Parts for your 2002 Honda Fit-Camshaft sensor

2002 Honda Fit camshaft sensor — what it does and how to look after it

Technical documentation confirms the 2002 Honda Fit (GD-series, L13A 1.3 i-DSI and, where fitted, L15A 1.5 VTEC) uses a camshaft position (CMP) sensor. The Honda Jazz/Fit 2001–2008 Service Manual details a CMP sensor in the PGM-FI system and defines DTCs P0340/P0341 for CMP faults, and the Honda Electronic Parts Catalogue lists a CMP sensor for GD1/GD3 variants (e.g., Honda P/N 37510-PWA-901 and supersessions). So, yes — the camshaft sensor is relevant and fitted on the 2002 Fit.

The camshaft sensor’s job is to tell the ECU exactly where the cam is relative to the crank. That lets the ECU fire the twin plugs (on the i-DSI) or manage VTEC phasing (on L15A) at the right moment and run true sequential fuel injection. When the CMP signal goes missing or flaky, the car can be hard to start, run rough, and may log a Check Engine Light with P0340/P0341. In some cases it’ll crank but not catch because the ECU can’t confirm which stroke each cylinder is on.

On the GD Fit, the sensor sits on the cylinder head at the timing-chain end, secured with a single 10 mm bolt and sealed by an O-ring. It’s a straightforward swap for most workshops: isolate the battery, unplug the connector, remove the bolt, twist and lift the sensor out (a dribble of oil is normal), lube the new O-ring with clean engine oil, seat it squarely, and tighten to the service-manual torque before clearing codes and road-testing. Using a quality OEM or well-reviewed aftermarket sensor avoids nuisance faults.

• Common signs it’s on the way out: extended cranking, misfires at idle, sudden stalling, poor fuel economy, and MIL with P0340/P0341.
• Servicing tips: during routine services, check the harness for rubbing near the cam cover, ensure the connector seal is clean and dry, and keep oil changes on time — sludgy oil can encourage varnish build-up around the pickup area.

There’s no scheduled replacement interval for the CMP sensor, but it’s smart to inspect it whenever work is done around the timing cover or rocker gear. If the O-ring weeps, replace it to prevent oil tracking into the connector. After timing-chain or cam work, confirm the engine syncs cleanly with a scan tool — a healthy CMP waveform helps keep the Fit starting sweetly and running efficiently for many more kilometres.

Technical references: Honda Jazz/Fit 2001–2008 Service Manual (PGM-FI: Camshaft Position (CMP) Sensor, DTC P0340/P0341), and Honda Electronic Parts Catalogue for GD1/GD3 (CMP sensor listed for L13A/L15A engines, e.g., 37510-PWA-901, superseded as applicable).

Popular questions about the 2002 Honda Fit camshaft sensor

Where is the camshaft sensor on a 2002 Honda Fit?
It’s on the cylinder head at the timing-chain end, near the cam gear, held by a single small bolt. Access is from the top under the bonnet, removing engine covers and moving a hose or two usually provides enough room.

Look for a small, two- or three-pin connector going into a compact sensor body with an O-ring seal. A torch helps spot it without pulling extra parts off.

Can a 2002 Honda Fit run without a working camshaft sensor?
Typically no. With a failed CMP signal the ECU can’t confirm cylinder phase, so it may crank with no start, or start and run poorly with a Check Engine Light. It’s not something to ignore — fix it before it leaves someone stranded.

Even if it does start intermittently, fuel economy and drivability will suffer, and there’s a risk of stalling at idle or low speed.

Are the i-DSI 1.3 and 1.5 VTEC sensors the same?
Both engines use a camshaft sensor, but part numbers can differ by engine and build date. The Honda EPC shows distinct listings and supersessions. Matching the VIN or engine code when ordering avoids fitment headaches.

When in doubt, a reputable supplier can cross-check the exact sensor and O-ring required for the specific GD variant.