Parts for your 2014 Mitsubishi Asx-Camshaft sensor

2014 Mitsubishi ASX camshaft sensor — purpose, fitment and service tips

Based on Mitsubishi technical documentation — including the 2014 ASX/RVR/Outlander Sport factory service manual (engine electrical section) and Mitsubishi’s ASA electronic parts catalogue — the 2014 Mitsubishi ASX is fitted with a camshaft position sensor (CMP). Both common engines for this model year, the 2.0L petrol (4B11/MIVEC) and selected diesel variants (4N1-series), use a CMP to manage sequential fuel injection, spark timing and MIVEC/valve timing control. It’s absolutely relevant to this vehicle.

The camshaft sensor keeps the ECU in the loop about exactly where the camshaft is, relative to the crank. That lets the ASX fire injectors and ignition at the right moment and adjust valve timing for smooth starts, decent fuel economy and strong mid-range pull. When the CMP signal goes missing or erratic, the ASX can be hard to start, idle roughly, feel gutless or stall, and it’ll usually light the check engine lamp with codes like P0340/P0341 or, where correlation’s affected, P0016–P0018.

There’s no scheduled replacement for the camshaft sensor — it’s a solid-state item and generally lasts the distance. As part of regular servicing, it’s smart to:

• Keep engine oil changes on time, dirty oil and varnish can affect cam timing behaviour and sensor environments.
• Inspect the sensor connector and harness under the bonnet for heat fatigue, brittle clips or oil weep at the O-ring.
• If a fault appears, confirm power, ground and signal at the plug before condemning the sensor, wiring and timing issues can mimic a bad CMP.

Replacement is straightforward for most DIYers. Disconnect the battery negative, locate the sensor on the cylinder head (varies slightly by engine), unplug the connector, remove the retaining bolt, and ease the sensor out. Lightly oil a new O-ring, seat the new sensor squarely, refit the bolt and reconnect. Clear fault codes and, if applicable, perform an idle/ECU relearn as per the workshop manual. Use quality OEM-equivalent parts, cheap copies can give flaky signals and recurring faults.

If symptoms persist after replacement, it’s worth checking cam/crank correlation and the timing chain/belt condition and alignment. A trusted technician with a scope can verify the signal quickly and save guesswork.

• Technical sources referenced: Mitsubishi Motors Factory Service Manual (2014 ASX/RVR/Outlander Sport, Engine Electrical/CMP), Mitsubishi ASA Electronic Parts Catalogue listings for CMP on 4B11 and 4N1 engines.

Popular questions about the 2014 Mitsubishi ASX camshaft sensor

Where is the camshaft sensor on a 2014 ASX?
The CMP is mounted on the cylinder head, reading a target on the camshaft. On the 2.0L petrol 4B11 it’s typically at the top/front of the engine near the cam cover. Access is from the top under the bonnet, no need to remove major components, just the engine cover if fitted.

Does a new camshaft sensor need programming?
Normally, no. The ASX recognises a correct sensor without coding. After fitting, clear any stored fault codes and let the ECU do a brief idle relearn. If codes return, check wiring integrity and cam/crank correlation.

Is it safe to drive with a faulty camshaft sensor?
If it’s only intermittent, the car may still run but it can stall or lose power, which isn’t ideal on NZ or Aussie roads. Continued driving can also mask other issues. Best to diagnose and sort it promptly.