Parts for your 2019 Honda Odyssey-Camshaft sensor

2019 Honda Odyssey camshaft sensor: what it does and when to replace it

The 2019 Honda Odyssey does use camshaft position sensors. This is confirmed by Honda’s factory Service Manual for 2018–2020 Odyssey (Engine Controls – Camshaft Position (CMP) Sensor procedures) and Honda’s electronic parts catalog, which list camshaft sensors fitted to the 3.5‑litre J35Y6 V6 on each cylinder bank. The OBD‑II framework (SAE J1979) also defines CMP‑related fault codes (like P0340/P0341) that apply to this model.

On this petrol V6, the camshaft sensor keeps the engine control module in sync with the exact position of the camshaft(s). That timing info is critical for fuel injection, spark timing, and i‑VTEC operation. Paired with the crankshaft sensor, it lets the Odyssey fire up cleanly, run smoothly, and keep emissions in check, whether it’s the school run or a long haul down the motorway.

The camshaft sensor isn’t a scheduled service item, it’s designed to last the life of the vehicle. That said, heat, vibration, oil contamination, or wiring issues can cause trouble over time. Common signs it needs attention include:

• Hard starting, rough idle, or hesitation under load
• Check engine light with codes such as P0340/P0341 (Bank 1/Bank 2 CMP)
• Poor fuel economy or the engine dropping into a reduced‑power “limp” mode

When servicing, a good mechanic will first scan for codes, check live data for stable cam/crank correlation, and inspect the sensor connectors and loom under the bonnet for rub‑through or corrosion. Because the Odyssey’s V6 is transverse, one sensor sits at the front bank and the other at the rear (firewall side), so access differs. Any oil leaks at the rocker cover should be sorted, as oil ingress can upset the sensor.

If replacement is needed, use quality OEM‑equivalent parts and a new O‑ring. Fitment is typically straightforward: disconnect the battery, remove the engine cover, unplug the connector, pull the retaining bolt, swap the sensor, lightly oil the O‑ring, and reinstall to the service‑manual torque. No special programming is usually required, the ECU relearns on the fly. Afterward, clear codes and road‑test to confirm stable operation and no pending faults.

Driving long‑term with a failing camshaft sensor isn’t wise. Apart from random stalling and poor drivability, mis‑timed combustion can stress the catalytic converters. If those tell‑tale symptoms or codes pop up, it’s best to book it in and get it sorted before the school drop‑off queue turns into a tow‑truck moment.

Popular questions about the 2019 Honda Odyssey camshaft sensor

How many camshaft sensors does a 2019 Odyssey have?
The J35Y6 V6 uses two camshaft position sensors—one on each cylinder bank. Diagnostic reports may refer to Bank 1 and Bank 2, often calling them Sensor “A” for the intake side. A fault on Bank 1 won’t necessarily mean Bank 2 is bad, so scan data helps pinpoint which side needs attention.

Is the camshaft sensor a regular service item?
No. It’s not on the scheduled maintenance list and is generally replaced only if it fails or shows unstable readings. During routine servicing, a quick visual check of the wiring and connectors, plus scanning for stored or pending codes, is usually sufficient.

Can you keep driving with P0340 or P0341?
It might still run, but it can stumble, stall, or drop into limp mode. Prolonged driving with mis‑timed combustion can increase emissions and risk damage to the catalytic converters. Best bet: get it diagnosed and repaired promptly to avoid a bigger bill later.