Repair cost
$350–$750
DIY difficulty
2 / 5
Severity
Major
Costly to ignore — plan a fix within weeks
Affected
2019-2021
FA24, PCV valve
What goes wrong
PCV valve seat fails, dumps oil into intake and engine bay.
Symptoms to watch for
- Oil on undertray
- Smoke on cold start
- High oil consumption
Root cause
Cracked PCV valve casting from heat cycling.
In-article ad
Buy time with these
- • Check oil weekly until replaced
Permanent fix
- Replace PCV valve and clean intake.
Related recalls / TSBs
TSB 02-181-21
FAQ
What causes ascent pcv valve oil leak?
Cracked PCV valve casting from heat cycling.
How much does it cost to fix?
National average $350–$750.
Is this a DIY repair?
Difficulty 2/5. Replace PCV valve and clean intake.
What are the symptoms?
Oil on undertray; Smoke on cold start; High oil consumption
Sources
- • NHTSA
- • Subaru Owner Forums