Two camshaft position sensors are typically used in modern engines with dual overhead camshafts. They’re usually mounted on or near each camshaft, one sensor reading the intake cam and the other reading the exhaust cam. The exact location varies by engine, but you’ll commonly find them in the timing cover area or on the top of the cylinder heads.
In practice, locations differ by manufacturer and model. Some engines place sensors in the timing cover at the front; others mount them at the end of each camshaft on the cylinder head, or on the back side of the head in a V-shaped configuration. This guide outlines common placements and how to locate them on your vehicle.
Common mounting locations by engine design
Engine designers place the sensors where they can reliably read a camshaft position signal while keeping wiring tidy. Here are the typical spots you’ll encounter.
- Inline-4 and other DOHC engines: Sensors are often mounted in the timing cover at the front of the engine, facing the cam pulley or gear so each sensor reads a tooth or segment on its camshaft as it turns.
- V-series engines (V6, V8, etc.): Each camshaft bank typically has its own sensor located on or near the cylinder-head edge corresponding to that bank, with wiring routed along the side of the engine.
- End-of-camshaft mounting: On several designs, sensors sit at the end of the camshafts behind the valve cover, reading a wheel or tone ring integrated into the camshaft.
Locations vary by model and generation, so always confirm with the factory service information for your specific vehicle.
How to locate the sensors on your vehicle
Use a systematic approach to identify the two camshaft position sensors on your car. The steps below help you trace them quickly.
- Consult the vehicle’s service manual or a reputable repair database using your exact make, model, and year to confirm sensor locations.
- Inspect the front and top of the engine for two electrical connectors or housings near the timing cover or at the back of the cylinder heads; there are usually two separate sensors, each with its own connector.
- For V engines, examine both cylinder-heads; you should see a sensor mounted on each head near the corresponding camshaft, with wiring harnesses feeding down the side of the engine bay.
- Use VIN-specific diagrams or decals under the hood if the location is not obvious; a flashlight can help in tight spots behind belts and pulleys.
If you still can’t locate them, seek a professional or reference the dealership’s maintenance resources. Exact placement differs across makes and models.
Summary
In most modern dual-overhead-cam engines, there are two camshaft position sensors—one for the intake camshaft and one for the exhaust camshaft. Their exact mounting is engine-dependent, but common locations include the timing cover front and the top or rear of the cylinder heads, with each bank in a V-engine typically having its own sensor. Always verify with the official repair information for your vehicle.