Some customers whose vehicles are operated in dusty type environments, such as farming, sweeping, or...
Isuzu technical service bulletin SB19J002 for 2012-2019 Isuzu N-Series.
- Bulletin number
- SB19J002
- Component
- Engine and engine cooling
- Summary
- Some customers whose vehicles are operated in dusty type environments, such as farming, sweeping, or off-road type applications, may comment about the illumination of the check engine light, with one or more of the following dtc's set: p0449 (evaporative emission vent solenoid valve control circuit low voltage), p0446 (evaporative emission vent system performance) and p0455 (evaporative emission system large leak detected). Dirt and dust intrusion into the evap canister vent solenoid valve may cause this condition. If normal diagnostics for any of the above dtcs determines the evaporative emission (evap) canister vent solenoid valve has failed, replace the existing evap canister vent solenoid valve (the "valve") with a new assembly. Then cover the valve and relocate it with the updated parts using the service procedure in this bullentin. (see figure 1.)
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