Parts for your 2025 Mitsubishi Asx-Crank angle sensor

2025 Mitsubishi ASX crank angle sensor – what it does and when to service it

Yes, the 2025 Mitsubishi ASX uses a crank angle sensor (often called a crankshaft position or CKP sensor). This is confirmed by technical literature that lists the CKP among engine control module inputs across the ASX line-up: Mitsubishi Motors Service Manual for the 4B11 MIVEC 2.0 petrol (Engine Control – Crankshaft Position Sensor), the Mitsubishi ASA parts catalogue entries for ASX/RVR/Outlander Sport, and the Renault-based ASX (2023–) workshop documentation for Captur-derived powertrains, which likewise details a CKP sensor in the engine management system.

On the 2025 ASX, the crank angle sensor tracks the crankshaft’s exact position and speed so the ECU can fire spark and inject fuel at the right moment, sync variable valve timing, and monitor for misfire. It’s the timing gatekeeper—without a clean CKP signal, the engine may crank but won’t start, or it’ll stumble and go into limp mode. Most ASX engines use a magnetic or Hall-effect sensor reading a toothed reluctor wheel on the crank.

There’s no routine replacement interval for the CKP, it’s a “fit and forget” part that’s checked when symptoms or fault codes show up. Typical tells include:

• Hard starting or no start when hot or cold
• Rough idle, hesitation, or sudden cut-out while driving
• Check engine light with codes like P0335/P0336
• Poor fuel economy and sluggish performance

Good servicing practice on a 2025 ASX includes a quick visual of the sensor area for oil seepage at the O-ring, damage to the connector, or chafed wiring under the bonnet. If diagnosing a fault, confirm 5 V reference, ground integrity, and signal with a scan tool or scope rather than guessing.

When replacement is needed, go for genuine or OEM-quality. On the 2.0-litre petrol fitted to many AU/NZ cars, the sensor is typically mounted low on the block near the crank pulley, on the Captur-based engines used in some markets, it may be at the bellhousing or behind the front pulley. Steps worth following:

1. Disconnect the battery, unplug the connector, remove the retaining bolt, and withdraw the sensor carefully.
2. Clean the mounting face and fit a new O-ring if specified, set the air gap if the design requires it.
3. Torque to spec and clear codes, perform a crank pattern/CKP relearn with a capable scan tool where applicable.

A brief road test and live-data check (steady RPM signal, no dropouts) wraps it up. Kept clean and connected, a CKP sensor should run reliably for many hundreds of thousands of kilometres.

FAQs

Where is the crank angle sensor on a 2025 Mitsubishi ASX?
On ASX models with the 2.0-litre petrol common to Australia and New Zealand, it’s usually mounted low on the engine block near the crank pulley. On Captur-based turbo or hybrid variants used in some markets, it’s commonly at the gearbox bellhousing or behind the front crank pulley. Access is from under the vehicle or through the wheel arch, depending on engine and splash shields.

Do you need to perform a relearn after replacing the sensor?
Often, yes. Many ASX ECUs support a crankshaft position relearn to align the new sensor’s signal with the stored profile. Some will settle after a few drive cycles, but using a proper scan tool to run the procedure helps avoid rough running, misfire flags, or a lingering check engine light.

What are the signs of a failing crank angle sensor?
Hard starting, random stalling, rough idle, surging, and poor fuel economy are common. The check engine light may set codes like P0335/P0336. If the sensor signal drops out entirely, the car may crank but never fire. Always confirm with live data and wiring checks before swapping parts.