2005 Ford F-250 — dEF warning came back soon after refill — Denver owner

Intermittent stuff lies if you only catch it once. If a shop can't duplicate it on the 2005 Ford F-250, bring a video plus freeze-frame data, not just a story. That's the branch I'd chase this week. On “250 — def warning came back soon,” that was the fork that mattered for me. This is from a 2005 Ford F-250 in Denver with 143,000 miles. Post the numbers (or the code) and people can get more specific. This is the filter I use when the thread starts repeating itself. This is me being the wet blanket on purpose.