P0341 on a Lexus: Causes, Fixes & Repair Cost

🟠 Moderate severity · drivable

You can usually keep driving a Lexus with P0341, but rough idle or hard starting is possible, so get it checked soon.

What P0341 means on a Lexus

On a Lexus, P0341 means the engine computer sees a camshaft position signal from bank 1 that is outside the expected range. The sensor works with the VVT-i variable valve timing system to time fuel and ignition. When the reading drifts, you might notice a rough idle, hesitation, or a hard start.

Is P0341 common on Lexuss?

P0341 is not one of the most common Lexus codes, but it does appear on higher-mileage ES, RX, and IS models as the cam sensors age. Oil contamination in the connector and worn VVT-i parts are the usual causes. Most Lexus engines keep running fine while the light is on.

Commonly reported on: ES, RX, IS, GS.

Symptoms

Check engine light on
Rough idle or hesitation
Hard starting
Reduced fuel economy in some cases

Common causes

most common: Faulty camshaft position sensor
common: Oil in the sensor connector
common: Damaged wiring to the sensor
less common: Worn VVT-i or timing components

How to fix it

Fix	DIY?	Typical cost
Inspect and clean the cam sensor connector	Yes	$10–50
Replace the camshaft position sensor	Yes	$100–250
Have the VVT-i system checked if the code returns	Mechanic	$600–1800