Engine-Codes - Generic - P0382

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

- Code Popularity: 24,138 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 2/3
Table of contents
ChatAC AutoCodes.com AI Chat

What are the Possible Causes of the DTC P0382?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Faulty Glow Plug
  • Glow Plug harness is open or shorted
  • Glow Plug circuit poor electrical connection
⚠ Does your Car have Safety Recalls? → Check here

How to Fix the DTC P0382?

Check the 'Possible Causes' listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

Search for P0382 Questions and Answers: Search here →

What is the Cost to Diagnose the Code?

Labor: 1.0

The cost to diagnose the P0382 code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.

When is the Code Detected?

- The glow plugs are commanded OFF and the glow plug feedback is more than 2 volts. or
- The glow plugs are commanded on and the glow plug feedback is not between 5 volts and 6.2 volts.

What are Code Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)
  • The engine may be harder to start

What Does the P0382 Code Mean?

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.

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

Need more Information on the Code?

Need more information on how to fix the P0382 code? Get Access to Factory Service Manuals

Code P0382 Information for Specific Makes

Need Help with the Code?

Get the P0382 code diagnosed by a professional: Find a repair shop in your area