Parts for your 2014 Toyota Corolla-Crank angle sensor

2014 Toyota Corolla crank angle sensor — purpose, service advice, and FAQs

Based on Toyota technical documentation, the 2014 Toyota Corolla (E170 series) uses a crank angle sensor, referred to by Toyota as the Crankshaft Position Sensor (CKP). The Toyota Repair Manual and New Car Features for the 1ZR-FE/2ZR-FE/2ZR-FAE engines describe the CKP as a primary input for ignition and fuel control, and the official Electrical Wiring Diagram shows the CKP (NE signal) wired directly to the ECM. So yes—this model is fitted with a crank angle sensor.

On the 2014 Corolla, the crank angle sensor tracks the crankshaft’s exact position and speed. The ECU uses this signal to time spark and fuel injection precisely, to run VVT-i, and to detect misfires. Paired with the camshaft sensor, it gives the ECU a complete picture of engine phase, which keeps cold starts clean, throttle response crisp and fuel economy tidy.

It’s a solid-state sensor mounted to the engine block, reading a toothed reluctor on the crank. While it isn’t a scheduled service item, it benefits from a quick look during regular servicing: check the connector for corrosion, the harness for chafing, and the area for oil seepage that can contaminate the plug. Keeping leaks at bay and the plug clean helps avoid intermittent faults.

Typical symptoms of a failing CKP include hard starting or no-start when hot, rough idle, sudden stalling, flat spots on acceleration, and a Check Engine Light. Common fault codes include P0335–P0339. Before condemning the sensor, it’s smart to inspect wiring, confirm a healthy battery, and verify the cam sensor is behaving, as the signals are interrelated.

Replacement is straightforward for a competent home mechanic: disconnect the battery, unplug the sensor, remove its small retaining bolt, swap the O-ring, lightly oil the new O-ring, seat the new sensor, and tighten to factory spec. Clear codes and road test. No coding or relearn is typically required on this Corolla—the ECU calibrates itself. Use a genuine or high-quality OEM-equivalent sensor to maintain signal accuracy, as cheap units can cause random cut-outs. If the loom is brittle or soaked in oil, consider loom repair at the same time to prevent repeat visits.

• Best practice: diagnose with live data (engine speed during crank) and scope traces if available.
• Avoid pressure-washing near the sensor and connector.
• If issues persist, check crank pulley/reluctor condition and engine earths.

Does a 2014 Corolla have a crank angle sensor?

Yes. Toyota documents for the E170 Corolla list a Crankshaft Position Sensor (often called a crank angle sensor). It feeds the ECM with the NE signal used for ignition and injection timing on 1ZR-FE/2ZR-FE/2ZR-FAE engines.

What are the signs the crank angle sensor is failing on a 2014 Corolla?

Hard starting (especially when hot), occasional no-start, random stalling, rough idle, hesitation, and a Check Engine Light are common. Scan for P0335–P0339. Always rule out wiring damage and oil-soaked connectors before replacing the sensor.

Is replacement a DIY job, and how long does it take?

Usually, yes. With basic tools it’s around 30–60 minutes. Disconnect the battery, unplug the sensor, remove the retaining bolt, fit the new sensor with a fresh O-ring, and tighten to spec. Clear codes and road test. No ECU coding is typically needed.