AutoCodes – Chevrolet – P1248 Chevrolet

P1248 Chevrolet Code - Injector 1 Positive Voltage Control Circuit Shorted to Control Circuit

Quick Answer

The Engine Control Module (ECM) supplies voltage to each fuel injector on the injector high voltage supply 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
P1248 Chevrolet indicates Injector 1 Positive Voltage Control Circuit Shorted to Control Circuit.
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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 7,658
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Mar 23, 2024
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Code P1248 Chevrolet Description

The Engine Control Module (ECM) supplies voltage to each fuel injector on the injector high voltage supply circuits. The ECM energizes each fuel injector by grounding the high voltage control circuit of the fuel injector. The ECM monitors the status of the injector high voltage supply circuits and the fuel injector high voltage control circuits. When a fuel injector circuit condition is detected by the ECM, the affected fuel injector(s) is disabled. The Diagnostic Trouble Code (DTC) will be set if the ECM detects the injector high control circuit is shorted to the low control circuit for greater than 2 s.
OBDII Code P1248 Chevrolet - Injector 1 Positive Voltage Control Circuit Shorted to Control Circuit - AutoCodes.com
P1248 Chevrolet Code - Injector 1 Positive Voltage Control Circuit Shorted to Control Circuit

What are the Possible Causes of the DTC P1248 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 P1248 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 P1248 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 P1248 Chevrolet code?

Need more information on how to fix the P1248 Chevrolet code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1248 Chevrolet code diagnosed by a professional: Find a repair shop in your area

Information for Specific Chevrolet Models

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 P1248 Chevrolet Code

1. What are common symptoms of OBDII code P1248 in a Chevrolet related to Injector 1 Positive Voltage Control Circuit?

- Common symptoms include rough idling, engine misfires, decreased fuel efficiency, and potential stalling while driving.

2. What are the possible causes of OBDII code P1248 Chevrolet, indicating Injector 1 Positive Voltage Control Circuit Shorted to Control Circuit?

- The code may be triggered by a short circuit in the wiring related to Injector 1, a faulty injector, or a malfunctioning Engine Control Module (ECM).

3. How can I diagnose OBDII code P1248 in a Chevrolet?

- Use a scan tool to read and interpret the code. Then, inspect the wiring harness and connectors for any visible damage, test the injector's resistance, and check the ECM for proper functioning.

4. What are the repair options for OBDII code P1248 related to Injector 1 in a Chevrolet?

- Repair options include fixing the wiring or connector issue, replacing the faulty injector, or reprogramming or replacing the ECM if necessary.

5. Is it safe to continue driving with OBDII code P1248 Chevrolet active?

- It is not recommended to drive with this code active, as it can lead to further engine damage or safety hazards. It's best to address the issue promptly.

6. Can a DIY enthusiast fix OBDII code P1248 in a Chevrolet?

- Depending on the individual's skill level and access to tools, some DIY enthusiasts may be able to address the issue by following repair guides and procedures carefully.

7. How much does it typically cost to repair OBDII code P1248 related to Injector 1 in a Chevrolet?

- Repair costs can vary based on the specific cause of the issue and labor rates in your area. It's advisable to consult with a mechanic for an accurate estimate.

8. Are there any preventive maintenance steps to avoid triggering OBDII code P1248 in a Chevrolet?

- Regularly inspecting and maintaining the fuel injection system, wiring, and ECM can help prevent issues that lead to this trouble code.

9. Can a faulty spark plug or ignition coil trigger OBDII code P1248 in a Chevrolet?

- While it's less common, a faulty spark plug or ignition coil can potentially cause misfires that may contribute to triggering this trouble code.

10. How soon should I address OBDII code P1248 Chevrolet to prevent further complications?

- It's recommended to address the issue as soon as possible to prevent potential damage to the engine and ensure optimal performance of the vehicle.

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