Severity: Moderate
Drivable, but it can cause more damage or poor economy. Get it checked within days.
What P0380 means
Problem in the glow plug or intake heater circuit. The engine may be hard to start in cold weather.
Symptoms
- Hard start when cold
- White smoke at startup
- Glow plug light on
Common causes
Most likely first
- 1Failed glow plug(s)
- 2Glow plug control module
- 3Corroded connector or harness
How we diagnose it
- Check each glow plug resistance
- Check module output and supply voltage
Every vehicle sets codes under its own conditions. We check the factory diagnostic steps and service bulletins for your VIN, so the repair targets the actual cause.