Error Code P3437: What It Means & What To Do?

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OBD error code P3437 is an OBD-II generic code. Though its generic, the steps to resolve it might vary a bit depending upon the specific make and model. Your vehicle will flash this OBD error code P3437 when the powertrain control module inspects some performance issues with the cylinder 5 exhaust valve control circuit. To know more about this error code, go through our subsequent sections.

As we all know that the deactivation system are used by vehicle’s ECM to disable selected cylinders when there is no need for additional engine power, you might be wondering how it related to error code P3437. Now, coming back to the topic of our discussion OBD code P3437 will be set by your vehicle’s PCM when it detects some internal issues with the cylinder 5 exhaust valve that prevents it from doing as commanded. Have a look at all the causes which result in the occurrence of this error code.

What causes this problem with the Cylinder 5 Exhaust Valve Control Circuit/Open

• Less than required oil level or pressure
• Congested oil passage
• Mechanical condition with the engine
• Malfunctioning cylinder deactivation solenoid
• Open or shorted cylinder deactivation harness
• Poor electrical connections

1. Powertrain Control Module - Error code P3437 flashing? It might be due to a faulty PCM. Powertrain control module if faulty can cause misinterpretation of correct data thus leading to wrong operational decisions which will affect the transmission and overall engine performance. Thus, replace faulty module and reprogram it now!
2. Engine Control Module - As your car’s ECM is responsible for making the engine and transmission work in synchronisation. Any issue with the engine control module will cause major problems with the efficient running of the vehicle. So, don’t think twice and replace the faulty ECM now to get rid of this error code P3437.
3. Engine Oil - Replace the faulty and incorrect or contaminated oil to solve your problem and get rid off of the OBD error code P3437.
4. Variable Valve Timing Solenoid - If you need to undergo VVT solenoid replacement and are Worried about the cost then you no longer need to worry about that as we have for you best priced parts in stock.
5. Intake Valve - Searching for intake valves for your vehicle make? If yes, then you can easily find that with us. We have in stock high end intake valves from top brands.
6. Oil Filter - Faulty oil filter can hamper the purity of engine oil thus hampering the engine performance. Buy new oil filter now!

It is essential to know the symptoms of an issue as only then you would be able to solve the problem. So that’s why we have listed out some major symptoms of OBD Code P3437 here:

Common Symptoms

• Falling fuel efficiency and engine efficiency
• Engine misfires
• Flashing check engine light
• Illumination of service soon engine light

Here are some ways with the help of which you will be able to correct the OBD Code P3437

• Amend or fix the faulty variable valve timing solenoid
• Clean the corrosion off the connectors
• Repair or replace the bad system wiring
• Also, make sure to clear all the oil passages that are blocked
• Lastly, repair the faulty engine control module

There is no need to be anxious as Parts Avatar – Car Parts Online is here to help you out! We have high grade Ecm, Pcm, Intake Valve, Exhaust Valve, Oil Pressure Gauge, Variable Valve Timing Solenoid, Engine Oil, Exhaust Manifold and a lot more for our precious customers.

Here are some steps which you should follow in order to diagnose this fault code P3437:

Start by checking the engine oil and check if it is serviced up to the needed level. Once this is done, then the next step is to look for all the related components and parts with the cylinder 4 exhaust valve control circuit. Once located, check for any physical damage through an in-depth visual inspection. Check the wiring and connectors for any bare wires, burn spots, scraped etc. After all of this contact a technical to check for the configurations and see if every incorporated component within the cylinder 4 exhaust valve control circuit is in good shape. 

Advanced Steps - These steps will be vehicle specific and will need few technical equipment to ensure the safety and accuracy. You will need a digital multimeter and technical references. Here the oil pressure gauge will help you in your troubleshooting process. 

Voltage Checks - Also the required voltage will depend upon the specific vehicles and the circuit configurations. In case you diagnose the lack of power source or ground, then you might require continuity tests to check the wiring integrity, connectors integrity and other components. Also perform the continuity tests with the power removed. No continuity will be an indication of faulty wiring that is open, shorted or corroded and must be repaired or replaced.

Common Mistakes When Diagnosing the P3437 Code 

Beware of the following misdiagnosis

• Low engine oil level
• Faulty powertrain control module
• Faulty vvt solenoid
• Issues with the system wirings