Parts for your 2021 Mitsubishi Asx-Crank angle sensor

2021 Mitsubishi ASX Crank Angle Sensor

Technical sources confirm the 2021 Mitsubishi ASX is fitted with a crank angle sensor (commonly called a crankshaft position or CKP sensor). The Mitsubishi Motors Service Manual for the ASX/RVR/Outlander Sport (4B11/4B12 engines) details the CKP sensor in the Engine Electrical section and includes DTCs such as P0335. The Mitsubishi ASA electronic parts catalogue for GA1W/GA2W ASX models also lists a dedicated “Sensor, Crankshaft Position”. These factory references make it clear the sensor is relevant and used on this vehicle.

On the 2021 ASX, the crank angle sensor’s job is to track the exact position and speed of the crankshaft, letting the engine control unit time fuel injection and spark with pinpoint accuracy. Working alongside the camshaft position sensor, it keeps the MIVEC timing strategy and ignition perfectly synced, so the 2.0-litre petrol engine starts crisply, idles smoothly and runs efficiently. The sensor reads a trigger wheel on the crank via a magnetic pickup mounted through the timing chain cover at the lower front of the engine.

It isn’t a scheduled replacement item, but it does deserve some attention during regular servicing. A quick visual check of the sensor body, loom and connector under the bonnet can prevent dramas later. Look for oil contamination, brittle conduit, chafing against brackets, or loose clips. Because it’s a precision magnetic sensor, keeping metal debris away from the tip helps maintain a clean signal.

• Typical symptoms of a failing CKP: intermittent no-start or stalling when warm, rough idle, poor acceleration, misfires, and the MIL on with codes like P0335/P0339.
• Good practice: scan for stored codes at service time, and check live data for crank rpm during cranking if a hard-start complaint appears.

If replacement is required, it’s a straightforward job for a tech. Disconnect the battery, safely raise the vehicle if needed, locate the sensor at the lower front of the engine, unplug the connector, remove the retaining bolt, and withdraw the sensor. Lightly oil a new O-ring, install the new unit squarely, route the harness exactly as per factory to avoid heat and rub points, and tighten to the workshop manual spec. Clear fault codes and confirm clean crank signal and normal start-up. If the trigger wheel or timing cover has been disturbed, follow any relearn procedures noted in the service manual using a scan tool.

Genuine or high-quality aftermarket sensors are recommended for signal integrity. With simple inspection and correct fitment, the ASX’s crank angle sensor should provide years of reliable service across Aussie and Kiwi conditions.

Where is the crank angle sensor on a 2021 ASX?

It’s mounted through the timing chain cover at the lower front of the engine, reading a toothed trigger on the crankshaft. Access is typically from the front/underneath, near the crank pulley area. The harness runs up to the engine loom with a sealed connector.

Is the crank angle sensor a regular service item on the ASX?

No. There’s no scheduled replacement interval. During routine servicing, a quick check of the wiring, connector condition and signs of oil or metal debris is wise. Replacement is only needed if faults are present or diagnostics point to a weak or failed signal.

What are common signs the ASX crank angle sensor is failing?

Expect intermittent no-start, sudden stalling after warm-up, rough idle, hesitation and the check engine light. Scan tools often show P0335/P0339 and may report no crank rpm during cranking. If these show up, proper testing before replacement is the best move.