Parts for your 2006 Lexus Is-Crank angle sensor

2006 Lexus IS crank-angle sensor: fitted, what it does, and how to look after it

Yes, a crank-angle sensor (often called a crankshaft position or CKP sensor) is fitted to the 2006 Lexus IS range, including IS 250 and IS 350 models with the 4GR‑FSE and 2GR‑FSE engines. This is confirmed by factory documentation that details the sensor’s role and wiring to the engine control module (ECM).

• Lexus IS 250/350 2006 Repair Manual (GSE20/21), Engine/Hybrid System – SFI – Crankshaft Position Sensor (CKP)
• Toyota/Lexus New Car Features (NCF) for 4GR‑FSE and 2GR‑FSE engines – Engine Control System, crankshaft angle detection
• Lexus IS 250/350 2006 Electrical Wiring Diagram (EWD) – Engine control, CKP sensor circuit to ECM

On the 2006 Lexus IS, the crank-angle sensor is the quiet achiever that keeps the whole show running on time. It reads a toothed wheel on the crank to tell the ECM exactly where the pistons are, so the car can fire spark and inject fuel with pinpoint timing. Without a clean signal from this sensor, the engine can be hard to start, run rough, or stall, and it’ll usually log fault codes like P0335.

There’s no routine service interval for the CKP sensor, it’s a solid-state part designed to last. That said, sensible maintenance around it pays off. Keep an eye out for oil leaks at the rear main area or front timing cover—oil contamination or grime on the connector can cause dodgy readings. During regular services, it’s worth a quick visual check of the sensor harness for chafing, brittle conduit, or loose clips, and make sure the connector is clean and clicks home firmly.

If the dash throws a check engine light or the car cranks but won’t fire, scan it before throwing parts at the problem. If testing points to the CKP sensor, replacement is straightforward for a competent DIYer but space can be tight. Disconnect the battery, unplug the connector, remove the retaining bolt, and withdraw the sensor. Lightly oil the O‑ring on the new unit and install it carefully to avoid nicks. Always follow torque specs and procedures from the Lexus repair manual, and clear codes after fitting. If the loom’s been stressed or soaked in oil, sort that at the same time—there’s no point fitting a new sensor to a crook connector.

Drivers who mainly do short, stop–start trips should be extra mindful of symptoms like intermittent stalling or sudden loss of tach signal. Catching a crank-angle sensor fault early can save a tow and keep the Lexus running sweet for many more kilometres.

• Where is the crank-angle sensor on a 2006 Lexus IS?
  The CKP sensor is mounted to the engine block facing the crankshaft reluctor wheel. On GR‑series V6 models (IS 250/350), it’s typically low on the block near the transmission bellhousing area. Access can vary, so a torch and small ratchet help.
• What are common symptoms of a failing crank-angle sensor?
  Hard starting, random stalling, misfires at idle, loss of power, and a dead tach during cranking are common. The ECM often logs codes like P0335/P0339. If the issue is intermittent, heat or vibration may be aggravating a marginal sensor or connector.
• Can it be driven with a faulty CKP sensor?
  It’s risky. Some faults cause sudden stall or no‑start conditions, which isn’t ideal on a motorway. If it’s playing up, get it checked and sorted promptly to avoid being stranded.