Parts for your 2005 Toyota Echo|yaris-Crank angle sensor

2005 Toyota Echo/Yaris Crank Angle Sensor (Crankshaft Position Sensor)

Based on Toyota’s own technical literature, the 2005 Toyota Echo/Yaris (NCP series with 1NZ‑FE 1.5L and 2NZ‑FE 1.3L petrol engines) is fitted with a crank angle sensor, commonly called the crankshaft position (CKP) sensor. Toyota identifies it as the NE sensor in the Engine Control System. References include the Toyota Repair Manual for 1NZ‑FE/2NZ‑FE Engine Control and the Toyota Electrical Wiring Diagram (EWD) for the NCP platform, as well as the Toyota electronic parts catalogue listing the CKP sensor for these engines.

On this model, the CKP sensor reads a toothed reluctor on the crankshaft to tell the engine control module exactly where the crank is in its rotation. That’s vital for spark timing and fuel injection, especially with VVT‑i doing its thing. If it goes out of spec, the car can be a pig to start, stumble at idle, or throw a check engine light with codes like P0335 or P0339.

Owners will find the sensor mounted on the timing chain cover, low on the front of the engine near the crank pulley. It’s a simple bolt‑in unit with an O‑ring and a two‑pin connector. There’s no routine replacement interval in Toyota’s schedule, it’s a “replace on condition” part. That said, a quick visual once in a while is smart—make sure the connector’s snug, wiring isn’t chafed, and there’s no oil weeping at the sensor boss.

• Typical symptoms of a failing CKP: extended cranking, intermittent stall, rough running, and MIL with P0335/P0339.
• Service tip: if oil contamination is present, address any front cover or sensor O‑ring leakage before refitting.
• Replacement advice: use a quality OEM‑equivalent sensor, lightly lubricate the O‑ring, seat it squarely, and snug the retaining bolt to factory spec.
• After replacement: clear codes, check live data for stable engine speed signal, and road test. No special relearn is usually required on these Toyota ECUs.

For DIYers under the bonnet, disconnect the battery before unplugging the sensor, keep the harness routed away from the drive belt, and avoid prying on the sensor tip. Workshops will typically confirm the fault by scan tool data and scope patterns before swapping parts. Looked after properly, the CKP on a 2005 Echo/Yaris is a fit‑and‑forget item that keeps the little Toyota running sweet across Aussie and Kiwi kilometres.

Popular questions

Where is the crank angle sensor on a 2005 Toyota Echo/Yaris?
It’s mounted low on the front of the engine, on the timing chain cover near the crankshaft pulley. From above, look down behind the right‑hand headlight area, from underneath, it’s easier to see with the splash shield off. It has a single small retaining bolt and a two‑pin connector.

Because space is tight, a small ratchet and extension help. Always route the wiring exactly as from factory so it can’t rub on the belt or pulley.

What are the common fault codes for a failing CKP on this model?
The most common are P0335 (Crankshaft Position Sensor “A” Circuit) and P0339 (Intermittent). These point to a missing or unstable crank signal—caused by a bad sensor, a damaged connector, wiring issues, or in rarer cases, a damaged reluctor wheel.

Before replacing the sensor, it’s worth checking for corrosion in the plug, oil intrusion, or a rubbed‑through harness near the front of the engine.

Can the CKP sensor be cleaned or should it be replaced?
If the tip is just lightly contaminated with oil mist, a careful wipe can restore a clean signal, but if the sensor has internal failure or the O‑ring leaks, replacement is the reliable fix. There’s no scheduled maintenance—only replace when symptoms or diagnostics indicate it.

Use an OEM or reputable aftermarket part. After installation, clear fault codes and confirm stable RPM on a scan tool during cranking and idle.