P0342 Code: Camshaft Position Sensor “A” Circuit Low

Reviewed by

Richard McCuistian, ASE Certified Master Automobile Technician

Technical Reviewer at CarParts.com

Written by CarParts.com Research Team - Updated on May 27th, 2024

Reading Time: 4 minutes
Summary
  • The diagnostic trouble code (DTC) P0342 indicates “Camshaft Position Sensor ‘A’ Circuit Low.”
  • Your vehicle’s powertrain control module (PCM) will log code P0342 when it fails to detect a correct signal from the camshaft position sensor “A”.
  • The likely reasons for the P0342 code are a bad camshaft position sensor, a faulty or malfunctioning PCM, and wiring problems.
  • The P0342 code’s symptoms are an illuminated check engine light, excessive stalling, reduced engine performance, and starting issues.

Your powertrain control module (PCM) receives signals from various sensors and switches all over your vehicle. It helps your vehicle perform at its best. However, it can have issues due to component complications or malfunctions. These problems can cause irregularities in the signals being sent to your PCM, which may trigger it to set trouble codes, such as code P0342.

Did a P0342 code show up after using a scan tool on your vehicle? Here are the basic information you need to know about a P0342 code:

What Does the P0342 Code Mean?

P0342 is a diagnostic trouble code (DTC) that stands for “Camshaft Position Sensor ‘A’ Circuit Low.” It basically means that your PCM is not detecting a correct signal from your camshaft position sensor.

Toyota, for example, describes code P0342 as: “The output voltage of the camshaft position sensor is less than 0.3 V for 4 seconds.”

Designation “A” refers to the sensor located in Bank 1, which has your engine’s cylinder #1. Your camshaft position sensors send information to your PCM so it can optimally operate your fuel injectors, spark plugs, and ignition coils. If there are issues causing weak or irregular camshaft position sensor signals, your PCM can trigger a P0342 code to notify you about the complication.

The P0342 code basically means that your PCM is not detecting a correct signal from your camshaft position sensor.

Our extensive technical discussion about the camshaft position sensor can help you more fully understand P0342 and what you need to diagnose and fix the issue.

Note: The definition of code P0342 may be different depending on the vehicle manufacturer. Consult the appropriate repair manual or repair database for the exact code definition.

What are the Common Causes of the P0342 Code?

Different vehicle problems can cause a P0342 code. However, indications may vary according to your vehicle’s year, make, and model. Here are some of this trouble code’s most common causes:

What are the Common Symptoms of the P0342 Code?

A P0342 code can come with different symptoms, depending on its underlying cause. Here are the most common symptoms linked to a P0342 code:

A faulty powertrain control module is one of the common causes of code P0342.

How to Diagnose the P0342 Code

Diagnosing trouble codes can become extremely difficult. Similar to the P0342 code, their indications may change based on your vehicle’s make and model. Mechanics require lots of training and experience to work on resolving trouble codes. It’s best to ask them for help if you want to fix your vehicle as soon as possible. If you want to learn more about the P0342 code, you can check out this video:

How to Fix the P0342 Code

There is no one way to troubleshoot trouble codes. Fixing the problems causing these codes usually require technical skills and knowledge. OBD codes, including code P0342, can become too difficult to fix at home. Consulting a mechanic is the best way to resolve car issues linked to this OBD code.

However, you can learn more about the P0342 code by doing some extensive research. You need to check for possible causes and underlying complications linked to this code. After you get all the information you need, consult a reliable repair manual or online repair database to help determine the appropriate course of action.

Also, have your owner’s manual in hand. Some fixes may not be applicable for your vehicle’s make and model. What resolves problems causing a P0342 in a Chevy may not apply for an Audi. If troubleshooting this code becomes too difficult, don’t hesitate to ask a mechanic for help.

Where to Get a New Camshaft Position Sensor for Your Vehicle

Did your vehicle log a P0342 code because of a bad camshaft position sensor? Get your vehicle running like it’s new when you get a top-notch replacement from CarParts.com.

Over one million parts are at your fingertips when you shop with us, including a top-notch camshaft position replacement for your daily driver. Carefully handpicked by a team of industry professionals, our camshaft position sensors passed stringent testing procedures, so you’re sure they’re built to last.

Don’t sweat about finding the right part for your ride when you shop from us. Simply enter your vehicle’s year, make, and model into our vehicle selector to narrow down the catalog to compatible camshaft position sensors for your daily driver. You can also use the search filters to find a product according to your preferred brand, price range, quantity, and more.

Here at CarParts.com, all our products come with a low-price and lifetime replacement guarantee, so you don’t have to worry about breaking the bank for your repairs.

Thanks to our strategically located warehouses across the US, we can get your new camshaft position sensor delivered straight to your doorstep in as fast as two business days.

Shop now and resolve this trouble code in no time!

About The Authors
Reviewed By Richard McCuistian, ASE Certified Master Automobile Technician

Technical Reviewer at CarParts.com

Richard McCuistian has worked for nearly 50 years in the automotive field as a professional technician, an instructor, and a freelance automotive writer for Motor Age, ACtion magazine, Power Stroke Registry, and others. Richard is ASE certified for more than 30 years in 10 categories, including L1 Advanced Engine Performance and Light Vehicle Diesel.

Written By CarParts.com Research Team

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.

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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CarParts.com Research Team and Richard McCuistian, ASE Certified Master Automobile Technician