P0381 — Glow Plug/Heater Indicator Circuit Malfunction
Category: Powertrain Severity: Low
Updated:
DTC code P0381 means: Glow Plug/Heater Indicator Circuit Malfunction. It falls under the "Powertrain" category, with an estimated severity of Low. Common causes include burned-out indicator bulb or LED, damaged indicator wiring and instrument cluster fault; it's worth confirming the diagnosis before replacing parts.
Possible causes
- Burned-out indicator bulb or LED
- Damaged indicator wiring
- Instrument cluster fault
Symptoms
- Glow plug light doesn't come on
- Check engine light
How to diagnose it step by step
- Switch the ignition on and watch the indicator.
- Check the wiring.
- Check the cluster.
How to fix it
Check whether the indicator lights at key-on. If not, check the bulb, wiring and instrument cluster.
Estimated repair cost
$0–200.
Frequently asked questions
What does DTC code P0381 mean?
Glow Plug/Heater Indicator Circuit Malfunction.
Is code P0381 serious?
Severity Low. Usually a minor fault; check the causes listed.
Can I keep driving with code P0381?
Yes, no problem; wait a few seconds before cold starting.
Related codes
P0380 P0366 P0365 P0356 P0355 P0354 P0353 P0352 P0351 P0345
Refine by car make
🛒 Buy spark plugs and ignition coils at Autodoc (affiliate link)