Detroit Diesel
DDEC flash code
Detroit Flash Code 48: Air Inlet Pressure Low
48 on Detroit Diesel engines means: Air Inlet Pressure Low. The failure mode (FMI 1) is “data valid but below normal operating range (most severe)”.
Code details
- Manufacturer
- Detroit Diesel
- Applies to
- Detroit Diesel Series 60 EGR (DDEC IV)
- Fault code
- 48
- FMI
- 1 — Data valid but below normal operating range (most severe)
- J1587 PID / SID
- PID 106
What to do next
- Read active and inactive codes with the OEM service tool (Detroit Diesel Diagnostic Link) and note the occurrence count.
- FMI 1 tells the shop the type of failure to test for: data valid but below normal operating range (most severe).
- Have a heavy-duty diesel technician confirm the fault against the engine or chassis service manual before replacing parts.
Get this code diagnosed
Send one request and nearby diesel shops and mobile mechanics can quote the repair.
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Related fault codes
Source: Detroit Diesel Series 60 EGR Technician's Guide, DDEC IV EGR fault code table (Table 4-1). See also OBD-II codes.