PACCAR MX P009F is the fault code page for “Checks for stuck HPV by creating a small leak and looking at the MV closed loop trim (intrusive) + causes discharge disable” in the 2013 PACCAR MX Diagnostic Service Manual. PACCAR publishes it for engines in the EPA 2013 emissions family, and it is worked with the DAVIE diagnostic software.
What this fault code means
The manual describes P009F as an intrusive check for a stuck HPV: the control system creates a small leak and watches the MV closed-loop trim to decide whether the valve is holding. The extract also records that the routine causes a discharge disable while it runs, so the code can appear alongside a temporary loss of that function.
PACCAR MX P009F page structure
This is a one-page entry. It carries the code number and the fault code description, then the standard headings used throughout the manual, but the detail under them is not printed on this page. Instead the page states: Please Contact the Engine Support Center.
- Description and location of component
- Diagnostic condition, set condition and reset condition
- Electrical diagrams and technical data
- Possible causes and additional information
- Diagnostic step-by-step and verification drive cycle
Treat the page as a confirmed identification of the code plus an instruction on where the full procedure lives. That is still worth having in writing when a customer asks why the shop is calling the factory.
Document details and format
| Field | Value |
|---|---|
| Brand | PACCAR |
| System group | DTCs, MX Engines (EPA2013) |
| Source publication | 2013 PACCAR MX Diagnostic Service Manual |
| Manual page | 105 |
| Pages | 1 |
| File size | 0.3 MB |
| Format | PDF, English |
Applies to PACCAR MX P009F repairs
The page sits in the DTCs section for MX engines built to the EPA 2013 emissions standard, so it covers trucks running that engine family with the PCI engine control unit. Coverage and dealer support are published on the PACCAR corporate site.
Who needs this PACCAR MX P009F page
Heavy-duty diesel technicians and independent shops that meet an intrusive HPV check on a PACCAR MX engine and want the manual wording before they quote a repair.
The full PDF page is in the DiagTechPro manuals library; a free account downloads it. Keep the PACCAR MX P009F sheet open next to DAVIE.
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