Parts for your 2024 Mitsubishi Eclipse cross-Knock sensor

2024 Mitsubishi Eclipse Cross Knock Sensor: What It Does and How to Look After It

Yes, the 2024 Mitsubishi Eclipse Cross is fitted with a knock sensor. Technical sources that document this include: the Mitsubishi Motors Eclipse Cross Service Manual (GK/GL series, updated through MY2024, Engine/Engine Control sections), which describes knock-sensor function and diagnostics (including DTCs such as P0325–P0334), the Mitsubishi Electronic Parts Catalogue (ASA/CAPS) for the 4B40 1.5L turbo petrol, which lists a knock sensor mounted to the cylinder block, and major aftermarket catalogues used in Australia and New Zealand (e.g., NTK/NGK and Bosch) that specify a replacement knock sensor for Eclipse Cross 1.5T models from 2018 onwards.

On this turbocharged, direct-injection 1.5L MIVEC engine, the knock sensor is the quiet achiever. It “listens” for knock (pre‑ignition or detonation) through a piezoelectric element bolted to the block, and the ECU trims ignition timing and boost to keep the engine safe and smooth on our variable Aussie and Kiwi fuels. That lets the Eclipse Cross run happily on 91–98 RON without nasty pinging, while protecting pistons and keeping emissions and economy in check.

There’s no scheduled replacement interval for the knock sensor, but it’s smart to consider it during servicing:

• Symptoms of trouble: check engine light with codes like P0325, sluggish performance, poorer fuel economy, a “soft” throttle feel as the ECU pulls timing, or persistent ping under load.
• Basic checks first: poor fuel quality, carbon build‑up, or intake leaks can invite knock. Rule those out before condemning the sensor.
• Inspection: during major services, eyeball the harness and connector under the intake side of the block for oil/coolant contamination, chafing, or loose fit. Clean with electrical contact cleaner only.
• Replacement tips: use a quality OE‑equivalent sensor and a new sealing washer if specified. Mounting torque is critical—over‑ or under‑tightening can skew readings—so follow the factory spec and keep the mating surface clean and dry.
• After install: clear fault codes, perform an ECU relearn/drive cycle, and verify no new knock‑related trims or codes appear.

For most owners, the knock sensor is fit‑and‑forget. But when the Eclipse Cross feels a bit lazy or throws a P0325, a quick diagnostic scan and a look under the bonnet can save time and protect the engine. If it does need replacing, it’s a straightforward job for a technician and restores the crisp, knock‑free performance the 1.5T is known for.

Popular questions

Where is the knock sensor on a 2024 Eclipse Cross?
It’s mounted on the engine block on the intake side, beneath the manifold area. Access typically requires removing some intake ducting and working from above or below depending on tools and hoist access. The exact approach varies slightly between 2WD and AWD models due to underbody clearance.

What are the signs of a failing knock sensor?
Common signs include a check engine light (often P0325), reduced power as the ECU pulls timing, rougher running under load, and worse fuel economy. Note that audible ping can also be caused by low‑octane or stale fuel, carbon build‑up, or intake leaks—so diagnose carefully before replacing the sensor.

Does the knock sensor need routine servicing?
There’s no routine replacement interval. During major services, it’s worth inspecting the connector and loom for damage or contamination, especially after cooling‑system or intake work. Replace the sensor only if it’s out of spec or logging related fault codes, and always use the correct torque on installation.