Why do I get code 385-3 on my Cat?

Why do I get code 385-3 on my Cat?

Shorted 1 and 3 and got codes “212-4” (sensor supply voltage low) and “385-3”. also jumped 1 and 2 and the code stayed at “385-3”. were on sensor Number 3 (from Cat) so the sensor is not the problem. Is it possible the jumper harness we bought from cat is wired wrong?

What is the SPN code for Caterpillar J1939?

The Society of Automotive Engineers (SAE) developed the J1939 standards and SPN code terms have been assigned for specific parameters (component or system circuits) that diagnostic trouble codes (DTC) are associated with. Only the SPN numbers that are intended to be used on Caterpillar ® products are listed.

What is the Suspect Parameter Number ( SPN )?

The Suspect Parameter Number (SPN) is diagnostic fault code terminology found on some Caterpillar ® products using a J1939 CAN data link.

What does a diagnostic code on a cat Mean?

Cat Diagnostic codes are used by the electronic system in order to alert the operator that a problem exists. A diagnostic code also indicates the nature of the problem for you, and you can see what is the code meaning with CatFaultCodes.com service.

What does code 385-3 Iva pressure mean?

Replaced sensor again, same issue, was good for a couple days and came back with code 385-3 active. we replaced the jumper harness from the sensor to the engine harness (right behind AC compressor) and still have the same issue.

What makes a 385-3 open circuit a problem?

Basically, a 385-3 is an open circuit. Most often the problem is the sensor. Since yours has been replaced several times. I would say the sensor is not the problem. The next most common problem is in the harness. But if you have replaced it as well, and still have the code. I must next suspect the ECM.

What do you need to know about SEC 385?

Sec. 385(a) authorizes the secretary of the Treasury to issue regulations “as may be necessary or appropriate to determine whether an interest in a corporation is to be treated . . . as stock or indebtedness (or as in part stock and in part indebtedness).”.