Parts for your 2006 Mitsubishi Lancer-Crank angle sensor

2006 Mitsubishi Lancer crank angle sensor – what it does and when to replace it

Based on technical sources including the Mitsubishi Motors Lancer (CH/CS, 2002–2007) Workshop Manual – Engine Electrical, the Mitsubishi ASA electronic parts catalogue, and the Gregory’s/Haynes Lancer 2002–2007 repair manual, the 2006 Mitsubishi Lancer is fitted with a crank angle sensor (also called a crankshaft position or CKP sensor). It’s a critical input to the engine control unit across the common 2006 Lancer engines (such as 4G18/4G94/4G69 and 4G63T Evo variants). Depending on engine, the sensor is typically mounted near the crank pulley behind the lower timing cover, or at the bellhousing reading a trigger wheel.

The crank angle sensor tells the ECU exactly where the crankshaft is and how fast it’s spinning. That lets the ECU fire the coils and injectors at the right moment, sync with the cam sensor, and manage cold starts, idle quality, and knock control. If it goes out of whack, the car may crank but not start, stall when hot, hesitate, or log fault codes (often P0335–P0339). Left alone, it can strand the vehicle because the ECU won’t know when to spark or inject.

It’s not a scheduled service item, but it’s smart to give it a look whenever the timing belt/drive belts are off, or during a major service. Keep the connector clean and clipped firmly, check the wiring for chafe or oil saturation, and make sure nearby oil leaks are sorted so they don’t contaminate the sensor. If diagnosing, a scan tool can confirm RPM signal during cranking, waveform testing with a scope is even better.

Replacement is straightforward for a competent DIYer or workshop:

• Disconnect the battery and allow the engine to cool.
• Gain access (often removing the lower splash shield and, on some engines, the lower timing cover).
• Unplug the sensor, remove the retaining bolt(s), and swap in an OEM-quality part with a clean mounting face.
• Route the loom as per factory clips, avoid tight bends or rubbing points.
• Clear fault codes and perform an idle relearn if needed (many Lancers self-learn, follow workshop manual steps).

Quick signs it’s time to act:

• Hard starting or intermittent no-start when warm
• Sudden stalling, tachometer dropouts, or misfire-like surging
• Check engine light with CKP-related DTCs

Popular questions

Does a 2006 Mitsubishi Lancer have a crank angle sensor, and where is it?
Yes. All 2006 Lancer petrol engines use a crank angle/position sensor. On most non-turbo models it’s mounted at the front of the engine near the crank pulley behind the lower timing cover, some variants read a trigger wheel at the bellhousing. Access is usually from underneath with the splash shield removed.

What are the common symptoms of a failing crank angle sensor on a 2006 Lancer?
Typical symptoms include a no-start (especially when hot), random stalling, rough idle, hesitation, poor fuel economy, and a check engine light with codes like P0335–P0339. The tachometer may drop to zero abruptly during a stall. If the signal is lost, the ECU can’t time spark and injection properly.

Do I need special programming or a relearn after replacing the sensor?
Generally, no special programming is required on most 2006 Lancer variants. Clear any stored codes, check live RPM during cranking, and perform an idle relearn if the manual specifies (often a short warm-up and idle period with accessories off). If issues persist, recheck wiring, mounting gap, and part quality.