P0335 or Crankshaft Position “A” Circuit Malfunction

October 2, 2024

SAVE ON CRANKSHAFT POSITION SENSORS & OTHER SENSORS

The P0335 code refers to a malfunction in the crankshaft position sensor circuit, specifically for sensor "A." This sensor plays a critical role in your engine's operation by monitoring the position and rotational speed of the crankshaft, which is necessary for proper timing of fuel injection and ignition. When the sensor fails or there’s an issue with its circuit, it can result in engine performance problems or a no-start condition.

What Does the Crankshaft Position Sensor Do?

The crankshaft position sensor (CKP) monitors the rotational speed (RPM) and position of the crankshaft in real time. It sends this data to the vehicle's engine control module (ECM), which uses it to control ignition timing, fuel injection, and other critical functions. Without this sensor working properly, your engine’s timing will be off, leading to various driveability issues.

Common Symptoms of the P0335 Code

When the P0335 code is triggered, you might notice the following symptoms:

Check Engine Light: As with most trouble codes, the first sign you’ll notice is the illuminated Check Engine Light.
Engine Stalling: If the CKP sensor malfunctions, your engine might stall unexpectedly.
Engine Won’t Start: In some cases, the engine may not start at all, especially if the sensor completely fails.
Rough Idling: Your engine may run roughly or hesitate when you accelerate.
Reduced Power: You may experience a lack of power or poor acceleration as the ECM struggles to manage timing properly.

Causes of the P0335 Code

Several factors can contribute to the P0335 code being triggered:

Faulty Crankshaft Position Sensor: The most common cause is the sensor itself failing, typically due to wear, heat, or contamination.
Damaged Wiring or Connector: Worn, corroded, or disconnected wiring in the CKP circuit can also trigger this code.
Problems with the Reluctor Ring: The reluctor ring, which the CKP sensor monitors, may be damaged or misaligned.
ECM Issues: In rare cases, the engine control module (ECM) could be faulty and unable to process the signal correctly.
Aftermarket Parts: Sometimes, aftermarket parts like performance chips or tuners can interfere with the CKP sensor’s signal.

How to Diagnose the P0335 Code

Diagnosing a P0335 code can be relatively straightforward if you have the right tools and follow these steps:

Scan the Vehicle: Start by using an OBD-II scanner to retrieve the diagnostic trouble code. This will confirm the P0335 code and allow you to check for any other related codes.
Inspect the Sensor and Wiring: Visually inspect the crankshaft position sensor for any obvious damage. Check the wiring and connectors for signs of wear, corrosion, or disconnection.
Test the Sensor: Use a multimeter to test the sensor's resistance. Refer to the vehicle’s service manual for the correct specifications.
Check the Reluctor Ring: Inspect the reluctor ring for damage, cracks, or misalignment. If necessary, rotate the crankshaft to see if the ring is properly aligned.
Test the Circuit: Perform a voltage drop test on the CKP circuit to ensure it’s delivering the right amount of voltage.
ECM Diagnosis: If all components check out and the code remains, consider testing or reprogramming the ECM.

Common Fixes for the P0335 Code

Once the source of the problem has been identified, you’ll need to perform the appropriate repairs. Here are some of the most common fixes for the P0335 code:

Replace the Crankshaft Position Sensor: If the sensor is faulty, it should be replaced with a new one. Make sure you use an OEM-quality replacement part for the best results.
Repair or Replace Wiring: If you find any damage in the CKP circuit, repair or replace the affected wires or connectors.
Fix or Replace the Reluctor Ring: If the reluctor ring is damaged or misaligned, it may need to be adjusted or replaced.
Reprogram or Replace the ECM: In rare cases where the ECM is faulty, you may need to have it reprogrammed or replaced.

