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P0342 is a diagnostic trouble code (DTC) for "Camshaft Position Sensor Circuit Low Input". This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light diagnostic. Once we are able to diagnose the problem, you will be provided with an upfront quote for the recommended fix and receive $20.00 off as a credit towards the repair. All our repairs are backed by our 12-month / 12,000-mile warranty.
The PCM (powertrain control module) sets code P0242 when it detects that the camshaft position sensor circuit on engine bank 1 is sending a reading that’s erratic or otherwise outside the manufacturer’s settings. The PCM then illuminates the Check Engine light to alert the driver of the problem.
When the camshaft position sensor is working properly, it provides the PCM with data about the camshaft’s position based on how the teeth or notches on the camshaft disrupt its electromagnetic field. The PCM needs this information to provide proper strategies for ignition timing and fuel delivery. When the input is low or otherwise incorrect, the PCM will not have enough information to provide the proper timing for these functions.
There are a number of issues that can trigger a P0242 code. These include:
When the P0242 code is set, there are only a few symptoms that are likely to occur:
After using an OBD-II scanner to identify all stored codes, a mechanic will then visually inspect all wiring and circuits involved in the system. They will make any repairs they see necessary, clear the codes, and retest the system. If they do not see any issues with the wiring or connections and/or these repairs do not solve the issue, they will then check the charge on the battery and test the starter motor, as well. As they perform each diagnostic task and/or repair, they will clear all codes and test the system again until the problem is resolved.
Technicians report that the most common mistake is not a misdiagnosis but rather use of inferior replacement parts. If a replacement sensor is needed, it’s best to use an OEM part, rather than a discount or used part of questionable quality.
Any problem that can make engine function erratic and unpredictable should be taken very seriously. A misfiring engine or one that hesitates or loses power can be incredibly dangerous under otherwise normal driving conditions. Furthermore, this kind of poor performance, if left unresolved long enough, can cause other engine problems, which can lead to much lengthier and more expensive repairs in the future.
If resolved in a timely manner, most of the repairs for a P0242 code are fairly simple and straightforward. They include:
The camshaft position sensor is an essential part of the system that allows your vehicle to run smoothly and reliably. If it is not functioning properly for any reason, you will notice significant symptoms. These will only get worse over time, so it’s important to get the issue resolved ASAP.
This is also important if you need to renew your vehicle’s registration in the near future. In many states, you’ll need to pass an OBD-II emissions test once a year or at least once every two years. If the Check Engine light is illuminated, your vehicle will not be eligible to pass the test, and you will not be able to complete your registration until you resolve the problem. So it makes sense to get it done sooner rather than later.
YourMechanic offers certified mobile mechanics who will come to your home or office to diagnose and repair your vehicle. Get a quote and book an appointment online or speak to a service advisor at 1-800-701-6220.