This diagnostic manual covers PACCAR MX EGR pressure and provides official fault code interpretation for technicians servicing 2013 PACCAR MX engines. Published by PACCAR as part of their comprehensive Diagnostic Service Manual, this document addresses the P0407 DTC and guides mechanics through electrical diagnosis of the EGR pressure difference circuit.
The PACCAR MX EGR pressure manual is an essential reference for workshop owners and certified diesel mechanics working on PACCAR-equipped trucks and engines manufactured to EPA 2013 emissions standards.
Document details and specifications — PACCAR MX EGR
| Brand | PACCAR |
| Model coverage | MX engines (EPA2013) |
| System/Group | DTCs / MX Engines |
| Publication number | Not specified |
| Year/Revision | 2013 |
| Pages | 1 |
| File size | 0.3 MB |
| Format | |
| Language | English |
Table of contents
- Fault code description
- Fault code information
- Description of component(s)
- Location of component(s)
- Diagnostic condition
- Set condition of fault code
- Reset condition of fault code
- Electrical diagram(s)
- Technical data
- Possible causes
- Additional information
- Diagnostic Step-by-Step
- Verification Drive Cycle
Applies to these models
This MX EGR pressure reference applies exclusively to 2013 PACCAR MX engines manufactured to EPA2013 emissions standards. It is designed for technicians diagnosing fault code P0407, which indicates EGR pressure difference voltage too low or a short circuit to ground on ECU D420 pin C80. For official PACCAR technical support and engine documentation, visit PACCAR official.
Who needs this MX EGR pressure manual
Diesel mechanics and workshop owners who diagnose and repair PACCAR MX-equipped trucks require this MX EGR pressure manual. The guide is essential for technicians troubleshooting electrical faults in the EGR pressure monitoring circuit and performing systematic diagnostic procedures on 2013 EPA-compliant engines.
The complete MX EGR pressure manual (P0407.pdf, 0.3 MB) is available in the DiagTechPro manuals library. A free account is required to download this diagnostic document.
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