P0335 Crankshaft Position Sensor: Diagnosis Steps and Replacement Cost Estimate

Seeing a P0335 code pop up on your dashboard is frustrating, especially when you start wondering what the repair will cost you. The crankshaft position sensor is a small part, but it does a big job it tells your engine's computer where the crankshaft is at any given moment. When it fails, your engine can stall, misfire, or refuse to start entirely. Knowing the real replacement cost ahead of time helps you budget, avoid overpaying at a shop, and decide whether this is a job you can handle yourself.

What Does a P0335 Code Mean?

A P0335 diagnostic trouble code means your vehicle's engine control module (ECM) has detected a problem with the crankshaft position sensor "A" circuit. This doesn't always mean the sensor itself is bad. It could be a wiring issue, a damaged reluctor ring, or a connector problem. Before spending money on a replacement, it's worth understanding the common causes of a P0335 code across different vehicle makes, since the root cause varies depending on your car.

The crankshaft position sensor monitors the speed and position of the crankshaft and sends that data to the ECM. The ECM uses this information to control fuel injection timing and ignition timing. Without an accurate signal, the engine simply cannot run properly.

How Much Does It Cost to Replace a Crankshaft Position Sensor?

The total cost to replace a crankshaft position sensor typically ranges from $75 to $350, depending on your vehicle and where you get the work done. Here's how that breaks down:

Sensor part cost: $15 to $120. Aftermarket sensors for common vehicles like Honda Civics or Ford F-150s usually fall on the lower end. OEM sensors for BMW, Mercedes, or other European brands can run higher.
Labor cost: $50 to $200. Most shops charge one to two hours of labor for this job. The variation depends on how hard the sensor is to reach on your specific engine.
Diagnostic fee: $50 to $100 if the shop hasn't already confirmed the issue. Some shops apply this toward the repair cost.

For popular vehicles, here are some real-world ballpark estimates:

Honda Civic / Accord: $80 to $180 total
Ford F-150 / Explorer: $100 to $250 total
Toyota Camry / Corolla: $90 to $200 total
Chevrolet Silverado / Malibu: $100 to $250 total
BMW 3 Series / 5 Series: $150 to $350 total
Dodge Ram / Charger: $100 to $250 total

These are estimates based on national averages. Your actual cost may be higher or lower depending on your location, the shop you choose, and the severity of any related damage.

What Factors Affect the Replacement Cost?

Several things influence what you'll actually pay:

Vehicle make and model. European and luxury vehicles almost always cost more due to pricier parts and more complex engine layouts. A sensor for a Volkswagen Jetta can cost three times more than one for a Nissan Altima.
Sensor location on the engine. Some sensors sit right on top of the engine and take 20 minutes to swap. Others are tucked behind the starter motor, under the intake manifold, or near the transmission bell housing, which adds significant labor time.
OEM vs. aftermarket parts. An OEM sensor from the dealer might cost $80 while a quality aftermarket equivalent runs $25. In most cases, a reputable aftermarket brand like Denso, Standard Motor Products, or Delphi works fine.
Your location. Labor rates vary a lot. A shop in rural Alabama might charge $80/hour while one in Los Angeles charges $150/hour or more.
Related damage. If the wiring harness is corroded or the reluctor ring is damaged, the repair becomes more involved and expensive.

Can You Replace It Yourself and Save Money?

Yes, in many cases you can. If your vehicle's crankshaft position sensor is reasonably accessible, this is a job that a moderately experienced DIYer can complete in under an hour with basic hand tools. The sensor usually attaches with one or two bolts and has a simple electrical connector.

Doing it yourself means you're only paying for the part anywhere from $15 to $120. That's a significant savings over paying a shop $200 or more.

However, not every vehicle makes this easy. On some engines, the sensor sits behind the starter or below the intake manifold, and you might need to remove other components just to reach it. Before committing to the job, look up the specific location for your vehicle and decide if it's within your comfort level.

If you want to verify the sensor is actually the problem before replacing it, a multimeter or oscilloscope test can confirm whether the sensor is sending a proper signal. There's a detailed walkthrough on diagnosing a P035 code with a multimeter and oscilloscope that covers the exact steps.

