P1249 GMC Code - Injector 2 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 2, Fuel Injector 2 harness is open or shorted, Fuel Injector 2 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
- P1249 GMC indicates Injector 2 Positive Voltage Control Circuit Shorted to Control Circuit.
- Common causes
- Common causes include Faulty Fuel Injector 2, Fuel Injector 2 harness is open or shorted, Fuel Injector 2 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.
Code P1249 GMC Description
What are the Possible Causes of the DTC P1249 GMC?
- Faulty Fuel Injector 2
- Fuel Injector 2 harness is open or shorted
- Fuel Injector 2 circuit poor electrical connection
- Faulty Engine Control Module (ECM)
How to Fix the DTC P1249 GMC?
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 P1249 GMC 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 P1249 GMC code?
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Information for Specific GMC Models
- P1249 2014 GMC Sierra — Injector 2 Positive Voltage Control Circuit Shorted to Control Circuit
- P1249 2015 GMC Sierra — Injector 2 Positive Voltage Control Circuit Shorted to Control Circuit
- P1249 2016 GMC Sierra — Injector 2 Positive Voltage Control Circuit Shorted to Control Circuit
- P1249 2017 GMC Sierra — Injector 2 Positive Voltage Control Circuit Shorted to Control Circuit
- P1249 2018 GMC Sierra — Injector 2 Positive Voltage Control Circuit Shorted to Control Circuit
Frequently Asked Questions about P1249 GMC Code
1. What are the common symptoms of OBDII code P1249 on a GMC vehicle?
- Common symptoms include engine misfires, rough idling, decreased fuel efficiency, and potential stalling.
2. What causes the OBDII code P1249 on a GMC vehicle?
- The code is typically triggered by a short circuit between the control circuit and the positive voltage circuit of injector 2 in the fuel injection system.
3. How can I diagnose the Injector 2 Positive Voltage Control Circuit issue in my GMC vehicle?
- It is recommended to use a diagnostic scanner to read the OBDII codes, perform a visual inspection of the wiring harness, and test the injector 2 circuit for continuity and shorts.
4. Can a faulty injector itself cause the OBDII code P1249 on a GMC vehicle?
- Yes, a malfunctioning injector can cause the short circuit between the control circuit and positive voltage circuit, leading to the P1249 code.
5. How should I repair the Injector 2 Positive Voltage Control Circuit shorted to control circuit issue on my GMC?
- Repair involves identifying and repairing the short circuit in the wiring harness, replacing the damaged injector, and clearing the error codes with a diagnostic scanner.
6. Are there any safety precautions to consider when working on the Injector 2 Positive Voltage Control Circuit issue?
- It is important to disconnect the vehicle's battery before performing any electrical work to avoid potential hazards and damage to the vehicle's electrical system.
7. Can driving with the OBDII code P1249 on a GMC vehicle cause further damage?
- Continuing to drive with this issue can potentially lead to more serious problems such as engine damage or further electrical system issues, so it is best to address it promptly.
8. How much does it typically cost to repair the Injector 2 Positive Voltage Control Circuit issue on a GMC vehicle?
- The cost of repair can vary depending on the extent of the damage, but it may range from $200 to $500 for parts and labor at a repair shop.
9. Is it possible to reset the OBDII code P1249 on a GMC vehicle without fixing the underlying issue?
- While it is possible to clear the error code temporarily, it will likely reappear until the root cause of the problem is addressed and repaired.
10. Can a DIY enthusiast with basic automotive knowledge repair the Injector 2 Positive Voltage Control Circuit issue in a GMC vehicle?
- Depending on your skill level, you may be able to replace the injector or repair the wiring yourself, but it is recommended to consult a professional mechanic for accurate diagnosis and repair.
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