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2019 340i B58 Oil Leak & Check Engine Light - VANOS Issue?

0

Heather Y. · rep 0 · May 22, 4:10 AM · 1 replies · solved · Question

Hey everyone,

I've got a 2019 BMW 340i (G20) with the B58 engine, just hit around 55k miles. Lately, I've been noticing a faint oil smell, especially after driving, and a small drip on my garage floor. Nothing major, but it's there.

This morning, the check engine light came on, and the car felt a bit rough at idle, almost like a slight stumble. I pulled the codes with my OBD scanner, and I'm seeing P0012 and P0015, which point to VANOS timing over-retarded. Could this be related to the oil leak? I'm worried about potential engine damage.

Has anyone experienced this combination of issues on their B58? What should I be looking for? Is this a common problem for this model year and engine?

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 22, 4:10 AM

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ClearTheCode guidance (Bmw · Buying & ownership)

Summary: For 2019 340i B58 Oil Leak & Check Engine Light - VANOS Issue?, work through these steps on your 2016+ vehicle:

  1. Confirm the symptom — note when it happens (cold start, highway, after fuel fill, etc.).
  2. Scan codes — save all pending/stored DTCs; don't clear until you've recorded them.
  3. Check TSBs & recalls — look up your VIN for open campaigns and known fixes.
  4. Inspect the obvious — related fuses, connectors, fluid level, and recent repairs.
  5. Test the common fix — follow model-specific service procedures; one change at a time.
  6. Escalate if needed — burning smell, no brakes, overheating, or stalling in traffic → shop visit.

Owner reported: Hey everyone,

I've got a 2019 BMW 340i (G20) with the B58 engine, just hit around 55k miles. Lately, I've been noticing a faint oil smell, especially after driving, and a small drip on my garage floor. Nothing major, but it's there.

This morning, the check engine light came on, and the car felt a bit rough at idle, almost like a slight stumble. I pulled the codes with my OBD scanner, and I'm see…

This is educational guidance, not a substitute for hands-on diagnosis.

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