Cummins ISM CM875 (2003-06) Fault Code: 352 PID: S232 SPN: 1079 FMI: 4/4 Sensor Supply 1 Circuit – Voltage Below Normal or Shorted to Low Source. Low voltage detected at sensor supply number 1 circuit.

Low voltage on the +5 volt supply wire can be caused by a short circuit to ground in a supply wire, a short circuit between a supply wire and a return wire, a malfunctioning sensor, or a malfunctioning ECM power supply.

Possible repair:

1)Replace the barometric pressure sensor.
2)Replace the engine oil pressure sensor.
3)Replace the digital vehicle speed sensor.
4)Replace the remote accelerator position sensor.
5)Repair or replace the engine harness.
6)Replace the ECM.
7)Replace the OEM harness.