AutoCodesGeneric – P0342

P0342 Code - Camshaft Position Sensor 'A' Circuit Low Input

Quick Answer

The Camshaft Position Sensor is an electronic device used in an engine to record the rate at which the camshaft is spinning. Common causes include Faulty Camshaft Position Sensor, Camshaft Position Sensor harness is open or shorted, Camshaft Position Sensor circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P0342 indicates Camshaft Position Sensor 'A' Circuit Low Input.
Common causes
Common causes include Faulty Camshaft Position Sensor, Camshaft Position Sensor harness is open or shorted, Camshaft Position Sensor circuit poor electrical connection.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
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Code Popularity 82,006
How popular is this code, among other codes? Medium
Table of contents Created and updated by William Orellana on Aug 26, 2022
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Code P0342 Description

The Camshaft Position Sensor is an electronic device used in an engine to record the rate at which the camshaft is spinning. This information is used by the Engine Control Module (ECM) to control ignition and fuel injection. The camshaft position sensor senses the retraction of the camshaft (intake) to identify a particular cylinder. The camshaft position sensor senses the piston position. The sensor system consists of a rotating part, typically a disc, as well as a static part, the actual sensor.
When the engine is running, the high and low parts of the teeth cause the gap with the sensor to change. The changing gap causes the magnetic field near the sensor to change. The change in the magnetic field causes the voltage from the sensor to change.
When the crankshaft position sensor (POS) system becomes inoperative, the camshaft position sensor provides various controls of engine parts instead, of utilizing the timing of cylinder identification signals.
OBDII Code P0342 - Camshaft Position Sensor 'A' Circuit Low Input - AutoCodes.com
P0342 Code - Camshaft Position Sensor 'A' Circuit Low Input

What are the Possible Causes of the DTC P0342?

  • Faulty Camshaft Position Sensor
  • Camshaft Position Sensor harness is open or shorted
  • Camshaft Position Sensor circuit poor electrical connection
  • Faulty starter motor
  • Starting system circuit
  • Dead (Weak) battery

How to Fix the DTC P0342?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

Code Tech Notes

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0342 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P0342 code?

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Information for Specific Makes

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0342 Code

1. What are the common symptoms of OBDII code P0342 (Camshaft Position Sensor 'A' Circuit Low Input)?

- Common symptoms include rough idling, stalling, poor acceleration, and difficulty starting the vehicle.

2. What are the possible causes of OBDII code P0342?

- The possible causes of P0342 include a faulty camshaft position sensor, damaged wiring or connectors, low engine oil level, or a timing belt issue.

3. How can I diagnose the cause of OBDII code P0342?

- You can diagnose P0342 by checking the camshaft position sensor for proper function, inspecting the wiring and connectors for damage, and ensuring the engine oil level is adequate.

4. Can a faulty camshaft position sensor cause OBDII code P0342?

- Yes, a faulty camshaft position sensor is a common cause of OBDII code P0342 as it can result in a low input signal to the engine control module.

5. How can I repair OBDII code P0342?

- To repair P0342, you may need to replace the camshaft position sensor, repair or replace damaged wiring or connectors, or address any other underlying issues causing the low input signal.

6. What are the potential long-term effects of ignoring OBDII code P0342?

- Ignoring P0342 can lead to further engine performance issues, reduced fuel efficiency, and potential damage to other engine components over time.

7. Are there any DIY tips for addressing OBDII code P0342?

- DIY tips for P0342 include checking and cleaning the sensor connections, ensuring proper installation of a new sensor, and conducting regular maintenance to prevent future issues.

8. Can a bad timing belt cause OBDII code P0342?

- Yes, a bad timing belt can cause incorrect camshaft timing, leading to a low input signal from the camshaft position sensor and triggering OBDII code P0342.

9. Is it safe to continue driving with OBDII code P0342 present?

- It is not recommended to continue driving with OBDII code P0342 present, as it can lead to potential engine performance issues and further damage if left unaddressed.

10. How much does it typically cost to repair OBDII code P0342?

- The cost to repair P0342 can vary depending on the cause of the issue, but it may range from $100 to $300 for parts and labor at a repair shop.

Discuss the causes and fixes for P0342 OBDII Code

  • 2002 LS1, hard to start and backfires when starting. I replaced cam sensor and still have same problem and code. 102 and 342. I assumed backfire would trigger MAF light and have not replaced MAF...yet. Input?

  • You may have to replaced the Mass Air Flow (MAF), but before you replaced any other part check the following:

    - Air filter (replaced if necessary) 
    - Any object blocking the air through the air filter and MAF
    - The air duct after the air filter housing
    -  Intake hoses after the MAF

  • 1996 s10 truck 2.2 when engine warms up it dies and wont start until engine cools..code po342 is on comp....help!!!!

  • I have Chevrolet optra 2011 the Problem was code p0342
    Camshaft Position Sensor 'A' Circuit Low Input
    I did not find any of these options is the real reason for this cod !

    - Faulty Camshaft Position Sensor
    - Camshaft Position Sensor harness is open or shorted
    - Camshaft Position Sensor circuit poor electrical connection
    - Faulty starter motor
    - Starting system circuit
    - Dead (Weak) battery

    The reason for this problem.

    After work, effort and found CAM shaft rollers were inverted in the sense that the last reel input air was in place output the exhaust and there is a difference between the rollers and CAM shaft because Sensor works only on reel exhaust appears to me that when the testing Sensor that works well.

  • Thanks for the information.

  • I have 2004 VW Jetta BBW engine. 147k miles. Right now my car will not travel over 3,000RPM. I went to the dealership and they said it was a Camshaft position sensor. After I replaced it the car will still not travel over the 3,000 RPM. I scanned it and the code was > P0342 CAMSHAFT POSITION SENSOR A- BANK 1 CIRCUIT LOW INPUT. What I should do now?

  • 05 a CEO has p0342
    P0300
    Replaced all on p0300
    Shift light and engine lite on can't get a sticker..I don't think anything on th r p0342
    I'm helping my daughter abd is costing Mr a lot.I'm a grandma

  • What make, model and year is your vehicle?

  • Hi Auto I have problem with my Toyota Avalon 2003 is doing high starting what can I do

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