AutoCodes – Saab – P0380 Saab

P0380 Saab 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 Saab 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 2,383

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 25, 2021

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

What does this mean?

What are the Possible Causes of the DTC P0380 Saab?

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

How to Fix the DTC P0380 Saab?

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 Saab 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 Saab Code

1. What are the common symptoms of OBDII code P0380 in a Saab?

- Common symptoms include difficulty starting the engine, rough idle, engine misfires, decreased fuel efficiency, and the Check Engine light being illuminated.

2. What is the main cause of OBDII code P0380 in a Saab?

- The main cause of code P0380 in a Saab is a malfunction in the glow plug or heater circuit 'A', which is responsible for pre-heating the air in the combustion chamber for easier starting in cold conditions.

3. How can I diagnose the issue related to code P0380 in my Saab?

- A diagnostic scan tool can help pinpoint the issue by reading the fault codes stored in the vehicle's computer system. Additionally, checking the glow plugs, related wiring, and control module for proper functioning is essential.

4. Can I still drive my Saab with OBDII code P0380 present?

- It is not recommended to drive your Saab with code P0380 present, as it can lead to starting issues and potential engine damage if the glow plug system is not functioning correctly.

5. How can I repair OBDII code P0380 in my Saab?

- Repairing code P0380 typically involves replacing faulty glow plugs, repairing damaged wiring, or replacing the glow plug control module. It is essential to address the issue promptly to ensure proper engine performance.

6. Are there any maintenance tips to prevent OBDII code P0380 from occurring in my Saab?

- Regularly inspecting and replacing glow plugs at recommended intervals can help prevent issues related to code P0380. Keeping the glow plug system well-maintained can ensure smooth engine starting in cold weather.

7. Can extreme weather conditions affect the occurrence of OBDII code P0380 in a Saab?

- Yes, extreme cold weather can put more strain on the glow plug system, leading to an increased likelihood of code P0380 occurring. Properly functioning glow plugs are crucial for starting the engine in cold conditions.

8. Is it possible for a DIY enthusiast to fix OBDII code P0380 in a Saab?

- Depending on the individual's mechanical skills and access to tools, some DIY enthusiasts may be able to replace glow plugs or check wiring connections related to code P0380. However, complex diagnostics and repairs may require professional assistance.

9. Will resetting the Check Engine light resolve OBDII code P0380 in a Saab?

- Simply resetting the Check Engine light will not fix the underlying issue causing code P0380. It is important to diagnose the problem, address the root cause, and clear the code after completing the necessary repairs.

10. How long does it typically take to repair OBDII code P0380 in a Saab?

- The repair time for code P0380 can vary depending on the extent of the issue and the availability of parts. Simple fixes like replacing glow plugs may take a few hours, while more complex repairs involving wiring or control modules may take longer and require professional expertise.