Cummins fault code14426 · Inlet Fuel Supply Pressure Sensor
Inlet Fuel Supply Pressure Sensor
14426 Cummins fault code as shown in INSITE / CaltermSPN520202 · Inlet Fuel Supply Pressure SensorFMI17 Data valid but below normal operating range - least severe levelOBD codenone (J1939 only)LampNo lampCummins textInlet Fuel Supply Pressure SensorFailure modeData valid but below normal operating range - least severe levelWhat Cummins code 14426 means
The reading for Inlet Fuel Supply Pressure Sensor is believed to be correct, but it has gone slightly below the normal operating range. This is the least severe of the three "below range" levels (FMI 17, 18 and 1); it is usually an early warning rather than an immediate problem.
No dash lamp is attached to this code in the Cummins fault table. It is logged in the ECM and shows up in Cummins INSITE (or any J1939 tool reading DM1 / DM2), but on its own it does not light a lamp.
On a generic J1939 scan tool, or on the dash of a Freightliner, Kenworth, Peterbilt, International or Volvo chassis, the same fault is shown as SPN 520202 FMI 17 rather than as Cummins code 14426. Cummins INSITE and Calterm show the Cummins number, the SPN / FMI pair and the lamp together.
Fault code 14426 is defined in the fault tables of the Cummins calibrations we have analysed, so it is a real, current code rather than a legacy number.
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Upload your .xcal →Cummins ECFG / E2M definitions for CM550, CM552, CM554, CM570, CM800, CM850, CM870, CM871 and more: the fault table, torque, fuelling, boost, EGR, DPF and SCR maps, ready for Calterm or WinOLS. Instant download.
Find your ECFG →Other Cummins codes on SPN 520202 Inlet Fuel Supply Pressure Sensor
2 other fault codes share this SPN; each one is a different failure mode (FMI) of the same component.
Related Cummins fault codes
J1939 failure mode identifiers (FMI)
FMI 17 is highlighted. The FMI is the second half of every J1939 fault and tells you how the component failed; the SPN tells you which component.
| FMI | Meaning (SAE J1939-73) |
|---|---|
| 0 | Data valid but above normal operational range - most severe level |
| 1 | Data valid but below normal operational range - most severe level |
| 2 | Data erratic, intermittent or incorrect |
| 3 | Voltage above normal, or shorted to high source |
| 4 | Voltage below normal, or shorted to low source |
| 5 | Current below normal or open circuit |
| 6 | Current above normal or grounded circuit |
| 7 | Mechanical system not responding or out of adjustment |
| 8 | Abnormal frequency, pulse width or period |
| 9 | Abnormal update rate |
| 10 | Abnormal rate of change |
| 11 | Root cause not known |
| 12 | Bad intelligent device or component |
| 13 | Out of calibration |
| 14 | Special instructions |
| 15 | Data valid but above normal operating range - least severe level |
| 16 | Data valid but above normal operating range - moderately severe level |
| 17 | Data valid but below normal operating range - least severe level |
| 18 | Data valid but below normal operating range - moderately severe level |
| 19 | Received network data in error |
| 20 | Data drifted high |
| 21 | Data drifted low |
| 22 | Reserved for SAE assignment |
| 23 | Reserved for SAE assignment |
| 24 | Reserved for SAE assignment |
| 25 | Reserved for SAE assignment |
| 26 | Reserved for SAE assignment |
| 27 | Reserved for SAE assignment |
| 28 | Reserved for SAE assignment |
| 29 | Reserved for SAE assignment |
| 30 | Reserved for SAE assignment |
| 31 | Condition exists |
Questions about code 14426
What does Cummins fault code 14426 mean?
Cummins 14426 is "Inlet Fuel Supply Pressure Sensor". It maps to SPN 520202 FMI 17. The reading for Inlet Fuel Supply Pressure Sensor is believed to be correct, but it has gone slightly below the normal operating range. This is the least severe of the three "below range" levels (FMI 17, 18 and 1); it is usually an early warning rather than an
Which lamp does fault code 14426 turn on?
No lamp: No dash lamp is attached to this code in the Cummins fault table. It is logged in the ECM and shows up in Cummins INSITE (or any J1939 tool reading DM1 / DM2), but on its own it does not light a lamp.
How do I clear or permanently delete Cummins code 14426?
An active code goes inactive on its own once the condition is gone; the inactive record stays in the ECM fault history until it is cleared with Cummins INSITE (or a J1939 tool that supports the DM3 / DM11 clear). If the code keeps coming back because the part is gone, disconnected or not worth repairing, the lasting fix is to disable fault 14426 in the calibration: upload your .xcal to the ECFG Superstore file service, custom DTC delete from $150 (up to 30 codes), full DPF / EGR / SCR delete $500, and flash the returned file with Calterm or INSITE.
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