DEF Injector - Functional
The HINO-P2047 (Hino) diesel fault code means: DEF Injector - Functional. This is a serious severity code.
- Keep driving?
- Short distances only
- DIY difficulty
- intermediate
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What Are the Symptoms of HINO-P2047?
- Check Engine light
- SCR malfunction lamp
- DEF injection and NOx purification stopped
- Output restricted after 500 miles and speed after 2,000 miles if it persists
What Causes HINO-P2047? (Most Likely First)
- DEF injector clogged with crystallized DEF High
- Failed DEF injector Medium
Can I Still Drive with HINO-P2047?
Short distances only. HINO-P2047 is rated serious severity. Keep trips short and get it diagnosed soon rather than waiting for symptoms to worsen.
Frequently Asked Questions
What does P2047 mean on a Hino?
P2047 means DEF Injector - Functional. The DCU checks the DEF injector from its circuit current waveform while the engine runs with DEF pressure above 350 kPa, and sets the code when the waveform's second derivative stays below 80 A/s² fifty times in a row. Hino suspects clogging from crystallized DEF.
Is P2047 a Hino-specific code?
P2047 is an SAE-format powertrain code, but the title and the conditions here are Hino's own, read from Hino's service documentation, not a generic definition.
Mechanics Guide Step-by-step diagnosis
How Do You Diagnose HINO-P2047?
Remove and inspect the DEF injector tip for crystallization.
Replace the injector if it does not pass the functional check with the diagnostic tool.
Sources 2
This page is built from documented references. Verify against your own service info before repair work.
- Hino Workshop Manual, HINO 238 / 258LP / 268 / 338 series with J08E-VB and J08E-VC engines, DEF SCR System (DCU) chapter, DTC P2047 "DEF Injector - Functional"technical description and detection conditions. Distributed through Hino's dealer service portal; no public link.
- SAE J2012Diagnostic Trouble Code Definitions (defines P2047 as a generic OBD-II code)
P2047 on Other Platforms
The same code ID appears across other engines, vehicles, and equipment. Diagnostic flow varies by platform — see the matching breakdown:
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