OBD-II code · generic
P04DD
Cold Start EGR A Flow Insufficient Detected
- System
- P0 — Powertrain (generic)
- Severity
- Moderate (3/5)
- Can I keep driving?
- Drive with caution
What does P04DD mean?
P04DD is defined as “Cold Start EGR A Flow Insufficient Detected”.
Drive gently and only as far as you need to; have it checked as soon as possible.
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This page is general information; an exact diagnosis needs measurements and a technician’s check.