Remember: Many RFC codes are symptoms, not root causes. A code like rarely means a dead pump – often it's a $15 fuel filter or a $60 suction valve. Use the free resources above, take systematic steps, and you'll have your Stralis back on the road without a hefty repair bill.
Bookmark this page. Then go write down your current RFC codes on a sticky note in your glove box. Next time a code appears, you'll be ready. Disclaimer: This guide is for informational purposes. Always follow safety procedures when working on high-pressure fuel systems (up to 2,500 bar). If unsure, consult a professional.
Introduction: The Mystery of the RFC Module