The crankshaft position sensor is generally mounted on the front of the engine block near the crankshaft pulley and timing cover, on the passenger side of the engine bay. This is where the sensor reads the crankshaft's position to coordinate ignition timing and fuel injection.
Across Elantra generations and engines—such as the 2.0L Nu, 1.6L Gamma II, and other variants—the exact mounting point is similar but may vary in orientation or accessibility. Some models are easier to reach from above with the engine cover removed, while others require a view from underneath after removing the splash shield.
Common CKP sensor location in the Elantra
The CKP sensor is typically mounted on the front of the engine block near the timing cover and the crankshaft pulley. Here are the spots you’re most likely to find it:
- Front of the engine block on the passenger (right) side, just above or beside the crankshaft pulley and timing cover, with the connector running toward the engine bay.
- Underneath the front of the engine near the transmission bell housing, which may be easier to access from beneath the vehicle on some models.
When in doubt, consult the owner's manual or a service manual for your exact year and engine code, as the precise bolt location and connector orientation can vary by model and market.
What it looks like and how to test
Appearance
The crankshaft position sensor is a small sensor, usually plastic-bodied, about an inch or two long, mounted to the engine with a single bolt. It has a short wiring harness with a multi-pin connector that plugs into the engine wiring harness.
Basic checks and replacement tips
If you suspect a faulty CKP sensor, start with a visual check of the wiring for cracks, oil intrusion, or loose connections. A scan for crankshaft-related DTCs (for example, P0335) can confirm a CKP problem. If replacement is required, disconnect the battery, remove the retaining bolt, unplug the connector, and swap in a new sensor, ensuring the sensor faces the correct direction toward the crankshaft gear.
Note: Always refer to the specific service manual for your Elantra’s year and engine to confirm torque specs and sensor orientation.
Summary
In most Hyundai Elantra models, the crankshaft position sensor sits on the front of the engine block near the timing cover and crank pulley, on the passenger side of the engine bay. Access may vary by engine and year, so check the service manual for your exact configuration. If you’re troubleshooting, inspect wiring, check diagnostic codes, and consult the manual before replacing components.