This document is the 2013 PACCAR MX diagnostic service manual section covering the PACCAR MX P0562 ECU supply fault code, published by PACCAR for their MX engine line. It provides mechanics and technicians with complete diagnostic procedures, set conditions, and step-by-step troubleshooting instructions for addressing low voltage conditions on the Engine Control Unit (ECU) power supply pins B60, B61, or B62.
The manual identifies P0562 as an internal PCI (Powertrain Control Interface) issue related to ECU power supply voltage that is too low. This code activates the Malfunction Indicator Lamp (MIL) on the first trip and typically clears after three drive cycles once the fault is resolved. Understanding this PACCAR MX P0562 fault code is critical because numerous diagnostic functions will not run while this condition is active.
Document details and specifications — PACCAR MX P0562
| Brand | PACCAR |
| Model coverage | MX engines (EPA 2013) |
| System/Group | DTCs / MX Engines |
| Publication number | 2013 PACCAR MX Diagnostic Service Manual |
| Year/Revision | 2013 |
| Pages | 2 |
| File size | 0.3 MB |
| Format | |
| Language | English |
Table of contents
- P0562 fault code description and information
- Set and reset conditions for PACCAR MX P0562
- Description and location of components (internal PCI)
- Diagnostic conditions and continuous monitoring
- Possible causes
- Additional information and diagnostic overview
- Step-by-step diagnostic procedure with five verification steps
- Visual inspection of connectors and harnesses (Step 1)
- Battery power and ground verification with key OFF (Step 2)
- 12-volt ignition power verification with key ON (Step 3)
- PCI failure diagnosis and Engine Support Center contact (Step 4)
- Drive cycle verification procedure
Applies to these models
This diagnostic manual applies to all PACCAR MX engines manufactured for the 2013 EPA emissions standard. The PACCAR MX P0562 fault code procedure is specific to trucks equipped with PACCAR’s Powertrain Control Interface and applies to any vehicle running the 2013 MX engine line. For additional engine specifications and OEM harness information, refer to the original equipment manufacturer (OEM) manual referenced in the diagnostic steps. PACCAR official website
Who needs this PACCAR MX P0562 ECU supply manual
Truck mechanics, diesel technicians, and workshop owners diagnosing low ECU voltage conditions need this PACCAR MX P0562 guide. Fleet maintenance departments troubleshooting MIL activations and power supply faults on PACCAR MX engines will find the step-by-step procedures essential for accurate fault isolation and repair validation.
The complete PACCAR MX P0562 diagnostic manual is available in the DiagTechPro manuals library. A free account is required to download the full PDF document and access additional PACCAR diagnostic resources.
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