SPN 1388 - FMI 4 (Fault Code 298)
Tuesday, August 07, 2018
Fault Codes CUMMINS ISB ISBe QSB4.5 QSB5.9 QSB6.7 ISC QSC8.3 ISL ISLe QSL9 CM850 (CM2850)
SPN1388 FMI4
Auxiliary Pressure Sensor Input 1 Circuit - Voltage Below Normal, or Shorted to Low Source
CODES:
Fault Code: 298
PID(P), SID(S): P223
SPN: 1388
FMI: 4
Lamp: Amber
REASON: Auxiliary Pressure Sensor Input 1 Circuit - Voltage Below Normal, or Shorted to Low Source. Low signal voltage or open circuit detected at the OEM pressure circuit.
EFFECT: None on performance.
Circuit Description:
The OEM has the option of wiring a pressure sensor input to the Cummins ECM. A specific calibration is then created to recognize this pressure sensor input.
Component Location:
The OEM pressure sensor input will vary depending on application. Refer to the OEM troubleshooting manual for sensor location.
Shop Talk:
Possible causes of this fault code include:
• Signal circuit open or shorted to ground in the OEM harness or sensor.
• Supply line open or shorted to ground.
Read More:
SPN 91 - FMI 19 (Fault Code 297)
SPN 1043 - FMI 4 (Fault Code 284)
Blog.Teknisi
Auxiliary Pressure Sensor Input 1 Circuit - Voltage Below Normal, or Shorted to Low Source
 |
| Auxiliary Pressure Sensor Input One Circuit |
CODES:
Fault Code: 298
PID(P), SID(S): P223
SPN: 1388
FMI: 4
Lamp: Amber
REASON: Auxiliary Pressure Sensor Input 1 Circuit - Voltage Below Normal, or Shorted to Low Source. Low signal voltage or open circuit detected at the OEM pressure circuit.
EFFECT: None on performance.
Circuit Description:
The OEM has the option of wiring a pressure sensor input to the Cummins ECM. A specific calibration is then created to recognize this pressure sensor input.
Component Location:
The OEM pressure sensor input will vary depending on application. Refer to the OEM troubleshooting manual for sensor location.
Shop Talk:
Possible causes of this fault code include:
• Signal circuit open or shorted to ground in the OEM harness or sensor.
• Supply line open or shorted to ground.
Read More:
SPN 91 - FMI 19 (Fault Code 297)
SPN 1043 - FMI 4 (Fault Code 284)
Blog.Teknisi
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