PACCAR PX-8 CM2150 (2007-09) Fault Code: 386 PID: SID 212 SPN: 3509 FMI: 3 Sensor Supply 1 Circuit – Voltage Above Normal or Shorted to High Source. High voltage detected at sensor supply number 1 circuit.

Verify the electronic control module (ECM) calibration is correct. Check the calibration revision history found on QuickServe® Online for applicable fixes to the calibration stored in the ECM. If necessary, recalibrate the ECM.

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 failed sensor, or a failed ECM power supply.

Possible repairs:

1)Repair or replace the engine harness.
2)Replace the ECM.

Categories DTC TRUCKS, PACCAR, PX-8 CM2150 (2007-09) Tags -, 1, 2007-09, 212, 3, 3509, 386, Above, at, Circuit, Circuit., CM2150, Code, Detected, Fault, FMI, High, Normal, Number, or, PACCAR, PID, PX-8, Sensor, Shorted, SID, Source., SPN, Supply, to, Voltage

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