Fit the new sensor, route the loom correctly, and tighten the bolt to the workshop‑manual torque spec.
• Clear any DTCs and perform an idle relearn if required by the scan tool, the ECU will then re‑sync cam and crank.

The 2020 ASX’s MIVEC setup usually uses an intake and an exhaust cam sensor on its DOHC head, so if one fails, it’s worth checking the other and the shared wiring run. Keeping the top of the engine clean and leak‑free goes a long way to ensuring the sensors keep doing their job for many kilometres.

Popular questions about the 2020 Mitsubishi ASX camshaft sensor

Does the 2020 ASX have one or two camshaft sensors?
Most 2020 ASX models with the 4B11/4B12 DOHC MIVEC engines run two—one for the intake cam and one for the exhaust cam. Some catalogues list them as a shared part number because the pieces can interchange, but the engine typically uses a pair.

Is it safe to drive with a failing camshaft sensor?
It might run, but it can be hard to start, suddenly lose power, or stall. The ECU may default to limp mode. It’s best to get it scanned and sorted promptly to avoid being stranded.

Can the camshaft sensor be cleaned instead of replaced?
If the tip is just dirty, a careful wipe can help. But faults are often internal to the sensor or in the wiring. If codes return after checks and cleaning, replacement with an OEM‑spec unit is the proper fix.