P0335 Code | The Guide to Diagnosis and Fast Fixes

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Vehicle engine and/or automatic transmission

Code: P0335 - The crankshaft position sensor (CKP), which monitors engine rotation, has a wiring or electrical problem.

When you see a P0335 code pop up, what it's really telling you is that your car's computer isn't getting a signal from the crankshaft position sensor. In my years under the hood, I've learned just how vital this sensor is. It keeps the engine control module (that's the PCM or ECM, depending on what you drive) clued in on the crankshaft's exact position and speed. Without this info, your engine can't handle fuel injection or set ignition timing-so, in most vehicles, it simply won't start. Occasionally, I’ve seen engines keep running if the sensor fails mid-drive, but good luck getting it started again after you shut it off. The crankshaft sensor also feeds data to things like variable valve timing and sometimes the tach. So, when you get this code, it’s a loud warning: the brains of your engine aren’t getting the info they need to keep things running right.

Causes of P0335 code

From experience, the crankshaft position sensor itself is usually the main troublemaker when a P0335 code shows up. That said, don’t overlook the wiring. I can’t count how many times I've traced the issue back to a broken wire, corrosion, or a connector that's worked itself loose over the years. Sometimes, the reluctor ring-the toothed wheel the sensor reads-gets damaged or loses a tooth or two. And while it’s rare, I have seen the PCM act up, especially if it needs a software update or has internal faults. Here’s what I run into most often in the shop:

Defective crankshaft position sensor
Broken, damaged, or misaligned reluctor ring
Wiring issues-damaged wires, loose connectors, or corrosion
PCM problems (rare, but possible)

Symptoms of dtc P0335

When dtc P0335 is hanging around, you’ll usually spot some glaring symptoms. First off, that check engine light is almost a guarantee. Often, you’ll get cranking with no start at all-classic sign. If it does fire up, you might find it stalling out of nowhere, running rough, or even misfiring. Hard starts become the norm, and sometimes the engine will hesitate or stumble when you hit the gas. Basically, if your car starts acting sketchy or unpredictable, this code could be the root cause. I’ve seen this on a ton of makes-Honda, Ford, Renault, Nissan, and Toyota, to name a few.

Diagnosis steps for P0335

Let me walk you through how I tackle a P0335 code. Always start simple: double-check your battery voltage, and make sure those terminals are clean and tight. Next up, inspect the wiring and connectors at the crankshaft position sensor. Look for any broken wires, corrosion, or loose fittings. Here’s a pro-tip from the garage: have someone crank the engine while you gently wiggle the harness-sometimes the code will flicker on and off, which points straight to a wiring issue. If the wiring checks out, move to the sensor. Use a multimeter (follow the specs in your service manual) or a scan tool to see if it’s sending a signal when cranking. A bad sensor is usually radio silent. If that passes, check the reluctor ring. Sometimes it’s tucked behind a cover, but you want to make sure it isn’t cracked or missing teeth. Only after all this do I start suspecting the PCM, and honestly, that’s rare. Don’t forget to clear the code after each test and see if it returns. Take it step by step-don’t skip the basics. On certain models, you might even find related codes like nissan dtc p0335 or toyota dtc p0335 pop up during this process.

Common Mistakes when fixing obd2 code P0335

A classic mistake I see is folks rushing to swap out the crankshaft sensor without checking the wiring or the reluctor ring. That shortcut can cost you more in the long run. Another thing? People overlook corrosion or bent pins at the connectors-tiny details that can make a big difference. I’ve also seen plenty of DIYers forget to disconnect the battery before digging in, which can lead to blown fuses or accidental shorts. And here’s another pitfall: skipping a scan for related codes, like those for the camshaft sensor, which can send you on a wild goose chase. Take it from me-slow down and double-check everything. Especially with dtc p0335 nissan, wiring issues are often to blame and easy to miss.

Seriousness of P0335 trouble code

Don’t kid yourself-this code isn’t something you can ignore. With a failing crankshaft sensor, your car might not start, or worse, it could stall in traffic. That’s a safety risk for you and everyone else. Plus, when the timing goes haywire, you risk misfires that can toast your catalytic converter or even chew up your engine internals. I’ve seen batteries drained and starters fried by folks cranking over and over, hoping for a miracle. Bottom line? Don’t wait. Get it sorted before you end up stuck on the side of the road or dealing with much bigger repairs.

Repair solutions for obd code P0335

When it comes to fixing P0335, replacing the crankshaft position sensor is usually the way to go-if it checks out as faulty. Always use a quality part, and don’t forget that some sensors need to be installed with a precise air gap. If the issue is wiring, repair or replace the bad section. A reluctor ring that’s damaged or missing a tooth? That needs to go as well. PCM replacement or reprogramming is a last resort, only after you’ve ruled out everything else. Once you’ve made your repairs, clear the code and take the car for a spin to make sure it’s truly fixed. If you’re working on a Nissan or Toyota, pay close attention to nissan obd ii p0335 or toyota dtc p0335 during your diagnostic checks-it can save you a lot of time.

Conclusion

Bottom line: when you see a P0335, your engine’s computer isn’t getting the crankshaft info it needs, and that’s non-negotiable for a smooth start and drive. This is one of those high-priority problems-don’t let it sit, or you’re asking for trouble. Start with the basics: check your wiring and the sensor first, then move on to the reluctor ring and PCM only if you have to. In my experience, most of the time, it’s a bad sensor or some overlooked wiring. Handle it now, and you’ll save yourself a world of frustration later.

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