Parts for your 2001 Toyota Echo|yaris-Camshaft sensor

2001 Toyota Echo/Yaris Camshaft Sensor — Fitment, Purpose, and Service Tips

Yes, the 2001 Toyota Echo/Yaris uses a camshaft position sensor. Factory technical literature for the Echo/Yaris platform (covering the 1SZ‑FE 1.0L, 2NZ‑FE 1.3L, and 1NZ‑FE 1.5L engines) identifies a camshaft position sensor feeding the ECM with the “G” signal, paired with the crankshaft “NE” signal. The Toyota Engine Control System section lists related diagnostics (such as DTC P0340/P0341 for the camshaft sensor circuit), and the Electrical Wiring Diagram shows the Camshaft Position Sensor (often labelled “G2”) wired to the ECM. Parts catalogues for these engines also list a direct-fit camshaft sensor, confirming it’s a serviceable component on this model.

On the 2001 Echo/Yaris, the camshaft sensor’s job is to tell the engine computer exactly where the intake cam is in its rotation. With that info, the ECM can run true sequential fuel injection, time the spark precisely, and command intake VVT‑i accurately. That all pays off in quicker starts, smoother idle, crisp throttle response, better fuel economy, and lower emissions. If the sensor signal goes missing or messy, the car can still run, but you’ll likely cop longer crank times, a bit of roughness, limp or sluggish feel, and the check engine light with a code like P0340 or P0341.

There’s no routine maintenance interval for the sensor itself — it’s a solid‑state unit mounted on the cylinder head near the timing chain end, held by a small bolt and sealed by an O‑ring. During regular servicing, it’s worth a quick look: make sure the connector is clean and the harness isn’t chafed, and check for any oil weep around the O‑ring. Clean, correct‑grade engine oil is a big help too, because good oil keeps VVT‑i behaving, which makes the cam signal nice and steady.

When replacement is needed, go for a reputable or genuine sensor, fit a fresh O‑ring, and lightly oil the seal so it slides in without nicking. Wipe the bore clean, seat the sensor squarely, and snug the bolt to the repair‑manual spec — no gorilla‑tightening under the bonnet. After installation, clear any codes, start it up, and take a quick drive to confirm no warning lights and that it pulls cleanly through the revs. If a new sensor doesn’t sort a cam code, look further: wiring corrosion, a clogged VVT‑i oil control filter, or even a stretched timing chain can also upset the cam signal on higher‑kilometre cars.

• Toyota Echo/Yaris Factory Repair Manual (Engine Control System) — Camshaft Position Sensor diagnostics (e.g., DTC P0340/P0341)
• Toyota Electrical Wiring Diagram (EWD) — Camshaft Position Sensor “G2” circuit to ECM
• Toyota New Car Features — 1SZ‑FE/2NZ‑FE/1NZ‑FE engine management using NE (crank) and G (cam) signals, with VVT‑i control
• Genuine Toyota and aftermarket parts catalogues — Camshaft Position Sensor listed for 2001 Echo/Yaris by engine/VIN

Popular questions about 2001‑Toyota Echo/Yaris camshaft sensor

Does a 2001 Toyota Echo/Yaris actually have a camshaft sensor?
Yes. All common engines for this model year (1SZ‑FE, 2NZ‑FE, 1NZ‑FE) use a camshaft position sensor. It supplies the ECM with cam phase information for sequential injection, accurate ignition timing, and VVT‑i operation. The presence of related fault codes (like P0340/P0341) in Toyota’s factory diagnostics backs this up.

Where is the camshaft sensor on a 2001 Echo/Yaris?
It’s mounted on the cylinder head at the timing chain end, near the top of the engine. Look around the intake side close to the rocker cover — a small, single‑bolt sensor with an electrical connector and an O‑ring seal. Access is straightforward with basic hand tools.

What symptoms show a failing camshaft sensor on this model?
Common signs include longer cranking before it fires, rough idle, flat spots or hesitation, poorer fuel economy, and the check engine light. Scan tools often reveal P0340 or P0341. Keep in mind similar symptoms can also come from wiring faults, VVT‑i oil control issues, or timing chain wear, so a proper diagnosis is the go.