Parts for your 2017 Mitsubishi Outlander-Knock sensor

2017 Mitsubishi Outlander knock sensor — fitted, important, and worth keeping happy

Based on technical references — including the Mitsubishi Motors Outlander Service Manual (2016–2018, GG2W/GF7W/GF8W), Engine Electrical section “Knock Sensor (KS)”, the PHEV engine manual, and Mitsubishi ASA/CAPS parts catalogues — the 2017 Mitsubishi Outlander petrol models (2.0L 4B11, 2.4L 4B12, and 3.0L 6B31) and the PHEV are fitted with a knock sensor. These sources list the KS on the engine block and provide related DTCs (e.g., P0325–P0334). The 2.2L 4N14 diesel variant does not use a conventional knock sensor in the same way as the petrol engines.

For owners of petrol or PHEV 2017 Outlanders, the knock sensor is a quiet achiever. It “listens” for pinging (detonation) and tells the ECU to tweak ignition timing to protect the engine and keep it running sweet on Aussie and Kiwi fuels. That means better drivability, safer operation under load, and fuel economy that doesn’t go out the window.

It isn’t a regular replacement item, but it does deserve attention when servicing. If the Outlander starts to feel doughy, shows the check engine light with codes like P0325–P0334, pings on hills, or suddenly sips more fuel, the knock sensor or its wiring might be having a grizzle. A quick scan plus a visual once-over of the sensor and harness is smart practice.

• Location: bolted to the engine block (beneath the intake on 4-cyl engines, in the V of the block on the 3.0L V6).
• Common symptoms of trouble: pinging under load, reduced power, rougher idle, poorer economy, and stored DTCs.
• Basic care: keep connectors clean, ensure the loom isn’t rubbing or oil-soaked, and avoid aftermarket audio/earth mods that can introduce noise into the signal.

Replacement is straightforward for a pro and doable for a keen DIYer with the right gear. Always fit a quality sensor, seat it on a clean, dry mating surface, and torque it to spec (typically around the low-20s N·m for many Mitsubishi engines — check the exact spec in the Outlander workshop manual). Over-tightening can dull its sensitivity, under-tightening can cause false readings. Don’t use sealants or Teflon tape on the mounting face. After installation, clear codes and road test to confirm the ECU is happy and timing control is active.

Look after the knock sensor and the ECU can safely run the best timing the fuel allows — which is exactly what keeps the 2017 Outlander smooth, efficient, and ready for the next weekend mission.

Popular questions

Where is the knock sensor on a 2017 Mitsubishi Outlander?
On the 4-cylinder petrol and PHEV, it’s mounted to the engine block under the intake manifold area. On the 3.0L V6, it sits in the valley between the cylinder banks. Access can require removing intake components for a clean shot at the mounting bolt.

Does the knock sensor need regular replacement?
No, it’s not a scheduled item. Replace it only if it’s faulty or there’s wiring damage. During routine servicing, a quick scan for knock-related DTCs and a visual check of the connector and loom is plenty. If pinging or codes appear, test before you toss parts.

Is the diesel 2017 Outlander fitted with a knock sensor?
The 2.2L diesel doesn’t use a conventional petrol-style knock sensor. Diesel combustion is managed differently, so it relies on other control strategies rather than a standard KS to handle combustion noise and timing.