Parts for your 2015 Mitsubishi Asx-Camshaft sensor

2015 Mitsubishi ASX camshaft sensor — what it does and how to look after it

Yes, the 2015 Mitsubishi ASX uses a camshaft position sensor (CMP). This is documented in the Mitsubishi Motors workshop manuals for ASX/Outlander Sport powertrains and shown in the Mitsubishi ASA electronic parts catalogue for the 2.0L petrol (MIVEC) and the 1.8L diesel variants. Common diagnostic listings (e.g., Autodata/Repco service info) also include cam sensor fault codes like P0340/P0341 for this model, confirming the part is fitted and monitored by the ECU.

On the ASX, the camshaft sensor tells the engine control unit exactly where the camshaft is relative to the crank. That lets the ECU fire the injectors sequentially, time spark events precisely, and command MIVEC/variable valve timing properly. When it’s happy, the engine starts crisply, idles smoothly, and uses less fuel. When it’s not, the timing strategy falls back and the car can feel flat, grumpy, or refuse to start.

Typical signs the cam sensor or its wiring is on the fritz include:

• Hard starting or a stall right after cranking
• Rough idle, hesitation, or misfires under load
• Sluggish performance and higher fuel use
• Check Engine Light with codes like P0340/P0341

It’s not a scheduled replacement item, but it does benefit from a bit of attention during servicing. Under the bonnet, have a squiz at the connector and loom near the top or timing end of the cylinder head. Look for oil weeps from the rocker cover, brittle conduit, rubbed wiring, or green/white corrosion in the plug. Keeping up with regular oil and filter changes also helps—clean oil reduces metallic fuzz and varnish that can upset magnetic sensors and VVT operation.

Before replacing the sensor, a quick diagnostic routine saves time and coin: scan for codes, check live cam/crank sync, and do a visual/continuity test on the harness. If the sensor’s cooked, disconnect the battery negative, pop off the engine cover, unplug the sensor, remove the retaining bolt, and withdraw the sensor. Lightly oil the new O-ring, install it squarely, refit the bolt to the workshop-manual torque, reconnect, clear codes, and perform an idle learn if prompted by the scan tool. Use genuine or high-quality OEM-equivalent parts to avoid intermittent dramas.

Most ASX petrol and diesel variants don’t need coding for a new CMP, the ECU will sync on start-up. If faults persist, check the crank sensor, timing marks/chain condition, and VVT solenoid operation as they all play together.

Where is the camshaft sensor on a 2015 ASX?

It’s typically mounted on the cylinder head near the timing end. On the 2.0L petrol, look at the top/side of the head under the engine cover, on the 1.8L diesel it’s in a similar head-mounted position. The exact spot varies slightly by engine code, so a quick peek in the service manual or a parts diagram makes it easy to pinpoint.

Is it safe to drive with a faulty camshaft sensor?

It may run, but it can be hard to start, stall unexpectedly, feel down on power, and chew more fuel. Because it can cut out at idle or junctions, it’s best to avoid driving until it’s diagnosed and fixed.

Does a new camshaft sensor need programming?

Usually no. On the ASX, the ECU typically relearns cam/crank sync automatically. Clear any stored codes after fitting and let it idle for a couple of minutes. Diesel variants and some software versions may prompt an idle learn or adaptation via a scan tool.