Parts for your 2008 Honda Elysion-Camshaft sensor

2008 Honda Elysion Camshaft Sensor — Purpose, Service and Replacement

Referencing Honda technical sources—the Honda Electronic Service Manual (PGM‑FI/engine controls) for the K24A and J‑series engines used in the Elysion, Honda’s EPC/parts catalogue listings, and the factory OBD‑II diagnostics that include P0340/P0341 for this platform—the 2008 Honda Elysion is fitted with camshaft position sensor(s). The 2.4‑litre K24A typically uses a single CMP sensor on the cylinder head, while the V6 variants (J30A/J35A) use two sensors (one per bank) for accurate phase detection.

On a 2008 Honda Elysion, the camshaft sensor is a small but critical piece of the engine management puzzle. It tracks the camshaft’s position and speed so the ECU can fire injectors and coils at the right time, and manage i‑VTEC/VTC on the four‑cylinder or variable timing on the V6. That precise timing means easier starts, smooth idle, good fuel economy, and tidy emissions.

It’s not a scheduled replacement item, but it is worth a look during regular servicing. A quick visual once‑over for oil contamination around the sensor body, a cracked connector, or chafed wiring can save a headache later. If the Check Engine light pops up with camshaft correlation codes, hard starting, misfires at low revs, or the engine feels flat and thirsty, the sensor or its wiring is a usual suspect.

• Common symptoms: extended cranking, rough idle, sudden loss of power, limp mode, increased fuel use, and DTCs such as P0340/P0341.
• Likely causes: internal sensor failure, oil ingress, heat‑aged wiring, poor earths, or a damaged trigger wheel.

Replacement is straightforward for most home mechanics. Disconnect the battery, unplug the connector, remove the retaining bolt, and ease the sensor out. Lightly oil the O‑ring on the new unit, seat it squarely, and reinstall the fastener to the factory torque spec. Always clear fault codes and perform a short relearn drive so the ECU can validate the signal. On V6 models, confirm which bank has the fault before ordering parts—Bank 1 and Bank 2 sensors aren’t always interchangeable.

Pro tip for Aussie and Kiwi conditions: dust and heat can be tough on connectors. During services, give the plug a quick clean and ensure the harness isn’t pulled tight near the timing cover. If intermittent faults persist, back‑probe the signal and 5‑volt reference with a scope or use known‑good data, it’s a smarter move than throwing parts at the problem.

Does the 2008 Honda Elysion have more than one camshaft sensor?

It depends on the engine. The 2.4‑litre K24A typically runs a single camshaft position sensor on the head. The V6 models (J30A/J35A) use two sensors, one per bank, so the ECU can monitor each cam’s phase independently for accurate timing control.

What are the signs the camshaft sensor is failing on a 2008 Elysion?

Expect longer cranking, a rough or hunting idle, flat spots off the line, and higher fuel use. The Check Engine light usually flags codes like P0340 or P0341. If the wiring or connector is oil‑soaked or brittle, that’s also a clue the sensor circuit needs attention.

Is it safe to keep driving with a dodgy camshaft sensor?

It might still run, but performance and economy can suffer, and it may stall or refuse to restart when hot. That’s not ideal on a school run or a long trip. Best to diagnose promptly and replace the sensor or repair the wiring before it strands the driver.