Excessive Time to Enter Alternative Fuel Control

Check these first

• A slow alternative fuel switching valve
• Low alternative fuel pressure delaying the transition
• A control module slow to enable alternative fuel mode
• A restricted alternative fuel line to the injectors
• A failed alternative fuel pressure or temperature sensor delaying the switch

What to do next

1. Read alternative fuel mode status on a scan tool
2. Command the alternative fuel switch and watch transition time
3. Check alternative fuel pressure and level
4. Inspect the switching valve and lines for restriction
5. Replace the switching valve or module if the transition stays slow
6. Clear the code and retest

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