This is the official 2013 PACCAR MX diagnostic service manual covering injector solenoid fault P1206 code P1206, a short circuit condition detected between ECU D420 pins A3 and A4 on cylinder 5. Published by PACCAR, this technical document provides mechanics and workshop technicians with detailed electrical schematics, component specifications, and step-by-step troubleshooting procedures for diagnosing and resolving fuel injector solenoid failures on MX-series engines compliant with EPA 2013 emissions standards.
The manual outlines the fault code activation criteria, electrical specifications for the injector solenoid valve assembly, and the complete diagnostic workflow required to isolate and repair the root cause.
Document details and specifications — injector solenoid fault
| Brand | PACCAR |
| Model coverage | MX Engines (EPA 2013) |
| System/Group | DTCs / MX Engines (EPA2013) |
| Publication number | P1206 |
| Year/Revision | 2013 |
| Pages | 4 |
| File size | 0.5 MB |
| Format | |
| Language | English |
Table of contents
- Fault code description and information (MIL activation, drive cycle recovery)
- Component description and control strategy (fuel injection operation and calibration)
- Injector codes and reprogramming requirements
- Diagnostic condition and fault set/reset criteria
- Electrical wiring diagrams for connectors D420, B460, B461
- Connector pinout mapping (D420 ECU pins A1–A12 to injector solenoid circuits)
- Technical data and resistance specifications (injector solenoid valve cylinder 5)
- Step-by-step diagnostic troubleshooting procedure
- Component replacement and DAVIE verification workflow
- Verification drive cycle procedure
Applies to these models
This injector solenoid fault P1206 code P1206 guide applies to all 2013 PACCAR MX-series diesel engines built to EPA 2013 emissions standards. The document specifically addresses cylinder 5 fuel injector solenoid control circuits and the ECU communication pathway through connector D420. For official engine support and manufacturer specifications, visit PACCAR official.
Who needs this injector solenoid fault P1206 code P1206 manual
Diesel engine mechanics, truck technicians, and workshop owners servicing PACCAR MX engines need this reference to diagnose electrical faults in fuel injector solenoid circuits. The manual is essential for technicians using DAVIE diagnostic software and performing electrical troubleshooting on MX-powered trucks.
The complete solenoid fault P1206 code P1206 diagnostic manual is available in the DiagTechPro manuals library. A free account is required to download the full PDF document.
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