What do the p0243 Cummins error codes mean? It means there is a malfunction in the wastegate actuator solenoid. As well as we know, it is a diagnostic code for a faulty fuel injection system. Meanwhile, it represents an open or short circuit in the electrical power supply to the fuel injector.
The p0243 error code can happen for several reasons: faulty wastegate actuator solenoid, broken wires, blown up fuse, corroded solenoid connectors, fault in the engine control module, and defective wastegate control valve.
Check out the probable causes and the symptoms experienced by many Cummins engine troubleshooters.
|Faulty wastegate actuator solenoid||Replace the faulty wastegate actuator solenoid|
|Broken wires||Change the broken wires|
|Blown up fuse||Replace the blown-up fuse|
|Rusted ignition coils||Replace the ignition coil|
|Fault in the engine control module||Replace the engine control module|
|Faulty Wastegate Regulate Inlet||Replace it.|
However, let’s check all the reasons and solutions to fix the p0243 error codes in the below guide.
Faulty Wastegate Actuator Solenoid
The main reason behind this problem is a faulty wastegate actuator solenoid. You will see your vehicle flashing the p0243 error code. It will also give your truck less boost during starting and cause starting issues.
Solution: In this case, you need to replace the faulty wastegate actuator solenoid to solve this issue.
In some cases, the wires can be broken at the wastegate actuator solenoid to cause this problem. It can show a check engine light message on your 2004 Dodge Ram 2500 SLT Cummins pickup along with the p0243 error code.
Solution: To solve this p0243 code dodge Cummins issue, you have to use a multimeter to check for continuity in the wiring harness and replace any broken or shorted wires
Blown Up Fuse
Sometimes, your 2005 Dodge Ram 2500 SLT Cummins pickup shows the p0243 error code. In your pickup, there is a fuse that both the A/C fan clutch circuit and the Wastegate Solenoid share. This fuse can be blown up and cause this error code.
Solution: To solve this p0243 fuse issue, you must find out and replace the blown-up fuse.
Rusted Ignition Coil
Some people have reported facing the 2005 Cummins p0243 code issue on their 2005 Dodge Ram 3500 Laramie Cummins pickup. They also said they had faced this problem after their pickup was idle for one week, and they only bought their pickup two weeks ago. Also, they noticed the check engine light came on.
Also Read: P1507 Cummins | Solve The Dodge Trouble Code
If you also face this problem, then you need to know that this problem happens for rusted solenoid coils. Also, if there is any issue in the solenoid connectors, then the p0243 error code can start flashing.
Solution: To solve this p0243 code 05 Cummins engine issue, you need to replace the solenoid connectors or clean them with corrosion remover.
Fault In The Engine Control Module
Sometimes you can get the p0243 error code and rough running issues on your vehicle. However, this error code means the wastegate solenoid actuator is malfunctioning.
Mainly the wastegate solenoid actuator is regulated by the engine control module (ECM), and if there is any fault, you will show the p0243 error code.
Solution: In this case, find out the root of the fault in the engine control module to remove this error code.
Faulty Wastegate Regulate Inlet
You can also face the p0243 error code issue on your 2004 dodge 3500 5.9l Cummins pickup for a defective wastegate control valve. In addition, you will see the check engine light come on.
Solution: In this case, you need to replace the faulty wastegate regulator nozzle to solve the issue.
A Helpful Tutorial You May Need!
Frequently Asked Questions (FAQs)
How do I fix code P0243?
How much horsepower does a 59 Cummins have?
How much horsepower can you get out of a stock 24 valve Cummins?
The p0243 Cummins code is a bit of a mystery. Many problems can cause it, and the diagnosis is not always straightforward. It is a diagnostic trouble code set when the engine control module (ECM) detects fuel pressure control system issue.
It can be set if the ECM detects a problem in the fuel pressure regulator or an open or shorted fuel pressure regulator circuit.
To assist you, we’ve compiled a list of six possible causes and solutions for this error code, which you can review below. We keep hoping that you, too, are now able to resolve the error code concern effectively.
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Meet our senior writer and content manager of Automasterx. He has worked in several mechanical garages and mastered different vehicle diagnoses and parts repair. He never stops until finding out the ultimate solutions for any vehicle fault code. However, ensuring the only solid solutions for each vehicle malfunction is his core part of the duty, alongside analyzing fault codes and signals.