OBD-II code · Powertrain (generic)
P0382 Glow Plug/Heater Circuit B
A general electrical fault on glow-plug heater circuit B — typically the second bank of glow plugs on an inline-6 or V-engine.
Is it safe to drive with P0382?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyGlow plug or harness failed
Symptoms
- Glow plug warning light on (often orange coil symbol)
- Hard cold start or no start in cold weather
- White smoke from exhaust during warm-up
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.5–2.5 h
- Emissions test
- Likely to fail
- Parts involved
- Glow Plug, Glow Plug Control Module
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.