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P0382 OBD2: Glow Plug/Heater Circuit "B"

P0382 OBD2: Glow Plug/Heater Circuit “B”

What Does the P0382 Code Mean?

The P0382 OBD-II code indicates an issue with the Glow Plug/Heater Circuit “B” in diesel engines. This code is set when the engine control module (PCM) detects that the glow plugs, which are essential for pre-heating the combustion chamber in cold weather, are not functioning correctly.

What Causes the P0382 Code?

Several factors can trigger the P0382 code, including:

  • Glow plug control module failure
  • Glow plug failure
  • Powertrain Control Module (PCM) failure
  • Wiring issues

What Are the Symptoms of the P0382 Code?

Common symptoms associated with the P0382 code include:

  • Engine may not start
  • Hard engine start

How Serious Is the P0382 Code?

The P0382 code is considered urgent, as it indicates a significant malfunction that can lead to severe engine damage or pose safety risks to the driver and passengers. Immediate action is necessary to address this issue.

How to Diagnose the P0382 Code

To diagnose the P0382 code, follow these steps:

  1. Use an OBD-II scanner to confirm the P0382 code and check for any additional codes.
  2. Inspect the glow plugs and their wiring for any visible damage.
  3. Test the glow plug control module for proper operation.
  4. Check the PCM for faults if no issues are found with the glow plugs and wiring.

Common Repairs for the P0382 Code

Typical repairs for the P0382 code may include:

  • Glow plug replacement
  • Repair or replacement of the glow plug control module
  • Fixing wiring issues related to the glow plugs

How Much Does It Cost to Fix the P0382 Code?

The cost to repair the P0382 code can vary widely, depending on the specific issue and labor rates in your area. On average, you can expect to pay between $100 and $500 for diagnostics and repairs, including parts and labor.

Can I Fix the P0382 Code Myself?

If you have automotive repair experience and the necessary tools, you can attempt to diagnose and repair the P0382 code yourself. However, if you are not confident in your abilities, it is recommended to seek professional help to avoid further complications.

About JC Landry

JC is the Senior Editor at eManualOnline.com, GarageSpot.com, and Drive-My.com, as well as the Webmaster of TheMechanicDoctor.com, only to name a few. He's been a certified Master Mechanic for 15 years, working for various car dealers and specialized repair shops before turning towards blogging about cars and EVs in the hope of helping the next generation of automotive technicians. He also loves cats, Johnny Cash and Subarus.

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