Parts for your 2024 Mitsubishi Asx-Knock sensor

2024 Mitsubishi ASX knock sensor: fitment, purpose and service tips

Yes, the 2024 Mitsubishi ASX is fitted with a knock sensor. This is confirmed by Mitsubishi Motors workshop literature for the ASX/RVR/Outlander Sport platform (GA-series), which details a piezoelectric knock sensor mounted to the engine block, and by the Mitsubishi ASA/EPC parts catalogue that lists a dedicated knock sensor for the 2.0L MIVEC petrol (4B11) used in AU/NZ models. Major technical data publishers and local parts catalogues (e.g., Autodata and trade catalogues used by Repco/NAPA) also list a knock sensor for ASX through MY2024, further validating fitment.

On the 2024 ASX, the knock sensor’s job is to “listen” for combustion knock (pinging) and let the ECU trim ignition timing before knock becomes harmful. It’s essentially engine insurance: by detecting the high-frequency vibrations that come with detonation, it protects pistons, rings and bearings, while helping the ECU extract the best performance and fuel efficiency from everyday 91 RON unleaded available in Australia and New Zealand.

It’s a robust, sealed part that isn’t a regular service item. During routine servicing, technicians typically check for stored fault codes and verify there’s no damage to the wiring loom or connector under the intake manifold where the sensor sits on the block. If the ASX throws a code like P0325/P0326/P0328, or the engine feels flat and thirsty with a persistent rattle under load, it’s time to diagnose the sensor and its harness. Replacement is straightforward with the right access and torque procedure, but care matters: the sensor must be cleanly seated on the block, tightened to factory spec, and the mating surface free of corrosion or debris, otherwise sensitivity is affected.

Owners will rarely need a knock sensor replacement unless there’s physical damage, water ingress, incorrect torque from past work, or a wiring fault. Good fuel quality, staying on top of oil leaks, and avoiding excessive engine bay washing (that can soak connectors) all help. If replacement is required, genuine or quality OE-equivalent sensors are the go, and it’s wise to clear codes and perform a road test to confirm timing control is behaving as expected.

• Common symptoms when attention’s needed:
  • Check engine light with knock-sensor DTCs
  • Noticeable pinging under load or uphill
  • Sluggish performance, increased fuel use

FAQs

Does the 2024 Mitsubishi ASX have a knock sensor?
Yes. Mitsubishi workshop manuals for the GA-series ASX and the Mitsubishi ASA parts listings show a dedicated knock sensor on the 2.0L MIVEC engine used in AU/NZ models. It’s mounted on the cylinder block beneath the intake side.

When should the knock sensor be replaced on a 2024 ASX?
It isn’t a scheduled replacement item. Replace only after proper diagnosis if there are knock-sensor fault codes (e.g., P0325–P0328), confirmed wiring/connector issues, or physical damage. Always fit to a clean block surface and torque to factory spec.

Can poor fuel cause knock-sensor issues on the ASX?
Lower-quality fuel can increase knock, which the sensor detects so the ECU can safely pull timing. That doesn’t usually harm the sensor, but if the engine persistently pings or feels down on power, a fuel quality change and a diagnostic scan are smart moves.