Repair cost
$0–$350
Free under recall; $300-$350 if out of warranty
DIY difficulty
2 / 5
Severity
Major
Costly to ignore — plan a fix within weeks
Affected
2019-2020
FA24DIT
What goes wrong
PCV valve sticks open, sucking engine oil through the intake manifold into the cylinders. Detonation and rod-bearing failure follow.
Symptoms to watch for
- Sudden oil consumption
- Knock under load
- Carbon buildup on intake valves
Root cause
Defective PCV valve from supplier; addressed in recall WQR-91 / NHTSA 19V-447.
In-article ad
Buy time with these
- • Confirm recall completion via Subaru VIN lookup
Permanent fix
- Recall WQR-91 — updated PCV valve P/N
Related recalls / TSBs
NHTSA 19V-447Subaru WQR-91
FAQ
What causes ascent fa24 pcv valve failure?
Defective PCV valve from supplier; addressed in recall WQR-91 / NHTSA 19V-447.
How much does it cost to fix?
National average $0–$350. Free under recall; $300-$350 if out of warranty
Is this a DIY repair?
Difficulty 2/5. Recall WQR-91 — updated PCV valve P/N
What are the symptoms?
Sudden oil consumption; Knock under load; Carbon buildup on intake valves
Sources
- • NHTSA recall 19V-447