AutoCodes – Chevrolet – P1224 Chevrolet

P1224 Chevrolet Code - Fuel Injector 1 Control Circuit Shorted

Quick Answer

The Engine Control Module (ECM) supplies voltage to each fuel injector on the injector positive voltage control circuits. Common causes include Faulty Fuel Injector 1, Fuel Injector 1 harness is open or shorted, Fuel Injector 1 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: P1224 Chevrolet indicates Fuel Injector 1 Control Circuit Shorted.
Common causes: Common causes include Faulty Fuel Injector 1, Fuel Injector 1 harness is open or shorted, Fuel Injector 1 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 3,820

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 Nov 10, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1224 Chevrolet Description

The Engine Control Module (ECM) supplies voltage to each fuel injector on the injector positive voltage control circuits. The ECM energizes each fuel injector by grounding the control circuit of that fuel injector. The ECM monitors the status of the injector positive voltage control circuits and the fuel injector control circuits. When a fuel injector circuit condition is detected by the ECM, the affected fuel injectors will be disabled and may disable the affected group of fuel injectors. The Diagnostic Trouble Code (DTC) will set when the ECM injector output driver detects an incorrect current on a fuel injector circuit.

OBDII Code P1224 Chevrolet - Fuel Injector 1 Control Circuit Shorted - AutoCodes.com — P1224 Chevrolet Code - Fuel Injector 1 Control Circuit Shorted

What does this mean?

What are the Possible Causes of the DTC P1224 Chevrolet?

Faulty Fuel Injector 1
Fuel Injector 1 harness is open or shorted
Fuel Injector 1 circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC P1224 Chevrolet?

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 P1224 Chevrolet 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 P1224 Chevrolet code?

Need more information on how to fix the P1224 Chevrolet code? Get Access to Factory Service Manuals

Need Help with the Code?

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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 P1224 Chevrolet Code

1. What are common symptoms of OBDII code P1224 Chevrolet (Fuel Injector 1 Control Circuit Shorted)?

- Common symptoms include rough idling, misfires, decreased fuel efficiency, and the vehicle may not start.

2. What causes the OBDII code P1224 Chevrolet to trigger?

- The code is triggered when the Engine Control Module (ECM) detects a short circuit in the control circuit of fuel injector 1.

3. How can I diagnose the issue related to OBDII code P1224 Chevrolet?

- Diagnosing the problem involves checking the wiring and connectors related to fuel injector 1, testing the injector itself, and inspecting the ECM for faults.

4. Can a DIYer repair the Fuel Injector 1 Control Circuit Shorted issue?

- While some DIYers may be able to address this issue by checking and repairing wiring or connectors, complex ECM-related repairs may require professional help.

5. What are the potential risks of driving with OBDII code P1224 Chevrolet active?

- Driving with this code active can lead to engine performance issues, increased emissions, and potential damage to the fuel injector or ECM.

6. How much does it typically cost to repair OBDII code P1224 Chevrolet?

- The cost of repairing this code can vary depending on the underlying cause, but it may range from $100 to $500 or more, including parts and labor.

7. Can resetting the ECM clear the OBDII code P1224 Chevrolet?

- Resetting the ECM may temporarily clear the code, but it will return if the underlying issue causing the short circuit in the fuel injector 1 control circuit is not addressed.

8. Are there any preventative maintenance tips to avoid OBDII code P1224 Chevrolet?

- Regularly checking and maintaining the fuel injector system, keeping an eye on the vehicle's performance, and addressing any issues promptly can help prevent this code from triggering.

9. Is it safe to drive the vehicle to a repair shop with OBDII code P1224 Chevrolet active?

- If the vehicle is experiencing severe symptoms like misfires or difficulty starting, it is recommended to have it towed to a repair shop to prevent further damage.

10. How long does it take to repair OBDII code P1224 Chevrolet?

- The repair time can vary based on the specific cause of the code and the availability of parts, but it may take anywhere from a few hours to a full day to address the issue.