Service bulletin 167-T1522-12

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.

NHTSA's summary

TT-15-026 Subject vehicles may exhibit a MIL lamp on with reduced engine power due to a restriction in the exhaust system such as a plugged DPF. The technician may find DTC?s (Diagnostic Trouble Codes) such as P244B, P141F, P226C, and P0299 stored in the engine ECU. If any of these DTC?s are present, it is important to inspect for an exhaust restriction before suspecting an issue with the turbocharger. Codes P0299 (Underboost) and P226C (Slow VNT Response) can set when the exhaust has a restriction. Many turbochargers have been returned to Hino through warranty which test good upon inspection. These turbochargers were replaced during the same repair of a plugged DPF. Turbochargers returned through warranty will now be subject to claim denial if they were incorrectly condemned upon the same repair where an exhaust restriction was present.

The document

• NHTSA's copy of the document (PDF)
• If that address does not open, try this one

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Engine, Exhaust and emissions

Trouble codes named

P0299, P141F, P226C, P244B

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

• Bulletins for another vehicle
• Report an error on this page
• Report an error by email