Parts for your 2012 Toyota Camry-Camshaft sensor

2012 Toyota Camry camshaft sensor: what it does, why it matters, and when to replace it

Yes, the 2012 Toyota Camry uses camshaft position sensors. Toyota’s factory service information (TIS) and Repair Manual for the XV50 series list camshaft position sensors across all engines offered that year—2.5L 2AR-FE, 3.5L 2GR-FE, and the 2.5L 2AR-FXE hybrid. The manuals include diagnostics for DTCs such as P0340/P0345 (Camshaft Position Sensor “A”, Banks 1/2) and P0365/P0390 (Camshaft Position Sensor “B”, Banks 1/2), plus component locations and test procedures. The 2012 Camry Electrical Wiring Diagram also shows the CMP sensor circuits, and the Toyota EPC parts catalogue lists dedicated camshaft sensors for these engines. In short, it’s a relevant and critical part on this model.

The camshaft sensor tells the engine control module exactly where the cam(s) are, so it can sync fuel injection and ignition, and command Dual VVT-i accurately. On the 4‑cylinder, there are sensors for the intake and exhaust cams, on the V6, there are sensors for each bank. If the signal goes missing or messy, the Camry can be hard to start, run rough, drop power, or throw the check-engine light.

It isn’t a scheduled service item, but it’s worth a check during servicing of your 2012-Toyota-Camry camshaft-sensor. Under the bonnet, look for oil intrusion at the sensor body, brittle wiring, or loose connectors near the timing cover. A quick scan for fault codes and live data (cam/crank sync and VVT angles) helps catch issues early. Using the correct low-viscosity engine oil and timely oil changes keeps VVT gear movement clean, which prevents false CMP-related faults.

Replacement is straightforward with basic tools: disconnect the plug, remove the retaining bolt, gently twist the old sensor free, lightly oil the O-ring on the new unit, and refit. Always clear codes and road-test while watching live data. If faults persist, check the crank sensor and timing chain stretch/correlation before throwing more parts at it.

• Common symptoms: long crank/no start, rough idle, flat spots, poor fuel economy, and DTCs P0340/P0345/P0365/P0390.
• Good practice: use quality or genuine sensors, mind wiring routing, and avoid overtightening the retaining bolt.
• When in doubt: a scope trace of CMP vs CKP signals is the gold standard for diagnosis.

Where is the camshaft sensor on a 2012 Toyota Camry?
On the 2.5L four-cylinder, the sensors sit on the end of the cylinder head at the timing-chain side—one for intake and one for exhaust. On the 3.5L V6, they’re located on each bank near the cam ends. They’re accessible from the top under the bonnet with basic hand tools.

What are the signs my Camry’s camshaft sensor is failing?
Expect hard starting, stumbling idle, lack of power, increased fuel use, and a check-engine light with codes like P0340 or P0365. If symptoms are intermittent, heat or vibration may be affecting the sensor or its wiring.

Is it safe to keep driving with a faulty camshaft sensor?
It might still run, but performance and fuel economy will suffer, and it could stall when hot. Prolonged driving risks catalyst damage from misfires. Best to diagnose and sort it promptly.