Parts for your 2004 Toyota Rav4-Crank angle sensor

2004 Toyota RAV4 crank-angle-sensor: is it used and what to know

Yes, the 2004 Toyota RAV4 uses a crank-angle-sensor—Toyota refers to it as the crankshaft position (CKP) sensor. This is documented in Toyota’s Repair Manual for the 2004 RAV4 (Engine Control System sections describing the CKP sensor and DTCs P0335–P0339), the Toyota Electrical Wiring Diagram (EWD) for the same model year showing the CKP (NE) signal to the ECM, and common service references such as Autodata/Haynes that list testing and fault codes for the CKP on both the 2.0L 1AZ‑FE and 2.4L 2AZ‑FE petrol engines. These technical sources confirm the sensor is fitted and essential for engine management.

On a 2004 RAV4, the crank-angle-sensor is the ECM’s timekeeper. It reads a toothed wheel on the crankshaft and tells the computer exactly where the pistons are, so it can fire the plugs and inject fuel with spot-on timing. Without a clean CKP signal, the RAV4 can be hard to start, run rough, stall at lights, or not start at all. It also sets OBD-II codes like P0335 when the signal goes missing or erratic.

It’s not a regular “service item” like oil or filters, but it’s smart to give it some love during major servicing. Under the bonnet, the CKP lives low at the front of the engine near the crank pulley on the 2AZ‑FE, and similarly positioned on the 1AZ‑FE. During service, a tech will:

• Check the connector and wiring for broken clips, corrosion, or oil wicking.
• Look for oil leaks from the front crank seal that can foul the sensor tip.
• Scan for stored or pending codes, especially P0335–P0339.

Replacement is straightforward for a trained mechanic: safely raise the front, remove the right-hand splash guard for access, disconnect the plug, undo the small retaining bolt, and swap the sensor. The new sensor’s O-ring should be lightly oiled, and the retaining bolt tightened to the factory spec listed in the Toyota manual. No special relearn is usually required on these Toyotas, but clearing codes and a short road test helps the ECU settle. Using a genuine or quality aftermarket sensor tends to prevent repeat visits.

Common signs it’s time to replace the crank-angle-sensor include intermittent no-start when hot, sudden stalling, a long crank before firing, misfire-like behaviour with no coil or injector faults, and fuel economy dropping off. If any of that pops up—especially with a P0335—testing the CKP circuit should be high on the list.

For Australia and New Zealand owners, it’s worth confirming which engine is fitted (1AZ‑FE 2.0L or 2AZ‑FE 2.4L), as the sensor’s part number and access space can differ slightly, but the job and symptoms are broadly the same.

• Where is the crank-angle-sensor on a 2004 RAV4?
  It’s mounted low on the front of the engine, reading a reluctor on the crank. On the 2AZ‑FE 2.4L, access is usually via the right-hand wheel arch after removing the splash guard. The 1AZ‑FE 2.0L is similar. Look for a small two- or three-wire sensor held in by a single bolt.
• What are the signs the sensor is failing?
  Hard starting (especially hot), sudden stalling, rough idle, poor fuel economy, or a no-start with a P0335 code are common. The check engine light may flick on and off as the signal drops in and out.
• Can the RAV4 be driven with a bad crank-angle-sensor?
  It’s risky. The engine may stall without warning, and it can turn into a no-start at the worst time. It’s best to diagnose promptly and replace the sensor if testing points to it.