Parts for your 2008 Mitsubishi Lancer-Camshaft sensor

2008 Mitsubishi Lancer Camshaft Sensor

Yes, the 2008 Mitsubishi Lancer uses a camshaft position sensor. This is confirmed by Mitsubishi Motors’ 2008 Lancer service manual (engine electrical diagnostics listing DTCs such as P0340/P0345 for the camshaft position circuit) and OEM parts catalogues for the CJ-series Lancer with 4B11/4B12 engines. Most 2.0L 4B11 petrol models run a single camshaft sensor, while performance variants like the Evolution X (4B11T) use two—one for each cam—so the ECU can control MIVEC variable valve timing accurately.

The camshaft sensor on a 2008 Lancer tells the engine control unit exactly where the cam is in its rotation. Paired with the crank sensor, it lets the ECU time fuel injection and spark properly, and manage MIVEC. When it’s healthy, cold starts are crisp, idle is smooth, power delivery is clean, and fuel economy stays on point. When it starts to pack a sad, owners may notice hard starting, rough idle, hesitation, higher fuel use, or the check engine light with codes like P0340/P0345.

It’s not a scheduled replacement item in the Lancer’s service plan, but it’s worth a quick look under the bonnet at each service. Check the sensor connector for oil ingress, brittle loom tape, or green/white corrosion on the pins. Make sure the harness isn’t rubbing on the rocker cover or brackets. If oil is wicking up the plug, the sensor’s O-ring might be tired—replace the O-ring and clean the plug with proper electrical contact cleaner.

Replacement is a straightforward driveway job on most 4B11 cars: disconnect the battery, unplug the sensor, remove the retaining bolt, twist the sensor free, lightly oil the new O-ring, seat it square, and refit the bolt and plug. Clear any codes and take it for a run. If a fresh sensor doesn’t fix a no-start or misfire, look for broken wiring, a poor earth, or timing issues rather than throwing more parts at it. Using a quality OEM-equivalent sensor saves headaches—cheap copies can cause repeat faults or erratic timing data.

• Common clues: long cranking, rough idle, stalling at lights, poor fuel economy, and CEL with P0340/P0345.
• Service tip: keep connectors clean and secure, replace the O-ring if there’s any oil seepage.
• If in doubt, get live data checked—cam/crank correlation tells the real story.

Popular questions about 2008 Mitsubishi Lancer camshaft sensors

Where is the camshaft sensor on a 2008 Lancer?
On most 2.0L 4B11 models, it’s mounted at the end of the cylinder head near the timing cover—easy to spot from the top of the engine bay. Evolution X models use two sensors, one on the intake cam side and one on the exhaust cam side. Look for a small, bolt-on sensor with a two- or three-pin plug.

Access is usually straightforward: remove the engine cover, unplug the connector, and you’re right there with basic hand tools.

Can a bad camshaft sensor damage the engine?
It’s unlikely to cause mechanical damage by itself, but it can lead to poor running, misfires, and higher fuel use. Left unfixed, those issues can foul plugs and stress the catalytic converter. If the ECU can’t trust the signal, it may drop into a fallback mode, hurting performance and economy.

Sort faults promptly—diagnose with a scan tool, check the wiring, and replace the sensor if the signal is unstable.

Do I need to programme a new camshaft sensor?
Generally, no. A quality replacement plugs in and works without coding. After installation, clear any stored codes and let the ECU relearn trims with a short drive cycle. If faults return, check cam/crank correlation and wiring rather than assuming the new sensor is bad.