AutoCodes – Generic – P1379

P1379 Code - Fuel Injection Control Module Circuit High Voltage

Quick Answer

The Engine Control Module (ECM) has detected an incorrect voltage level at the Fuel Injection Control Module (FICM) Common causes include Faulty Fuel Injection Control Module (FICM), Fuel Injection Control Module harness is open or shorted, Fuel Injection Control Module 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: P1379 indicates Fuel Injection Control Module Circuit High Voltage.
Common causes: Common causes include Faulty Fuel Injection Control Module (FICM), Fuel Injection Control Module harness is open or shorted, Fuel Injection Control Module 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 4,940

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

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

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1379 Description

The Engine Control Module (ECM) has detected an incorrect voltage level at the Fuel Injection Control Module (FICM)

OBDII Code P1379 - Fuel Injection Control Module Circuit High Voltage - AutoCodes.com — P1379 Code - Fuel Injection Control Module Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P1379?

Faulty Fuel Injection Control Module (FICM)
Fuel Injection Control Module harness is open or shorted
Fuel Injection Control Module circuit poor electrical connection
Faulty Battery or Charging system

How to Fix the DTC P1379?

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 P1379 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 P1379 code?

Need more information on how to fix the P1379 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1379 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P1379 Ford — Fuel Injection Control Module Circuit High Voltage

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 P1379 Code

1. What are the common symptoms of OBDII code P1379 - Fuel Injection Control Module Circuit High Voltage?

- Common symptoms include engine misfires, rough idling, poor acceleration, and a decrease in fuel efficiency.

2. What are the possible causes of OBDII code P1379?

- The code P1379 can be triggered by issues such as a faulty fuel injection control module, damaged wiring or connectors, or a malfunctioning engine control unit (ECU).

3. How can I diagnose OBDII code P1379?

- Diagnosing code P1379 typically involves using an OBDII scanner to retrieve the code, performing a visual inspection of related components, and conducting tests on the fuel injection control module circuit.

4. Is it safe to continue driving with OBDII code P1379 active?

- It is not recommended to continue driving with code P1379 active, as it can lead to further damage to the engine and fuel system components.

5. How can I repair OBDII code P1379?

- Repairing code P1379 may involve replacing the fuel injection control module, repairing damaged wiring or connectors, or reprogramming the engine control unit (ECU) to resolve the high voltage issue.

6. Can a DIY enthusiast fix OBDII code P1379?

- While some aspects of diagnosing and repairing code P1379 may be attempted by DIY enthusiasts, it is recommended to seek professional help, especially when dealing with complex electrical systems.

7. What are the potential risks of ignoring OBDII code P1379?

- Ignoring code P1379 can lead to engine performance issues, increased fuel consumption, and potential damage to other engine components over time.

8. How much does it typically cost to fix OBDII code P1379?

- The cost of fixing code P1379 can vary depending on the underlying cause and the specific components that need to be replaced or repaired. It is recommended to consult a mechanic for an accurate estimate.

9. Can a disconnected or loose battery cause OBDII code P1379 to appear?

- Yes, a disconnected or loose battery connection can sometimes trigger code P1379 due to disruptions in the electrical system. It is advisable to check and ensure the battery connections are secure.

10. Will resetting the OBDII system clear code P1379 permanently?

- Resetting the OBDII system may temporarily clear code P1379, but if the underlying issue is not addressed, the code is likely to reappear. It is crucial to diagnose and fix the root cause of the problem.