This is the official PACCAR P1050 exhaust pressure diagnostic manual for 2013 MX engines operating under EPA2013 emissions standards. Published by PACCAR as part of their MX Diagnostic Service Manual, this 5-page technical document provides mechanics and workshop owners with comprehensive fault code information, electrical diagrams, and step-by-step repair procedures for pressure sensor faults detected after the bypass valve.
Document details and specifications — PACCAR P1050 exhaust
| Brand | PACCAR |
| Model coverage | PACCAR MX Engines |
| System/Group | DTCs / MX Engines (EPA2013) |
| Publication no. | 2013 PACCAR MX Diagnostic Service Manual |
| Year/Revision | 2013 |
| Pages | 5 |
| File size | 0.4 MB |
| Format | |
| Language | English |
Table of contents
- Code number P1050: Pressure after BPV – Data erratic, intermittent, or incorrect
- Fault code information (MIL trips and recovery cycles)
- Description of component(s) and effect on system
- Location of component(s)
- Diagnostic condition and set/reset conditions
- Electrical diagram(s) and wiring harness connectors (D420, F823)
- Technical data: Component and wiring check for ECU (D420)
- Preparation steps and possible causes
- Diagnostic step-by-step troubleshooting (Steps 1–5)
- Verification drive cycle procedure
Applies to these models
This PACCAR P1050 exhaust pressure diagnostic manual applies to PACCAR MX engines manufactured in 2013 with EPA2013 emissions compliance. The troubleshooting procedures cover the after-BPV pressure sensor (F823), the PCI ECU (D420), exhaust system blockages, and DPF pressure sensor deviations. For official PACCAR engine support and technical specifications, visit PACCAR official site.
Who needs this P1050 exhaust pressure manual
This PACCAR P1050 manual is essential for diesel truck mechanics, workshop owners, and technicians diagnosing MX engine fault codes. The document guides repair professionals through sensor inspection, electrical testing, and component replacement to resolve intermittent or erratic pressure readings after the bypass valve.
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