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Summary
  • Diagnostic trouble code (DTC) P0346 stands for “Camshaft Position Sensor  ‘A’ Circuit Range/Performance Bank 2.” Code P0346 is set when the powertrain control module (PCM) compares the synch pulses of the crankshaft position (CMP) sensor with the ones stored in its memory and receives irregular or zero signals from the CMP sensor.
  • Common causes of the P0346 include a faulty camshaft position sensor, circuit problems, and a damaged camshaft position sensor reluctor wheel.
  • Common symptoms of the P0346 code include an illuminated check engine light, intermittent bucking or surging, and the engine stalling intermittently.

The camshaft position (CMP) sensor measures the position and speed of the engine’s camshaft. It turns its readings into synch pulses that go to the engine control module (ECM) or powertrain control module (PCM). Armed with that information, the control module adjusts how much fuel the injectors spray into the engine.

The PCM monitors the synch pulses from the CMP sensor. If there is an irregularity in the signal or there is no signal at all, the control module will log a P0346 code.

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What Does the P0346 Code Mean?

The diagnostic trouble code (DTC) P0346 indicates “Camshaft Position Sensor “A” Circuit Range/Performance Bank 2.” Bank 2 refers to the cylinder bank on the opposite side of the No. 1 cylinder in engines with two banks.

camshaft position sensor triggers p0346 code
Depending on the engine’s design, the camshaft position sensor may be located in different locations.

Depending on the engine’s design, the camshaft position sensor may be located in different locations. Possible placements include the distributor housing and camshaft timing gear in older models. For vehicles that use a distributorless ignition system, the CMP sensor may be found in the assembly that replaced the distributor.

The PCM compares the synch pulses of the CMP sensor with the ones stored in its memory. If the computer gets irregular or zero signals from the camshaft position sensor, it will set the powertrain code P0346.

Note: The definition of code P0346 can differ according to the vehicle manufacturer. Check the appropriate repair manual or repair database for the exact code definition.

What are the Common Causes of the P0346 Code?

What are the Common Symptoms of the P0346 Code?

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How to Diagnose the P0346 Code

The P0346 code is a generic powertrain code that various makes and models can log. However, this does not mean that there is a one-size-fits-all solution to identify its underlying problem.

If you’re not confident about conducting diagnostic tests on your vehicle, it’s a good idea to bring it to a professional mechanic. Otherwise, you can go ahead and diagnose the issue yourself. To help you get started, here is a video that can give you an idea of what the process might involve:

How to Fix the P0346 Code

Attempting to fix a P0346 code can become a challenging task if you don’t have the right tools and know-how to test the camshaft position sensor. In most cases, it’s best to leave the job to professionals.

For DIYers with advanced technical knowledge and hands-on experience who prefer to test and replace their vehicle’s camshaft position sensor on their own, it will be helpful to rely on the appropriate repair manual or refer to an online repair database.

Where to Get a New Camshaft Position Sensor to Resolve the P0346 Code

Driving your daily driver becomes a hassle when it has a set code P0346 due to issues like stalling and surging. If a diagnosis reveals a bad camshaft position sensor to be the culprit, don’t worry. At CarParts.com, we have a wide selection of camshaft position sensors sourced from trusted brands in the industry.

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It only takes a few minutes to find and order what you need. Simply fill out our vehicle selector and search filters to check out compatible camshaft position sensors that match your preferred brand, price, and specs.

What’s more, you don’t have to wait a long time for your order to arrive. Thanks to our strategically located warehouses across the country, you can expect your orders to arrive at your doorstep in as fast as two business days. If you have questions, we have a 24/7 customer service team ready to assist you anytime.

Shop for a new camshaft position sensor now to resolve this trouble code in no time!

About The Authors
Written By Automotive and Tech Writers

The CarParts.com Research Team is composed of experienced automotive and tech writers working with (ASE)-certified automobile technicians and automotive journalists to bring up-to-date, helpful information to car owners in the US. Guided by CarParts.com's thorough editorial process, our team strives to produce guides and resources DIYers and casual car owners can trust.

Reviewed By Contact Center Manager and Technical Reviewer at CarParts.com

William “Bill” Guzenski has produced hundreds of how-to videos for the automotive community. He’s an ASE Certified Master Automobile Technician, and is affiliated with the Specialty Equipment Market Association (SEMA). He loves attending race events and car shows throughout the country, as well as traveling in his 40-foot motorhome, exploring abandoned mines and ghost towns.

Any information provided on this Website is for informational purposes only and is not intended to replace consultation with a professional mechanic. The accuracy and timeliness of the information may change from the time of publication.

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