Parts for your 2009 Honda Odyssey-Camshaft sensor

2009 Honda Odyssey Camshaft Sensor

Based on Honda’s 2009 Odyssey Factory Service Manual (engine controls and DTC sections), Honda Service Information, and OEM parts catalogues for the J‑series V6, this model is fitted with camshaft position sensors: CMP Sensor A on the rear (firewall) bank and CMP Sensor B on the front (radiator) bank. These sources also document related fault codes (e.g., P0341, P0365), confirming the camshaft sensor is integral to this vehicle’s engine management.

The camshaft sensor on a 2009 Honda Odyssey keeps the engine computer in the loop about exactly where each cam is during rotation. That timing reference lets the ECU fire injectors sequentially, control ignition timing, and manage VTEC/VCM operation smoothly. It also helps with crisp cold starts and accurate misfire detection, so the van feels right at home on school runs and long Kiwi or Aussie road trips.

When a cam sensor plays up, the Odyssey can be harder to start, run a bit rough, hesitate on take-off, or burn more fuel than it should. The check engine light might pop on with codes like P0341/P0344 (Bank 1/A) or P0365/P0369 (Bank 2/B). Don’t forget: a stretched or mis-timed timing belt can set similar codes, so it’s wise to consider belt condition and valve timing as part of diagnosis.

There’s no scheduled service for the cam sensors themselves, but a few habits keep them happy:

• Keep up with timing belt, water pump, and tensioner service intervals in kilometres and years.
• Fix oil leaks from rocker cover gaskets so oil doesn’t wick into the sensor plugs.
• Periodically check the wiring looms and connectors under the bonnet for damage or corrosion.

Replacement is pretty straightforward with basic spanners:

1. Work on a cool engine and disconnect the battery.
2. Remove the engine cover, locate CMP A (rear/firewall bank) and CMP B (front/radiator bank).
3. Unplug the connector, remove the single hold-down bolt, and withdraw the sensor.
4. Lightly oil a new O‑ring, fit the new sensor, and tighten the bolt to the workshop manual torque.
5. Clear fault codes and road test to confirm clean data and normal running.

Use quality OEM or reputable aftermarket parts, avoid sealants on the O‑ring, and never yank the harness. Most home mechanics can sort one in under an hour, the rear bank may take a touch longer for access. If the light returns, recheck wiring, valve timing, and live cam/crank correlation data.

Popular questions about the 2009 Honda Odyssey camshaft sensor

Where is the camshaft sensor on a 2009 Honda Odyssey?
This Odyssey uses two. CMP A sits on the rear cylinder head (firewall side) near the top of the timing cover, CMP B sits on the front head (radiator side). Both are accessible from under the bonnet after removing the engine cover.

What symptoms point to a failing camshaft sensor?
Expect longer cranking, rough idle, hesitation, flat spots, and poorer fuel economy, often with a check engine light. Common fault codes include P0341/P0344 (Bank 1/A) and P0365/P0369 (Bank 2/B). Always verify wiring and valve timing before condemning the sensor.

Do both sensors need replacing together?
Not necessarily. Replace the faulty side confirmed by diagnosis. That said, on higher‑kilometre vehicles, owners sometimes choose to replace both while there for peace of mind, especially if access and downtime are similar.

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