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AutoCodes – Generic – P0382

P0382 Code - Glow Plug/Heater Circuit 'B' Malfunction

Quick Answer

The glow plug system is used to assist in providing the heat required to begin combustion during cold engine temperatures. Common causes include Faulty Glow Plug, Glow Plug harness is open or shorted, Glow Plug circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P0382 indicates Glow Plug/Heater Circuit 'B' Malfunction.
Common causes
Common causes include Faulty Glow Plug, Glow Plug harness is open or shorted, Glow Plug circuit poor electrical connection.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
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Code Popularity 24,603
How popular is this code, among other codes? Low
What is this?
Table of contents Created and updated by William Orellana on Apr 16, 2019
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Code P0382 Description

The glow plug system is used to assist in providing the heat required to begin combustion during cold engine temperatures. The glow plugs are heated before and during cranking, as well as initial engine operation. The Engine Control Module (ECM) controls the glow plug ON times by monitoring coolant temperature and glow plug voltage. The California Glow Plug system has eight individual glow plug supply circuits between the controller and the glow plugs. If the feedback voltage from the controller to the ECM is not within range, DTC P0380 will set.
OBDII Code P0382 - Glow Plug/Heater Circuit 'B' Malfunction - AutoCodes.com
P0382 Code - Glow Plug/Heater Circuit 'B' Malfunction
What does this mean?

What are the Possible Causes of the DTC P0382?

  • Faulty Glow Plug
  • Glow Plug harness is open or shorted
  • Glow Plug circuit poor electrical connection

How to Fix the DTC P0382?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0382 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P0382 code?

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Need Help with the Code?

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Information for Specific Makes

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0382 Code

No Frequently Asked Questions about P0382 Code found.

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