Medium and Heavy Trucks
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Thanks for asking your question. I can help you with this.
Code 232-5 is defined as a short in the 5 volt circuits to all the sensors. This code is caused by either a shorted sensor, a short in the harness, or a short in the harness.
To troubleshoot just unplug each sensor one at a time, if the 232-4 goes away, the last sensor you unplugged is the problem. IF you unplug them all and you still have the 232-4, then unplug the harness from the ECM. If the code goes away, the harness is shorted. IF it does not go away, the short is in the ECM.
Please reply back if you need more help or have more questions. I am happy to assist.