Parts for your 2022 Mitsubishi Eclipse cross-Knock sensor

2022 Mitsubishi Eclipse Cross Knock Sensor — what it does and how to look after it

Technical sources confirm the 2022 Mitsubishi Eclipse Cross is fitted with a knock sensor. The Mitsubishi Motors Workshop Manual for Eclipse Cross (GK/GL series, Engine/Engine Electrical and Engine Control sections) details a knock sensor (KS) input to the engine control module and includes diagnostics for KS-related DTCs such as P0325/P0328. The Mitsubishi electronic parts catalogue (ASA/EPC) also lists a dedicated knock sensor for the 1.5‑litre turbocharged petrol engine (4B40), confirming it’s an OEM component on this model.

On this 1.5T direct‑injected Eclipse Cross, the knock sensor is a piezoelectric microphone bolted to the block. It “listens” for abnormal combustion (detonation or pinging) and feeds that signal to the ECU. If the sensor hears knock, the ECU trims ignition timing and, when needed, enriches fuel or adjusts boost. That protects pistons and bearings, helps the engine cope with Aussie and Kiwi pump fuels (91/95/98 RON, including many E10 blends), and keeps performance crisp without risking damage.

There’s no scheduled maintenance for the knock sensor, but it deserves a bit of respect during servicing. Don’t blast it or its connector with high‑pressure water, and avoid oil or coolant soaking the area. If it’s ever removed, tighten it to factory torque with a torque wrench—over‑ or under‑tightening can dull its sensitivity. When chasing performance issues, a scan for codes P0325/P0328/P0330 is a smart first step. Signs of trouble include the MIL on, noticeable pinging under load, sluggish performance, poor fuel economy, or the car feeling like it’s pulling timing on hot days or steep climbs.

Replacement is straightforward for a trained tech: disconnect the battery, unplug the connector, swap the sensor, torque correctly, then clear codes and road‑test under light and then heavier load to verify the ECU’s knock control strategy behaves normally. On higher‑kilometre cars, it’s wise to inspect the harness for hardening or chafe and replace any brittle clips that can transmit engine noise incorrectly. Genuine or reputable OEM‑equivalent parts are recommended—cheap copies can misreport vibration and cause the ECU to run overly conservative timing. Treated right, the factory knock sensor will typically last the life of the engine.

• Common symptoms: MIL on, pinging, reduced power, rough running, higher fuel use.
• Best practice: keep the connector clean and dry, avoid over‑tightening, use quality parts.

Popular questions about the 2022 Mitsubishi Eclipse Cross knock sensor

Does the 2022 Eclipse Cross actually have a knock sensor?
Yes. The factory workshop manual includes knock sensor diagnostics, and the Mitsubishi parts catalogue lists a knock sensor for the 1.5‑litre turbo engine. It’s part of the ECU’s detonation control strategy.

When should the knock sensor be replaced?
It isn’t a routine service item. Replace it if there are fault codes (like P0325/P0328), confirmed sensor failure in testing, visible damage, or wiring faults that can’t be rectified without replacement. Always verify with proper diagnostics before fitting a new one.

Is it safe to drive with a bad knock sensor?
The ECU may default to safer, retarded timing, which reduces power and can increase fuel use. Short trips to a workshop are usually fine, but prolonged driving risks poor performance and, if the engine does knock undetected, potential damage. Get it checked promptly.