AutoCodes – Dodge – P0380 Dodge

P0380 Dodge Code - Glow Plug/Heater Circuit 'A' 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: P0380 Dodge indicates Glow Plug/Heater Circuit 'A' 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 6,025

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Apr 16, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0380 Dodge 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 P0380 Dodge - Glow Plug/Heater Circuit 'A' Malfunction - AutoCodes.com — P0380 Dodge Code - Glow Plug/Heater Circuit 'A' Malfunction

What does this mean?

What are the Possible Causes of the DTC P0380 Dodge?

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

How to Fix the DTC P0380 Dodge?

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 P0380 Dodge 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.

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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 P0380 Dodge Code

1. What are common symptoms of OBDII code P0380 in a Dodge vehicle?

- Common symptoms include hard starting, rough idling, reduced engine performance, and illuminated check engine light.

2. What does the OBDII code P0380 indicating a Glow Plug/Heater Circuit 'A' Malfunction mean in a Dodge?

- This code indicates a malfunction in the circuit responsible for heating the glow plugs in the diesel engine, affecting combustion efficiency.

3. What are the possible causes of OBDII code P0380 in a Dodge?

- Possible causes include faulty glow plugs, damaged wiring or connectors in the glow plug circuit, a defective glow plug relay, or a problem with the engine control module.

4. How can I diagnose the issue causing OBDII code P0380 in my Dodge?

- Diagnose the issue by checking the glow plug resistance, testing the glow plug relay, inspecting the wiring and connectors for damage, and scanning the engine control module for related error codes.

5. Can I continue driving my Dodge with OBDII code P0380 present?

- It is not recommended to continue driving with this code present, as it can lead to starting issues and poor engine performance. Addressing the issue promptly is advisable.

6. How can I repair OBDII code P0380 in my Dodge?

- Repair may involve replacing faulty glow plugs, repairing damaged wiring or connectors, replacing the glow plug relay, or reprogramming the engine control module.

7. Are glow plug issues common in Dodge vehicles triggering OBDII code P0380?

- Glow plug issues are relatively common in diesel vehicles, including Dodge trucks, due to the high temperatures and strain on the glow plug system.

8. Can extreme weather conditions affect the occurrence of OBDII code P0380 in a Dodge?

- Yes, extreme cold weather can exacerbate glow plug issues and increase the likelihood of triggering code P0380, as the glow plugs are essential for starting a diesel engine in cold temperatures.

9. Is it necessary to reset the ECU after repairing OBDII code P0380 in a Dodge?

- Yes, it is recommended to reset the ECU (clear the error codes) after repairing the issue causing code P0380 to ensure proper relearning and functioning of the system.

10. How can regular maintenance help prevent OBDII code P0380 from appearing in my Dodge?

- Regularly inspecting and replacing glow plugs as part of the recommended maintenance schedule can help prevent the occurrence of code P0380 by ensuring the glow plug system is in good working condition.