P0342 OBD-II Trouble Code: Camshaft Position Sensor Circuit Low Input

Our certified mechanics come to you · 12-month, 12,000-mile warranty

SCHEDULE P0342 DIAGNOSTIC Get a fair and transparent estimate upfront
Red-stars EXCELLENT RATING ON

Cost of diagnosing the P0342 code

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.

Cars Estimate Credit towards follow-up repair Earliest Availability
Ford$20.00
Toyota$20.00
BMW$20.00
SCHEDULE P0342 DIAGNOSTIC Get a fair and transparent estimate upfront

P0242 code definition

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.

What the P0242 code means

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.

What causes the P0242 code?

There are a number of issues that can trigger a P0242 code. These include:

  • A weak or dead battery
  • An open or shorted camshaft position sensor wiring harness
  • A defective starter motor
  • A problem in the starting system circuit
  • A defective camshaft position sensor

What are the symptoms of the P0242 code?

When the P0242 code is set, there are only a few symptoms that are likely to occur:

  • Illuminated Check Engine light
  • Lack of power or loss of power while driving
  • Engine hesitation
  • Engine misfire
  • Engine stall
  • Hard starts

How does a mechanic diagnose the P0242 code?

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.

Common mistakes when diagnosing the P0242 code

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.

How serious is the P0242 code?

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.

What repairs can fix the P0242 code?

If resolved in a timely manner, most of the repairs for a P0242 code are fairly simple and straightforward. They include:

Additional comments for consideration regarding the P0242 code

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.

Need help with a P0242 code?

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.

trouble codes
P0342
Check Engine Light

Fast and easy Check Engine Light is on Inspection service at your home or office.

SCHEDULE P0342 DIAGNOSTIC
Get a fair and transparent estimate upfront

Recent Check Engine Light is on Inspection reviews

Excellent Rating


YourMechanic Check Engine Light is on Inspection Service

Average Rating

4.8/5

Number of Reviews

4,810

Rating Summary
4,424
187
47
28
124
4,424
187
47
28
124

Joel

19 years of experience
741 reviews
Joel
19 years of experience
Acura RL - Check Engine Light is on - Jacksonville, Florida
very knowledgeable and precise. able to fix electrical issues in my car. Right on time for the appointment.

Christopher

15 years of experience
41 reviews
Christopher
15 years of experience
Honda Accord - Check Engine Light is on - Fairburn, Georgia
Christopher was excellent! He explained everything in detail to make sure I understood. He was professional and provided me with the next course of actions to resolve my care issues. I'm glad he was sent to service my car.

Alexander

18 years of experience
58 reviews
Alexander
18 years of experience
Saab 9-7x - Check Engine Light is on - Kissimmee, Florida
He was very friendly and very helpful . I felt like it was being around a close friend , also gave me so very good advice on my car & future advice about it . Highly recommend mechanic, would use his services again .

Matthew

31 years of experience
639 reviews
Matthew
31 years of experience
Jeep Patriot - Check Engine Light is on - Norfolk, Virginia
Matthew was on time which was a relief, he is very knowledgeable and was easy to understand what was wrong and what was being done. I am recommending to friends and family due to the great experience Matthew gave me. Extremely professional 10/10

More related articles

P006A OBD-II Trouble Code: Manifold Absolute Pressure (MAP) - Mass or Volume Air Flow Correlation
P006A means there is a signal correlation problem between the engine computer and MAF or MAP sensor, likely due to a faulty intake system or sensor.
P0123 OBD-II Trouble Code: Throttle Pedal Position Sensor/Switch (TPS) A Circuit High Input
P0123 code definition Throttle Pedal Position Sensor/Switch (TPS) A Circuit High Input What the P0123 code means P0123 is the generic OBD-II...
B1200 OBD-II Trouble Code: Climate Control Pushbutton Circuit Failure
B1200 means there is an electrical failure in one or more of the climate control system's pushbuttons, likely caused to a damaged pushbutton.

Related questions

Brake, ABS, DSC, Check Engine Light - 2001 BMW 325

If you visited a smaller local repair shop or a garage chain, you may want to take the car to the dealer where they have the proper equipment to extract the fault coes from the system. These mechanics are specialized...

Check engine light is illuminated and the car is not starting

Hey there, thanks for writing in. In the future, please include the code number. There are several codes that this system can set. If you have a crank sensor code, this will cause your car to not start. The...

Code P02A9 Cylinder 4 Balance-Fuel Trim at Limit

The code definition specifically indicates the number four fuel injector is leaking. Fuel trims are used to indicate how much the PCM (powertrain control module) needs to adjust the fuel duty cycle to maintain the proper air fuel ratio. Duty...

How can we help?

Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST.

1-800-701-6230 · hi@yourmechanic.com