Parts for your 2019 Mitsubishi Asx-Crank angle sensor

2019 Mitsubishi ASX crank angle sensor: what it does and when to replace it

Yes, the 2019 Mitsubishi ASX is fitted with a crank angle sensor (more commonly called the crankshaft position sensor or CKP). Technical references including the Mitsubishi Motors workshop manual for ASX/RVR models with the 4B11/4B12 MIVEC petrol engines, as well as Autodata/HaynesPro service data and OEM parts catalogues used by dealers and local parts suppliers, confirm the presence of this sensor. It’s a core input for the engine control unit, so it’s absolutely relevant on this model year.

This little sensor sits by the front of the engine, reading a toothed wheel on the crankshaft. By tracking crank angle and speed in real time, the ECU times spark and fuel precisely, coordinates variable valve timing, and manages start-up and idle stability. If it loses the signal, the ASX may crank but not start, drop into a rough idle, or cut out unexpectedly. Modern safety and emissions control also lean on an accurate CKP signal, so when it’s unhappy, the check engine light usually comes on.

It’s not a scheduled service item, but it benefits from a bit of attention during regular servicing. Under the bonnet, a tech will typically check the CKP wiring loom where it runs past the timing cover and accessories—heat, oil mist, and vibration can fatigue the insulation or loosen the connector. Keeping front engine oil leaks (like a weepy crank seal) in check helps protect the sensor from contamination.

When replacement is needed—often flagged by fault codes like P0335 to P0339, hard starting, stalling, or misfires—it’s a straightforward job for a workshop. Best practice is to fit a quality OEM-spec sensor, replace the O-ring, lightly oil the new seal, and torque the retaining fastener correctly. After installation, clearing codes and performing an idle relearn is wise. Because the ASX’s hall-effect CKP isn’t adjustable, there’s no “gap set”, if the fault persists, the loom or trigger wheel needs a closer look.

Drivers in Australia and New Zealand can expect a CKP to last many years and kilometres. To keep things sweet: ensure the battery and earths are healthy, fix oil leaks early, and ask the workshop to scan the ECU if any starting quirks or random cut-outs show up.

• Typical symptoms of CKP trouble: hard start/no start, intermittent stalling, rough idle, misfire, poor fuel economy, and MIL with P0335–P0339.
• Good practice: inspect wiring at each service, use OEM-spec parts, and perform an idle relearn after replacement.

Popular questions about the 2019 Mitsubishi ASX crank angle sensor

Where is the crank angle sensor located on a 2019 ASX?
It’s mounted at the front of the engine near the crank pulley/timing cover, reading a reluctor wheel on the crankshaft. Access is usually from the front or underside with the splash shield removed. A technician can spot the small sensor body with a two‑pin or three‑pin plug leading into the engine loom.

What fault codes point to a bad crank angle sensor?
Common codes include P0335 (Crankshaft Position Sensor A circuit), P0336 (range/performance), and sometimes related intermittent codes like P0337–P0339. These can also be triggered by wiring damage, poor earths, or a weak battery, so testing the circuit and power/ground is part of a proper diagnosis.

Does the crank angle sensor need regular servicing?
No scheduled replacement is specified. It’s “inspect and replace if faulty.” During routine servicing, a quick check of the connector and nearby loom, plus addressing any oil leaks, is all that’s needed to prolong its life.