PACCAR MX P047D is the fault-code chapter of the 2013 PACCAR MX Diagnostic Service Manual covering an air pressure post-BPV over range fault, the mirror of the under range code that precedes it. Like its twin, it is printed as a one-page reference entry with no diagnostic tree. From description through to verification drive cycle, every field resolves to a single line: contact the Engine Support Center.
Document details at a glance
| Brand | PACCAR |
|---|---|
| Model coverage | PACCAR MX engines, EPA 2013 emissions level |
| System group | DTCs, MX Engines EPA2013 |
| Source publication | 2013 PACCAR MX Diagnostic Service Manual, page 284 |
| Pages | 1 |
| File size | 0.3 MB |
| Format | |
| Language | English |
What the PACCAR MX P047D chapter covers
- The over range wording, which is what separates this code from its under range twin
- Its position directly after the under range entry in the manual
- Confirmation that no set or reset condition is published
- Confirmation that no electrical diagram or technical data appears
- Confirmation that no cause list or step-by-step procedure is given
- The published route: the Engine Support Center
Diagnostic step sequence and verification
Inside PACCAR MX P047D the procedure runs as follows. There is no printed sequence to work through. Read the code as a direction rather than a diagnosis: an over range reading after the back pressure valve suggests the measurement side or the valve control side, and the pressure sensor chapters elsewhere in the manual carry the pin functions and the 5 V key-on checks that let you test those circuits properly.
Trucks and engines it applies to
The entry covers EPA 2013 PACCAR MX engines in Kenworth and Peterbilt trucks that use a back pressure valve, and is retrieved through DAVIE with the rest of the code set. Model programmes and dealer support for these engines are listed on the PACCAR corporate site.
Who needs the PACCAR MX P047D chapter
Diagnostic technicians pull this page when both post-BPV codes appear together, because the pairing tells you more about an unstable signal than either code does alone.
The complete PDF of the PACCAR MX P047D chapter is filed in the DiagTechPro manuals library, where a free account is required to download it alongside the rest of the MX Engines EPA2013 fault-code set.
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