Parts for your 2001 Toyota Crown-Crank angle sensor

2001 Toyota Crown crank-angle sensor: purpose, servicing and replacement

Based on Toyota’s own technical literature, the 2001 Toyota Crown (S170 series, typically fitted with 1G‑FE VVT‑i, 1JZ‑FSE or 2JZ‑FSE engines) does use a crank‑angle sensor. In Toyota documentation it’s commonly called the crankshaft position sensor and identified by the “NE” signal. The 2001 Crown Electrical Wiring Diagram, along with the Engine Control System sections in the 1G‑FE and 1JZ/2JZ repair manuals, show the NE sensor feeding the ECM for ignition and injection control, and they list OBD‑II DTCs P0335–P0339 for related faults. So yes—this part is absolutely relevant on a 2001 Toyota Crown.

The crank‑angle sensor’s job is to tell the engine computer exactly where the crankshaft is and how fast it’s spinning. The ECM uses that info to fire the coils at the right moment, time the fuel injection, manage VVT‑i, and detect misfires. If the signal goes missing or erratic, the car can be hard to start, stall, or run roughly, and the check engine light will likely pop on.

There’s no scheduled replacement interval for the sensor on a Crown, it’s a “replace on failure” item. As part of regular servicing, it’s smart to do a quick visual once‑over: check the connector for corrosion or broken locks, look for oil wicking up the harness, and make sure the sensor body isn’t soaked in oil from a nearby seal. If you’re chasing intermittent stalling or a no‑start with codes like P0335, test the sensor output and harness continuity before throwing parts at it.

• Common symptoms: long crank/no start, random stalling, rough idle, poor fuel economy, dead tach, and DTCs P0335–P0339.
• Location notes: on JZ engines, the NE sensor sits at the front near the crank/timing area, on some 1G‑FE variants it’s mounted to the block. Access varies by engine.
• Replacement tips: disconnect the battery, unplug the connector, remove the retaining bolt, and ease the sensor out. Lightly oil the new O‑ring before fitting. Route the loom exactly as per factory to avoid rubbing. Clear codes and verify live data for a clean NE signal on restart.

If the vehicle has seen lots of kilometres or heat, consider replacing the sensor pre‑emptively when you’re already in there for timing belt or front seal work on JZ engines. Use quality OEM‑equivalent parts and follow the Toyota repair manual for torque and clearance specs—easy done, no dramas.

Popular questions

Where is the crank‑angle sensor on a 2001 Toyota Crown?
On JZ‑series engines (1JZ‑FSE/2JZ‑FSE), it’s typically mounted at the front of the engine reading a toothed wheel on the crank—access is around the timing cover area. Some 1G‑FE variants place it on the block. Always confirm by engine code and check the Toyota EWD/repair manual diagrams.

What are the tell‑tale signs it’s failing?
Hard starting, random cut‑outs, rough idle, poor fuel use, an inoperative tacho, and fault codes P0335–P0339 are the big clues. If the Crown cranks but won’t fire and there’s no RPM shown in scan data, the crank‑angle sensor or its wiring is a prime suspect.

Does the ECM need a relearn after sensor replacement?
No special coding is usually required on this model. Fit the new sensor, clear any stored codes, and let the engine idle so trims settle. If the battery was disconnected, the ECM will relearn idle over a short drive without fuss.