Question 1

What does P0380 mean?

Accepted Answer

P0380 - Glow Plug/Heater Circuit A. General glow plug heater circuit fault.

Question 2

What are the symptoms of P0380?

Accepted Answer

Check engine light, Hard cold starting, White smoke, Rough running when cold

Question 3

What causes P0380?

Accepted Answer

Glow plug relay failure, Glow plug module failure, Multiple failed glow plugs, Wiring issue

Question 4

How much does it cost to fix P0380?

Accepted Answer

Typical repair cost: $50-$500. Check glow plug relay first — it's the most common single failure point.

P0380 — Glow Plug/Heater Circuit A

Don't guess — diagnose P0380 the right way