Cost of Fixing a P0335 Code

The cost to fix a P0335 code can vary depending on the exact cause of the problem and the make and model of your vehicle. Here’s a breakdown of potential costs:

Crankshaft Position Sensor Replacement: On average, replacing the CKP sensor can cost between $120 and $300, including parts and labor.
Wiring Repair: Repairing damaged wiring typically costs between $50 and $200, depending on the complexity of the job.
ECM Replacement: If the ECM is the issue, it can be one of the more expensive repairs, costing anywhere from $500 to $1,500.

Preventing a P0335 Code

While you can’t always prevent a P0335 code, regular vehicle maintenance can help you avoid issues with the crankshaft position sensor and related components:

Keep Your Engine Clean: Avoid oil leaks and other contaminants that can damage sensors and wiring over time.
Regular Inspections: Include the crankshaft position sensor in your routine inspections to catch any issues early.
Use Quality Parts: When replacing sensors or performing repairs, always use high-quality, OEM parts to ensure compatibility and durability.

FAQs About the P0335 Code

Here are some commonly asked questions about the P0335 code and its impact on your vehicle’s performance:

Can I drive my car with a P0335 code?

It’s not recommended to drive your vehicle for an extended period if you have a P0335 code. Since the crankshaft position sensor is critical for your engine’s timing and overall performance, driving with a malfunctioning sensor could lead to stalling, poor acceleration, and in some cases, your car not starting at all. If the issue is not fixed, it may also cause additional damage to the engine. We recommend addressing this code as soon as possible.

How long does it take to fix a P0335 code?

Replacing a crankshaft position sensor or addressing wiring issues can typically be done in under a couple of hours, depending on the make and model of the vehicle and the complexity of the job. A professional mechanic with the right tools can diagnose and repair this issue relatively quickly.

What happens if I ignore the P0335 code?

Ignoring the P0335 code can lead to more serious issues, including engine misfires, poor fuel economy, and a no-start condition. Your engine might experience significant performance problems, and over time, it could result in expensive repairs. Fixing this issue early will save you time, money, and potential headaches down the road.

Can I replace the crankshaft position sensor myself?

Replacing the crankshaft position sensor is a relatively straightforward job for someone with basic mechanical knowledge and the right tools. The sensor is typically located near the crankshaft, and in most vehicles, you’ll need to access it from underneath the car. Be sure to consult your vehicle’s repair manual for specific instructions. If you're unsure or don't feel comfortable doing the repair yourself, it’s always best to consult with a professional mechanic.

How do I clear the P0335 code after making repairs?

Once the repairs have been completed, the P0335 code can be cleared using an OBD-II scanner. Most auto parts stores or mechanics can clear the code for you, or if you own an OBD-II scanner, you can clear the code yourself. However, it’s essential to ensure the repair was successful before clearing the code, as unresolved issues could cause the code to reappear.

Partshawk: Your Go-To for Auto Parts and Repairs

At Partshawk, we understand the importance of getting your vehicle back on the road as quickly and efficiently as possible. Whether you need a crankshaft position sensor or any other parts, we’ve got you covered with high-quality, OEM and aftermarket components. Our parts selection is not only affordable but also designed to meet the highest performance standards, ensuring that you’re getting the best for your vehicle.

If you’re unsure about which part to purchase or need help selecting the right component, our team at Partshawk is here to help! Feel free to reach out to us, and we’ll provide expert guidance, helping you make the best choice for your vehicle’s needs. With fast shipping and competitive pricing, we’re confident that Partshawk will become your go-to source for all your automotive repair needs.

In Summary

The P0335 code can cause significant disruptions in your vehicle’s performance, and it’s not something to ignore. Diagnosing and repairing the issue is essential to avoid stalling, rough idling, and other driveability problems. Whether it's the sensor itself, wiring, or another related issue, taking care of it promptly will ensure your engine continues to run smoothly.

Remember, when it comes to finding the right parts for your repairs, Partshawk is always here to provide the best-quality parts at competitive prices. From crankshaft position sensors to wiring components and more, we’ve got everything you need to keep your vehicle in peak condition.

Shop with us today and get your car back in shape in no time!