OBD-II code · Powertrain (generic)
P0619 Alternative Fuel Control Module RAM and ROM Error
The alternative fuel control module reports an internal RAM or ROM check failure - module no longer trustworthy.
Is it safe to drive with P0619?
Usually safe for short trips, but don’t ignore it: the underlying fault can get more expensive over time.
Common causes
- Most likelyModule internal memory fault
- Less likelyModule software outdated, reflash may resolve
- Less likelySupply voltage outside specification
Symptoms
- Check engine light on
- Possible limp mode or no-start
- Multiple follow-up faults across modules
- Reset/relearn may be needed after repair
Repair at a glance
- Difficulty
- Hard
- DIY friendly
- Best left to a mechanic
- Typical labour
- 2–6 h
- Emissions test
- Likely to fail
- Parts involved
- Alternative Fuel Control Module
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.