Parts for your 2006 Toyota Corolla-Camshaft sensor

2006 Toyota Corolla Camshaft Sensor: what it does and how to look after it

Technical references confirm the 2006 Toyota Corolla (E120/E130 series) petrol models are fitted with a camshaft position sensor (CMP). Toyota’s Repair Manual for the engine control system lists DTCs P0340/P0343 for the CMP circuit, the Toyota Electronic Parts Catalogue shows “Sensor, Cam Position” (common part numbers include 90919‑05046 and 90919‑05058), and service data from Haynes and Autodata describe the CMP’s role on 1ZZ‑FE/1NZ‑FE engines. So yes—this Corolla uses a camshaft sensor.

The camshaft sensor tells the engine control module exactly where the intake cam is, so it can sync fuel injection and spark with the crankshaft sensor. On VVT‑i engines like the Corolla’s, it also helps the ECU track cam timing changes for smooth starts, decent fuel economy and clean emissions. When it plays up, the Corolla can be hard to start, idle roughly, feel down on power, or throw a check‑engine light.

On the 2006 Corolla, the CMP sits on the cylinder head at the timing‑chain end (intake side), held by a single small bolt and sealed with an O‑ring. It’s not a routine replacement item—most last for years. The best “maintenance” is simply regular oil and filter changes at sensible intervals (around 10,000 km or as specified), correct oil grade, and keeping connectors clean and dry. Poor oil quality can affect VVT operation and make diagnosis look like a sensor fault.

Thinking of replacing it? Use a quality sensor (genuine or a reputable brand) and a fresh O‑ring. Basic steps are straightforward: disconnect the battery, remove the engine cover, unplug the sensor, undo the bolt, and gently twist the sensor out. Lightly oil the new O‑ring, seat the sensor, and snug the bolt to factory spec (about 8–10 N·m). Reconnect, clear codes, and confirm with a scan tool that the cam signal is present. Allow the ECU to relearn idle with a short drive.

Before swapping parts, it’s smart to check the basics:

• Scan for codes (P0340/P0341/P0343 are common CMP‑related).
• Inspect wiring and the connector for oil ingress or damage.
• Confirm engine oil level/condition and VVT solenoid operation.
• Consider timing chain wear if there’s rattle or cam/crank correlation faults.

Most workshops will sort a CMP job in well under an hour. If the light’s on and symptoms line up, don’t leave it too long—reliable cam timing is key to hassle‑free motoring across Aussie and Kiwi roads.

Popular questions

Does a 2006 Corolla have a camshaft sensor, and where is it?
Yes. It’s mounted on the cylinder head at the timing‑chain end on the intake side, secured by one bolt with a small O‑ring seal. Access is usually just a matter of removing the engine cover.

What fault codes point to a camshaft sensor issue on a 2006 Corolla?
Common ones are P0340 (Camshaft Position Sensor Circuit), P0341 (Range/Performance) and P0343 (High Input). Always check wiring and oil condition, as VVT issues or harness faults can trigger the same codes.

Is it safe to drive with a dodgy camshaft sensor?
It may start and run, but you can get hard starts, misfires, poor fuel economy, or stalling. Best to diagnose and repair promptly so it doesn’t leave you stranded or cause extra wear.