Camshaft Position Sensor Buying Guide — Cheap OEM Replacement Parts for Sale | REVXSC
Looking for cheap camshaft position sensors that won't fail in 6 months? Whether you're chasing symptoms of a bad camshaft position sensor, camshaft position sensor replacement cost, ford expedition camshaft position sensor location, p0340 camshaft position sensor circuit, how to test a camshaft position sensor with a multimeter, this guide covers what to buy, what to skip, and how to make sure the part you order actually fits your truck or car. Every camshaft position sensor sold at REVXSC ships with a verified year/make/model/engine fitment table — no guessing.
What camshaft position sensors actually do
In one sentence: the magnetic or Hall-effect sensor that tells the ECU exactly where each camshaft lobe is so injection and ignition timing stay in sync. When they wear out, you'll typically feel it before you see it — your car starts telling you something is wrong, and ignoring it gets expensive.
Signs you need new camshaft position sensors
- check engine light with codes P0340/P0344/P0345
- rough idle or random misfires
- hard starting or extended crank time
- sudden stalling at low RPM
- loss of power and bad fuel economy
If you tick more than one box, replace before it leaves you on the side of the road. The repair gets a lot cheaper when you catch it early.
Also known as
Depending on the shop manual, region, or supplier you're reading, camshaft position sensors are also called: cam sensor, CMP sensor, cam position sensor, camshaft sync sensor, phase sensor. They all refer to the same component — when you're cross-referencing OEM and aftermarket part numbers, watch for these naming variations so you don't double-order the same item.
How much should you pay?
Online direct-ship from REVXSC undercuts dealer parts counters significantly. We carry quality replacement camshaft position sensors from ASTEMO / HITACHI, Standard Motor Products, Walker Products, Wells, Delphi, Bosch, Denso, ACDelco — every listing shows the price, the fitment chart, and real product photos. No mystery part numbers.
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OEM vs aftermarket: which to choose
For camshaft position sensors, the brand actually matters. ASTEMO / HITACHI and Standard Motor Products supply major automakers as OEM suppliers — when you buy their boxed retail product, you're getting the same engineering and tolerances. Choose between magnetic (variable reluctance) and Hall-effect sensors based on your factory setup, and decide between OE-grade units like Standard Motor Products and budget-tier housings depending on engine bay temperature exposure..
Install: DIY or shop?
Difficulty: intermediate. Bay time runs about 20–60 minutes with the right tools. Lifespan you should expect: 80,000-120,000 miles.
How REVXSC keeps prices low
Every listing includes a year/make/model/engine table.
ACDelco, Bosch, Dorman, Dayco, FEL-PRO and more.
Ships from US warehouses with real tracking.
No knockoff boxes, no rebranded junk.
Camshaft Position Sensor shipping to every US state
REVXSC ships camshaft position sensors same-day from US fulfillment to every state. Whether you're chasing salt-corroded camshaft position sensors in the Midwest, heat-fatigued parts in the Southwest, or just need a fast OEM-grade replacement, every order ships from the US with tracking. We deliver to:
Common questions Americans ask about camshaft position sensors
What happens when a camshaft position sensor goes bad?
A failing CMP sensor confuses the ECU about valve timing, so you get misfires, hard starts, a flashing check engine light, and sometimes a no-start condition. The engine often runs in 'limp home' mode with reduced power and worse fuel economy until the sensor is replaced.
Can I drive with a bad camshaft position sensor?
You can usually limp home, but it's not safe long-term. A failing sensor can cause sudden stalls in traffic, raw fuel washing the cylinder walls, and damage to the catalytic converter from unburned fuel. Replace it within a few days of seeing symptoms.
How much does it cost to replace a camshaft position sensor?
The sensor itself runs $25-$120 from brands like Standard, Walker, Delphi, and Bosch. Independent shop labor is $80-$200 since most are bolt-in, putting the total job at $100-$320. Dealer prices typically run 2-3x that for the same OE-equivalent part.
Will a bad camshaft sensor throw a code?
Yes, almost always. The most common codes are P0340 (CMP circuit malfunction), P0341 (range/performance), P0344 (intermittent), and bank-specific P0345/P0365. A scan tool will pin down which bank has failed on V6 and V8 engines.
How long does a camshaft position sensor last?
Most factory CMP sensors last 80,000-120,000 miles before heat soak or oil contamination kills the internal coil. Engines that leak oil into the sensor area, or ones run hot on cheap synthetic blends, tend to fail earlier than average.
Where is the camshaft position sensor located?
On most Ford modular V8s the CMP sensor sits on the timing cover near the front of the engine; on overhead-cam engines it bolts into the cylinder head near the cam gear. A factory service manual or your VIN-matched diagram is the fastest way to find yours.
Can a bad camshaft sensor cause a no-start?
Yes. If the ECU loses cam signal entirely on some engines, fuel and spark won't fire at the right time and the engine will crank but not start. Other models will start using crank-only timing in 'limp' mode, but performance will be terrible.
Do I need to reset the ECU after replacing a camshaft position sensor?
On most Fords you don't strictly need to relearn, but clearing the trouble codes with an OBD2 scanner and disconnecting the battery for 10 minutes helps the ECU re-adapt fuel trims. Some models require a TSB-specified relearn procedure with a Ford IDS or equivalent.
Top US searches for camshaft position sensors
Most-searched phrases from American shoppers comparing camshaft position sensors this year — all of these are served by what REVXSC stocks:
This guide is updated as our camshaft position sensor inventory and fitment data change. Last reviewed 2026-06-28.