PACCAR MX P081C is the diagnostic trouble code documented on this 4 pages extract from the 2013 PACCAR MX Diagnostic Service Manual, published by PACCAR for EPA2013 MX engines. PACCAR prints the fault as “CAN communication – message (CCVS_VIC) out of range – park brake switch from vehicle controller”, in the manual’s standard fault code layout.
Document details for PACCAR MX P081C
| Brand | PACCAR |
|---|---|
| Model coverage | PACCAR MX engines, EPA2013 emissions level |
| System / group | DTCs / MX Engines (EPA2013) |
| Source publication | 2013 PACCAR MX Diagnostic Service Manual |
| Fault code | P081C — CAN communication – message (CCVS_VIC) out of range – park brake switch from vehicle controller |
| Pages | 4 |
| File size | 0.6 MB |
| Format | |
| Language | English |
Fault code summary and monitor data
The manual lists 3 drive cycle recovery, no readiness group and a generic freeze frame type. The diagnostic runs continuously when the ignition is on.
- Code number
- Fault code description
- Fault code information
- Description of component(s)
- Set condition of fault code
- Reset condition of fault code
- Possible causes
- Diagnostic Step-by-Step
- Verification Drive Cycle
Component and system background
The manual states that this code relates to a communication issue and not to a specific component, so the component description, location and technical data fields all repeat that line. The signal in question is the park brake switch status carried in the CCVS_VIC message from the vehicle controller.
Set and reset conditions for PACCAR MX P081C
The code changes to inactive as soon as the error is no longer detected. The listed possible cause is short: check the cabin ECU for faults, which is where the message originates before it reaches the engine control side of the network. Verification is done with the brakes set, key ON and the engine off, allowing 10 seconds for the system to initialise and run diagnostics.
Applies to EPA2013 MX engines
The PACCAR MX P081C entry sits in the DTCs / MX Engines (EPA2013) section, so it applies to PACCAR MX engines built to that emissions level. Manufacturer product information is published on the PACCAR corporate website.
Who needs the PACCAR MX P081C fault code page
Technicians reading a live code, foremen writing an estimate and fleet managers deciding whether a truck stays in service all need the manufacturer wording rather than a generic code list.
The full PDF for MX P081C is in the DiagTechPro manuals library; a free account is required to download it.
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