P2343 - OBD Trouble Code

1. Knock Sensor - Illumination of the check engine light will take place if the knock sensor is faulty. Replace it with a new knock sensor from PartsAvatar.
2. Cylinder Head Gasket - There will be white smokes from the exhaust pipe of your vehicle if the cylinder head gasket is faulty. Replace it as soon as possible.
3. Sensor Connector - In order to avoid the P2343 error, the damaged sensor connector has to be fixed.
4. Intake Manifold - Misfiring of the engine is a common symptom for a faulty intake manifold. Get rid of it quickly.
5. Engine Control Module - Does your engine stall very often? Do you find trouble during acceleration? Then the ECM can turn out to be defective which has to be replaced as soon as possible.
6. Fuel Injector - Difficulty in starting your vehicle indicates that the fuel injector is damaged. Replace it as soon as possible.
7. Spark Plug - The engine will keep surging or it will hesitate to start if the spark plugs are faulty. Replace them immediately to avoid the P2343 error code getting stored.
8. Powertrain Control Module - The powertrain control module will monitor and compensate for any change in altitude and looks after the overall health of your car. The right replacement for your faulty powertrain control module can be found at Parts Avatar at the best prices.

Interested in knowing the symptoms to OBD code P2343? If yes, then you have arrived at the right place. We at PartsAvatar have listed out few common symptoms associated with this fuel injector problem.

Common Symptoms

• The vehicle will refuse to accelerate while starting and there will be power loss along with spark knock and the service engine soon lamp well lit.
• You might notice the warning light of the service engine soon lamp which will remain constant or it may shut down irregularly and stay on for a prolonged time and then shut down for small or long timing.

After understanding the symptoms and few common causes behind the OBD error code, we are here to help you out in understanding the ways and means to correct the issue. To solve any issue, you need to follow certain steps, and to solve OBD error code P2343, you will need to undergo the following replacements:

• The defective fuel injector must be replaced.
• The faulty spark plugs need replacement.

If you need any parts to fix this problem you can easily find them with us. Not only that we also have in stock the best in range auto parts and that too at the most budget-friendly prices ever online. Whether you need a best-priced PCM, ECM, spark plug, intake manifold, fuel injector, knock sensor, cylinder head, sensor connection you can simply rely on us for quality auto parts.

It is essential to diagnose this fault code. Here are some steps which a mechanic should follow for diagnosing the problem that triggered a P2343 code to be stored:

• Multiple or single knock sensors which thread into the engine block is used by the manufacturers.
• At least 2 block sensors- 1 for each cylinder is needed by the V-shaped engine blocks.
• Other automakers will ensure that their vehicle is well-fitted with knock sensor for each individual cylinder.
• The engine bank which contains the cylinder 1 is known as bank 1 and this #1 cylinder is not available in the bank 2.
• The low voltage signal is used by the knock sensor which is a single wire sensor to sense the adequate engine noise.
• If more internal engine noise is found, the knock sensor will be grounded which finishes off the circuit by finally delivering the 5V input voltage signal to the powertrain control module.
• The PCM looks after the voltage of the knock sensor and acts as needed.
• Once an unusual signal from the knock sensor is received by the PCM, the engine time is adjusted so as to reduce the noise and minimize further damage.
• To diagnose this issue, a scanner and DVOM is needed.
• The service manual is needed to correctly diagnose this issue.
• Begin your diagnosis by visually inspecting every wires and connector with a scanner.
• The damaged and defective wires and connectors have to be replaced as needed.
• After inspecting them, clear all codes and retest the vehicle to see if any malfunctioning has occurred. After every component works properly, recover the codes and freeze frame data by connecting a scanner to the vehicle.
• Test drive your vehicle and you will find an irregular condition if the error does not come immediately.
• Each time a repair is done, double check the entire process to make sure it’s successful.
• After inspecting them, clear all codes and retest the vehicle to see if any malfunctioning has occurred.
• If the code fails to return quickly, the erratic condition may prevail.
• In one such situation, you have to worsen the condition of the vehicle before proceeding for further diagnosis as this is a challenging task.
• Fill the engine with clean oil and proceed with the diagnostic process by listening for more engine noise.
• Diagnostic trouble codes which are stored in the PCM must be fixed first before trying to diagnose other issues.
• Oil pressure test has to be done manually if you hear strange engine noise and the finding has to be compared with the manufacturer.
• Change the damaged engine parts as needed.
• Clear all codes and retest the vehicle to see if the repair was fruitful.
• Remove the electrical connector from the affected sensor and check for sensor resistance if no error is found and the engine works smoothly.
• Check the findings along with the manufacturer’s specification and fix the sensor as required.
• Clear all codes and retest the vehicle to see if the repair was fruitful.
• Take away the connector from the knock sensor and check the resistance voltage if the sensor function normally.
• If the reference voltage is absent, check the circuit for molten, broken or short wires to the knock sensor.
• Most technicians report the failure because of the engine oil which is poured into wires and connectors of the knock sensor rather than the wires and connectors which are dry and as well as clean.
• Connectors which is attached to the knock sensor and its controller must be removed if the system wire works properly.
• Continuity and resistance test have to be performed on all circuits that are affected.
• Check the findings along with the manufacturer’s specification and fix the components which fail to obey.
• Clear all codes and retest the vehicle to see if the repair was fruitful.
• Few of the knock sensors are fixed close to the engine making it difficult for testing.
• Most of the vehicle which has one such knock sensor have to be diagnosed through an elimination process which makes the knock sensor as the last possible chance for failure.
• Make sure that the knock sensor is not threaded in the coolant passage of the engine block as you change them.
• The skin of the technicians could face severe burns if the knock sensor is taken off from the coolant passage of the hot engine.

Common Mistakes When Diagnosing The P2343 Code

• The entering of the fuel injector calibration into the PCM is mandatory.
• Broken fuel injector.
• PCM might be broken.
• Electrical wiring issues.