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Cat Man
Cat Man, Cat Engine Expert
Category: Medium and Heavy Trucks
Satisfied Customers: 8414
Experience:  I am ASE Master Truck Certified.
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Code 232 - 4 5 volt supply low, 5ek11906, Yes, Check engine

Customer Question

Code 232 - 4 5 volt supply low
JA: What is the complete model and serial number of your machine?
Customer: 5ek11906
JA: Are you fixing this yourself? What have you tried so far?
Customer: Yes
JA: Anything else you want the equipment mechanic to know before I connect you?
Customer: Check engine light on
Submitted: 1 month ago.
Category: Medium and Heavy Trucks
Expert:  Cat Man replied 1 month ago.

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.

Expert:  Cat Man replied 1 month ago.
Hey. I just wanted to see how things were going. Please let me know if you need more help. I am happy to assist. If my information was helpful, please leave a good or higher rating so that I receive credit. Thanks.