In most modern cars, the camshaft position sensor (CPS) is mounted near the camshaft itself, typically on the timing cover or cylinder head, and can be at the front of the engine or, in some designs, toward the rear near the firewall.
The camshaft position sensor monitors the camshaft's position to help the engine control unit synchronize fuel injection and ignition. The exact physical location depends on the engine family and vehicle design; check the service manual or VIN-specific diagrams for your model.
Common locations by engine layout
These are the typical places you’ll find the CPS on modern engines, with placements guided by whether the engine uses one or more camshafts and how the timing mechanism is configured.
DOHC and V‑type engines
In many dual overhead cam (DOHC) and V‑type engines, the CPS is mounted on the cylinder head or the front timing cover, aimed at a reluctor ring on the camshaft. Some designs place it on the back of the engine near the firewall.
- Front of the engine, on or near the timing cover beside the timing chain/belt
- Side of the cylinder head near the cam gear area
- Rear of the engine on the valve cover side for certain makes
Because placements vary, always confirm with the official diagrams for your specific vehicle. If you’re replacing the sensor, ensure you obtain the correct part number for your engine family.
SOHC and inline engines
Single overhead cam (SOHC) or inline engines commonly place the CPS on the timing cover or near the cam gear, sometimes integrated with the valve cover area. In belt-driven engines, the sensor may sit on the outside edge of the timing cover.
- Front edge of the timing cover on inline engines
- Near the back of the head near the firewall for some designs
- Shared connector with other sensors in modular harnesses
If you can’t spot it visually, consult the owner’s manual or a service manual; many vehicles have access panels or require removing a cover to reach the sensor.
How to locate it quickly on most cars
Start with the obvious: follow the wiring harness from the ignition area toward the front of the engine. Look for a small electronic sensor plugged into a short harness that terminates near the timing cover or cylinder head.
Note that some modern vehicles use multiple sensors or a single sensor that serves both camshafts on engines with dual cams. For precise location and replacement steps, reference the vehicle’s service manual or dealership diagrams.
Summary
The camshaft position sensor is generally found near the camshaft either on the timing cover, cylinder head, or occasionally toward the rear of the engine. Exact placement varies by engine design and manufacturer, so consult the manual for your specific vehicle if you’re diagnosing or replacing it.
What happens when a camshaft sensor goes bad while driving?
Poor Acceleration and Performance: With incorrect data feeding into the engine system, you might notice sluggish acceleration or reduced power during drives. Reduced Fuel Efficiency: Faulty sensors can lead to inefficient fuel combustion, resulting in poor mileage and higher costs at the pump.
How much does it cost to replace a camshaft position sensor?
The average cost for a Camshaft Position Sensor Replacement is between $214 and $321. Labor costs are estimated between $105 and $154 while parts are priced between $108 and $167. This range does not include taxes and fees, and does not factor in your unique location. Related repairs may also be needed.
What are the 7 symptoms of a bad camshaft position sensor?
Position sensor is power loss. If the sensor isn't giving accurate info to the ECU. Your engine struggles to get the timing right for fuel injection. And spark.
Can I change a camshaft sensor myself?
Changing a cam sensor isn't an overly complicated job, but it requires some basic tools and a code reader to get the job done right.