PACCAR MX P102B is the diagnostic trouble code documented on this 1 page extract from the 2013 PACCAR MX Diagnostic Service Manual, published by PACCAR for EPA2013 MX engines. PACCAR prints the fault as “Temperature after BPV – Voltage too low or short circuit to ground on ECU D420 pin C11”, in the manual’s standard fault code layout.
Document details for PACCAR MX P102B
| 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 | P102B — Temperature after BPV – Voltage too low or short circuit to ground on ECU D420 pin C11 |
| Pages | 1 |
| File size | 0.3 MB |
| Format | |
| Language | English |
Fault code summary and monitor data
No trip MIL count, readiness group or freeze frame type is printed. The fault code information field itself carries the referral instruction.
- 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
This is a one page referral entry rather than a troubleshooting tree. The manual prints every standard heading, from component description and location through diagnostic condition, set and reset conditions, electrical diagrams, technical data, possible causes, additional information, the step-by-step procedure and the verification drive cycle, but leaves them empty behind a single instruction to contact the Engine Support Center.
Set and reset conditions for PACCAR MX P102B
Nothing about set or reset behaviour is published on the page. What the entry does confirm is the code number, the exact wording of the fault description and the affected pin, ECU D420 pin C11, which is the same signal path used by the high voltage version of this fault. Use the page to confirm the code and pin, then follow the Engine Support Center route the manual specifies rather than guessing at thresholds.
Applies to EPA2013 MX engines
The PACCAR MX P102B 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 P102B 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 P102B is in the DiagTechPro manuals library; a free account is required to download it.
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