P0382: Glow Plug/Heater Circuit B Malfunction
HighPowertrainDiesel System
What does P0382 mean?
P0382 is a diagnostic trouble code indicating "Glow Plug/Heater Circuit B Malfunction". The ECU is detecting a voltage reading that is below the expected range in the diesel system circuit. This typically points to a wiring short, a faulty sensor, or a grounding issue.
Common causes
- Damaged or corroded wiring harness
- Loose or disconnected electrical connector
- Failed diesel system sensor or actuator
- Blown fuse in the related circuit
- Poor ground connection
What should you do?
This is a significant issue that should be diagnosed and repaired soon. Avoid long trips or heavy driving until the problem is resolved. Continued driving may cause additional damage.
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Code P0382 can mean different things depending on your vehicle. TorqueBot gives you a diagnosis specific to your make, model, and year.