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Service bulletin PI-0826

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10054123
Published by NHTSA2013-12-21
Manufacturer's numberPI-0826
Manufacturer's date2014-01-01
ReplacesPI-0826-A
NHTSA componentELECTRICAL SYSTEM:SOFTWARE

NHTSA's summary

MACK: UPDATE SOFTWARE INFORMATION REGARDING ENHANCEMENTS FOR ENGINE CONTROL MODULE (ECM) AND AFTERTREATMENT CONTROL MODULE (ACM) ON VEHICLES WITH DIAGNOSTIC TROUBLE CODES (DTCS) P1086, P0420, P205B, P2002 AND LOW COOLANT TEMPERATURE AND LIGHT LOAD. MODEL 2013 CHU, CXU, GU, LEU, MRU, TD. *PE UPDATED 02/26/2014 *JS

The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

Components

Electrical system, Software

Trouble codes named

P0420, P1086, P2002, P205B

Vehicles listed
MACK CHU2013
MACK GRANITE (GU)2013
MACK LEU2013
MACK MRU2013
MACK PINNACLE (CXU)2013

Listing a model year does not mean every vehicle of it is concerned: the document says which.