Parts for your 2017 Mitsubishi Asx-Camshaft sensor

2017 Mitsubishi ASX Camshaft Sensor — What It Does and How to Look After It

Yes, the 2017 Mitsubishi ASX is fitted with a camshaft position sensor. This is documented in Mitsubishi’s OEM workshop material (RVR/ASX/Outlander Sport MY15–MY17 Service Manual, Engine Electrical – Camshaft Position Sensor). The Mitsubishi ASA parts catalogue also lists a camshaft position sensor across common ASX engines (2.0L 4B11 petrol, 1.6L 4A92 petrol, and 1.8/2.2L 4N1-series diesel). Independent technical references, including the Haynes ASX 2010–2019 manual and professional databases like Autodata, identify the CMP sensor and related DTCs (such as P0340 and P0341) for this model.

On this ASX, the camshaft sensor keeps the engine management on song by telling the ECU exactly where the camshaft sits in its rotation. That lets the ECU time the fuel injection and ignition properly and manage MIVEC variable valve timing on petrol variants. The result is crisp starts, smooth idle, decent economy, and low emissions. Diesel variants also use the sensor for precise injection control.

The sensor typically mounts on the cylinder head near the cam cover. Depending on engine variant, there may be one or two sensors. While it’s a solid-state item with no scheduled replacement interval, it benefits from a quick check during servicing: make sure the connector is snug, wiring isn’t chafed, and there’s no oil weeping from the rocker cover into the plug. Good oil quality and timely changes also help, as sludge and varnish can interfere with signal quality indirectly.

Signs it’s playing up include hard starting (hot or cold), uneven idle, flat spots, poor fuel economy, and the check engine lamp. Common codes are P0340/P0341. Before throwing parts at it, a tech should scan live data, confirm power/earth/signal at the connector, and inspect the trigger wheel and loom. Many drivability hiccups turn out to be wiring or oil contamination at the plug.

When replacement is needed, owners can choose genuine Mitsubishi or reputable aftermarket. The job is usually straightforward: disconnect the battery, unplug the sensor, remove the retaining fastener, swap the O-ring if supplied, lightly oil the seal, and refit. Follow workshop-manual torque for the bolt and avoid over-tightening into the alloy head. After installation, clear codes and verify with a road test and live data. Given how central this sensor is to timing, skimping on quality or diagnostics can lead to repeat faults and wasted kilometres.

• Typical symptoms: hard start, rough idle, misfire feel, poor economy, MIL on.
• Good practice: inspect wiring/connector each service, address any oil leaks promptly.
• Diagnostics first: scan, scope if available, then replace only when confirmed faulty.

FAQs

Where is the camshaft sensor on a 2017 Mitsubishi ASX?
It’s mounted on the cylinder head near the cam cover. On petrol MIVEC variants it’s typically on the top or end of the head, some engines run one sensor, others may have an additional sensor depending on configuration. Access is usually from above after removing engine covers.

What are the common signs of a failing camshaft sensor on the ASX?
Expect hard starting, rough idle, hesitation on take-off, poorer fuel economy, and a check engine light. Fault codes like P0340 or P0341 are common. Always check the wiring and connector for oil contamination or damage before replacing the sensor.

Can the ASX be driven with a bad camshaft sensor?
It may still run, sometimes in a limp or fallback mode, but performance, economy, and emissions suffer, and stalling can occur. It’s best to diagnose and fix promptly to avoid being stranded and to protect the catalytic converter on petrol models.