What Are Common Mistakes People Make With This Repair?

Replacing the sensor without confirming it's the actual problem is the biggest mistake. A P0335 code points to the crankshaft position sensor circuit not necessarily the sensor itself. You could replace the sensor and still have the same code if the real issue is a chafed wire, corroded connector, or a failing tone ring. Always test before you replace.

Other common mistakes include:

Using the cheapest part available. A no-name sensor from an online marketplace might fail within months. Stick with brands that have a track record Denso, Standard Motor Products, Spectra Premium, or OEM.
Not clearing the code after the repair. After installing the new sensor, clear the DCT with an OBD-II scanner. The code won't go away on its own immediately, and you need to verify it doesn't come back after a test drive.
Forgetting to check the wiring and connector. The connector can corrode, especially on older vehicles or those driven in wet climates. Inspect the pins for corrosion, green buildup, or bent pins before bolting everything back together.
Not torquing the sensor properly. The crankshaft position sensor is air-gapped, meaning it needs to sit at a precise distance from the reluctor ring. Over-tightening or under-tightening the mounting bolt can cause reading errors. Follow the manufacturer's torque spec, which is usually in the range of 7-12 ft-lbs.

What Happens If You Keep Driving With a P0335 Code?

Ignoring a P0335 code is risky. Depending on how the sensor fails, you could experience:

Engine stalling at random times including at highway speeds or in intersections
No-start condition the engine cranks but won't fire because the ECM doesn't know the crankshaft position
Reduced engine power or limp mode many vehicles limit performance to protect the engine
Damage to the catalytic converter if misfires continue, unburnt fuel can overheat and destroy the catalytic converter, turning a $150 repair into a $1,000+ one

A failing crankshaft position sensor won't fix itself. The longer you wait, the more likely you are to get stranded or cause additional damage.

Is the Crankshaft Position Sensor the Same as the Camshaft Position Sensor?

No, they're different sensors that measure different things. The crankshaft position sensor (CKP) monitors the crankshaft's position and speed, while the camshaft position sensor (CMP) monitors the camshaft. They work together, and some symptoms overlap, but they are separate parts with separate diagnostic trouble codes. A P0335 code specifically refers to the crankshaft sensor the camshaft sensor would trigger a different code, like P0340 or P0345.

Should You Replace Both Sensors at the Same Time?

It's not required, but some mechanics recommend it on high-mileage vehicles as preventive maintenance. If your car has 150,000+ miles and one sensor just failed, the other isn't far behind. Since the camshaft sensor is usually inexpensive ($15 to $50) and easy to access on most vehicles, replacing both at the same time costs very little extra and can save you a second trip to the shop.

Quick Checklist Before You Book the Repair

Confirm the diagnosis. Don't replace the sensor based solely on the code. Test the sensor with a multimeter first, or have a trusted shop verify the failure.
Inspect the wiring and connector. Look for damaged wires, corroded pins, or loose connections before spending money on a new sensor.
Get multiple quotes. Call at least two or three local shops and ask for an itemized estimate that separates parts and labor.
Decide on parts quality. If you're going DIY, buy a sensor from a known brand. If a shop is doing it, ask what brand they'll use and whether they offer a warranty on the part and labor.
Clear the code and test drive. After the repair, erase the code with an OBD-II scanner and drive the vehicle for at least 20-30 minutes through different driving conditions. Monitor the readiness monitors to make sure the code stays gone.
Check if you need a relearn procedure. Some vehicles require a crankshaft position sensor relearn or crankshaft variation relearn after replacement. Your owner's manual or a vehicle-specific repair database will tell you if this applies to your car. Skipping this step can cause rough idle or poor performance even with a brand-new sensor.

Bottom line: Budget $75 to $350 for a shop repair, or $15 to $120 if you do it yourself. But before you spend anything, make sure the sensor is actually the problem. A few minutes of testing can save you from replacing a part that didn't need replacing. If you're unsure about the diagnosis, start with the complete P0335 code diagnosis steps to narrow down the real cause.