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Hi. Thanks for using JA! I will try and help you out.
Could you get me your engine serial number please? This will help me give accurate information. Thanks!
Thanks for the information.
a 232-4 means there is a short in the 5 volt supply circuit of your engine. This is detected by the ECM.
Your engine has 6 sensors that use this 5 volt supply. The most likely cause is one of the sensors has shorted out and is causing all of the sensors not to report.
It is possible that the problem is in your engine harness or ECM, BUT NOT LIKELY. 90% of the time it is a sensor.
This is normally troubleshot by unplugging each of the sensors one at a time unitl the 232-4 goes inactive. The last sensor that you unplug that causes the code to go in active is your problem.
Please let me know if you have any more questions.
Currently your engine has just the one fault. 232-4. When you unplug the boost sensor for example, if the boost sensor is causing the short, the 232-4 code will no linger be active and you will then have an active code for a Boost sensor current high (open circuit)
If the boost sensor was not the problem, the 232-4 will remain active. Then you just continue unplugging sensor until the 232-4 goes in active.
May I ask how you retrieved the 232-4 code? Do you have a diagnostic tool?