P0335 on a Hyundai: Causes, Fixes & Repair Cost

⚠️ Severe · not recommended to drive

The engine may crank without starting or stall unexpectedly, so have the Hyundai towed to a shop.

What P0335 means on a Hyundai

On a Hyundai, P0335 means the computer isn't getting the crankshaft position signal it needs for spark and fuel timing. The engine may crank without starting or stall unexpectedly while driving.

Is P0335 common on Hyundais?

Hyundai crankshaft sensors fail with age and heat, showing up on higher-mileage models like the Elantra and Sonata. Checking the connector and wiring before replacing the sensor avoids wasted parts.

Commonly reported on: Elantra, Sonata, Santa Fe, Tucson.

Symptoms

Engine cranks but won't start
Engine stalls while driving
Check engine light is on
No spark from the ignition system

Common causes

most common: Failed crankshaft position sensor
common: Heat damage to the sensor with age
common: Damaged wiring or connector near the sensor
less common: Loose sensor mounting changing the gap

How to fix it

Fix	DIY?	Typical cost
Inspect the connector and wiring, then replace the sensor	Yes	$50–180
Repair damaged wiring or the sensor connector	Yes	$20–150
Have a shop replace the sensor and clear the codes	Mechanic	$150–400