AutoCodes – Honda – P0343 Honda

P0343 Honda Code - Camshaft Position Sensor 'A' Circuit

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
P0343 Honda indicates Camshaft Position Sensor 'A' Circuit .
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 6,438
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jun 14, 2020
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Code P0343 Honda 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 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 cause 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, utilizing timing of cylinder identification signals.
OBDII Code P0343 Honda - Camshaft Position Sensor 'A' Circuit  - AutoCodes.com
P0343 Honda Code - Camshaft Position Sensor 'A' Circuit

What are the Possible Causes of the DTC P0343 Honda?

  • 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 P0343 Honda?

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 P0343 Honda 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.

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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 P0343 Honda Code

1. What are common symptoms of OBDII code P0343 in a Honda related to the Camshaft Position Sensor 'A' Circuit?

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

2. What are the possible causes of OBDII code P0343 in a Honda?

- Possible causes include a faulty camshaft position sensor, damaged wiring or connectors, a faulty timing belt, or issues with the engine control module.

3. How can I diagnose the Camshaft Position Sensor 'A' Circuit issue in my Honda triggering OBDII code P0343?

- You can diagnose the issue by checking the sensor's wiring and connectors for damage, testing the sensor's resistance, and ensuring proper alignment of the sensor with the camshaft.

4. Can I drive my Honda with OBDII code P0343 present?

- It is not recommended to drive your Honda with code P0343 as it can lead to further engine damage and potential safety issues. It's best to address the problem promptly.

5. How do I repair OBDII code P0343 in my Honda caused by the Camshaft Position Sensor 'A' Circuit?

- Repair typically involves replacing the faulty camshaft position sensor, repairing or replacing damaged wiring/connectors, or addressing any issues with the timing belt.

6. Will resetting the OBDII code P0343 in my Honda make the issue go away?

- Resetting the code may temporarily clear the check engine light, but it will not fix the underlying problem causing code P0343. It's important to diagnose and address the root cause of the issue.

7. Can a DIY enthusiast repair OBDII code P0343 in a Honda, or should I seek professional help?

- Depending on your skill level and experience, you may be able to replace the camshaft position sensor yourself. However, diagnosing and repairing wiring or timing belt issues may require professional help.

8. How much does it typically cost to repair OBDII code P0343 in a Honda at a mechanic or dealership?

- The cost of repairing code P0343 can vary based on the exact cause of the issue and labor rates. Generally, expect to pay a few hundred dollars for parts and labor.

9. Are there any preventative maintenance tips to avoid OBDII code P0343 in my Honda in the future?

- Regularly inspecting and maintaining the camshaft position sensor, wiring, and timing belt can help prevent issues that trigger code P0343. Following the manufacturer's recommended maintenance schedule is also crucial.

10. Will OBDII code P0343 affect my Honda's fuel efficiency?

- Yes, code P0343 can lead to poor engine performance, which may affect fuel efficiency. Resolving the issue promptly can help improve fuel economy.

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