Parts for your 2021 Toyota Rav4-Camshaft sensor

2021 Toyota RAV4 camshaft sensor — purpose, service advice, and common questions

Technical sources confirm the 2021 Toyota RAV4 does use camshaft position sensors. Toyota’s service information (TIS Repair Manual and Electrical Wiring Diagram for XA50 RAV4 with A25A-FKS/FXS engines) details two camshaft position sensors feeding the engine control module for variable valve timing and sequential injection. Diagnostic sections list DTCs such as P0340/P0341 (Camshaft Position Sensor “A”) and P0345/P0346 (“B”), and Toyota Genuine Parts catalogues include a camshaft position sensor for this model year and engines. So, the camshaft sensor is absolutely relevant and fitted on the 2021 RAV4.

The camshaft sensor on a 2021 Toyota RAV4 is a small but critical bit of kit. It tells the engine computer exactly where the intake and exhaust cams are, so the car can fire injectors at the right moment, manage spark precisely, and dial in Toyota’s VVT-iE timing for strong, efficient performance. On the A25A series engines used in both petrol and hybrid RAV4s, there are two sensors—one tracking the intake cam and one tracking the exhaust cam—so the ECU always knows the valve timing position.

When a cam sensor goes out of spec, the engine’s behaviour can turn a bit ordinary. Expect hard starting, rough idle, flat spots, or a noticeable drop in fuel economy. The check engine light will usually pop on with codes like P0340, P0341, P0345 or P0346. Because the sensor reads a magnetic target and lives near hot, oily parts, it can be affected by internal failure, connector corrosion, or oil intrusion past its O-ring.

Good news: the camshaft sensor isn’t a scheduled replacement item. During regular servicing, a quick visual check of the harness, connector, and any signs of oil wicking is smart. Keeping engine oil fresh and the correct grade helps the VVT system and reduces contamination around the sensor. If diagnosis confirms a faulty sensor, replacement is straightforward: disconnect the plug, remove the retaining bolt, pull the sensor straight out, lightly oil the new O-ring, and refit to the same orientation. It pays to clear fault codes and perform a road test so the ECU relearns cam/crank correlation.

Handy pointers:

• No need to replace pre-emptively—only when symptoms or DTCs point to it.
• Use genuine-quality parts, poor copies can cause intermittent faults.
• On the inline-four RAV4, expect an intake and an exhaust cam sensor—don’t mix the connectors.

Whether it’s the hybrid or non-hybrid, a healthy camshaft sensor helps the RAV4 start cleanly, pull smoothly, and sip fuel the way it should across Aussie and Kiwi roads.

Popular questions

Does a 2021 Toyota RAV4 have a camshaft position sensor?
Yes. The 2021 RAV4 has two camshaft position sensors (intake and exhaust) used by the ECU for sequential fuel injection and VVT control. Toyota’s repair manual and EWD list these sensors and related DTCs (P0340/P0341/P0345/P0346), confirming they’re standard on this model.

Where is the camshaft sensor on a 2021 RAV4?
Both sensors are mounted on the cylinder head: one at the intake side and one at the exhaust side, near the ends of the camshafts. They’re accessible from the top/front of the engine bay, each held with a single bolt and sealed with an O-ring.

When should the camshaft sensor be replaced on a 2021 RAV4?
It isn’t a routine service item. Replace it when there are symptoms (hard starting, rough idle, poor economy) and confirmed fault codes or test results. A competent tech will verify wiring, connector condition, and oil contamination before swapping the sensor to avoid unnecessary parts replacement.