Buyer Guide
Best Camshaft Position Sensors
A failing camshaft position sensor causes hard starting, stalling, and codes like P0340. Replacement is usually straightforward and much cheaper than shop rates.
What to look for
- OEM vs. aftermarket — Denso, Hitachi, and Standard Motor Products are reliable
- Magnetic vs. Hall effect — must match your vehicle's original sensor type
- Connector included — some sensors come with the wiring pigtail to prevent connector damage
- Bank 1 vs. Bank 2 — V6 and V8 engines have separate sensors for each cylinder bank
Our picks
Denso CMP Sensor
OEM supplier for Toyota, Honda, and other imports — exact-fit quality
Standard Motor PC144 CMP Sensor
Reliable aftermarket with wide vehicle coverage
Hitachi CMP138 Sensor
OEM supplier for Nissan, Subaru — proven reliability
As an Amazon Associate, ratchit Automotive Solutions earns from qualifying purchases. Verify fitment before purchase.
Buying tips
- Verify part number match — even within the same engine, sensor locations and connectors vary
- Apply dielectric grease to the connector to prevent moisture intrusion
- If one CMP sensor fails on a V6/V8, inspect the other — they often age similarly
- Clear codes after replacement and verify the engine starts and idles normally
Related guides
Related OBD-II code guides
See the codes this part commonly triggers — and what to inspect before replacing anything.
Recommended tools & parts
These recommendations appear because this issue commonly requires inspection in this system area. ratchit does not recommend replacing parts until the likely cause is confirmed.
Sensor & Diagnostic Kit
Test and replace common engine sensors — O2, MAF, cam/crank
Check sensor behavior before replacing parts Verify fitment for your year/make/model.
Maintenance Essentials Kit
Routine service basics — oil, filters, fluids, and spark plugs
Prepare this vehicle for upcoming maintenance Verify fitment for your year/make/model.
As an Amazon Associate, ratchit Automotive Solutions earns from qualifying purchases.
Shop by Category
Browse our marketplace by category — curated products for every service.
Jump starter, battery tester, and OBD2 scanner
Oil, filters, spark plugs, and fluids
Wiper blades, dash cams, and lighting upgrades
Roadside kit, first aid, and tow strap
Tire gauge, valve stems, inflator, and covers
Phone mounts, organizers, and comfort upgrades
Informational only. Verify fitment before purchase.
Frequently Asked Questions
Not sure what you need?
Run a free scan and get vehicle-specific recommendations based on your mileage, climate, and current codes.