P1248 GMC 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 GMC 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.
Code P1248 GMC Description
What are the Possible Causes of the DTC P1248 GMC?
- 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 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 P1248 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.
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Information for Specific GMC Models
- P1248 2014 GMC Sierra — Injector 1 Positive Voltage Control Circuit Shorted to Control Circuit
- P1248 2015 GMC Sierra — Injector 1 Positive Voltage Control Circuit Shorted to Control Circuit
- P1248 2016 GMC Sierra — Injector 1 Positive Voltage Control Circuit Shorted to Control Circuit
- P1248 2017 GMC Sierra — Injector 1 Positive Voltage Control Circuit Shorted to Control Circuit
- P1248 2018 GMC Sierra — Injector 1 Positive Voltage Control Circuit Shorted to Control Circuit
Frequently Asked Questions about P1248 GMC Code
1. What are the common symptoms of OBDII code P1248 GMC?
The common symptoms of code P1248 GMC may include rough idling, misfiring, decreased engine performance, and illuminated Check Engine Light.
2. What causes the Injector 1 Positive Voltage Control Circuit to be shorted to the Control Circuit?
The shorting of the Injector 1 Positive Voltage Control Circuit to the Control Circuit can be caused by damaged wiring, a faulty fuel injector, or a problem with the Engine Control Module (ECM).
3. How can I diagnose the cause of OBDII code P1248 GMC?
Diagnosing code P1248 GMC involves using a diagnostic scanner to retrieve the code, inspecting the wiring harness for any visible damage, testing the fuel injector, and checking the ECM for proper functioning.
4. Can a DIYer repair OBDII code P1248 GMC?
While some experienced DIYers may be able to repair code P1248 GMC themselves by replacing a faulty fuel injector or repairing damaged wiring, it is recommended to seek professional help for accurate diagnosis and repair.
5. Are there any repair tips for fixing Injector 1 Positive Voltage Control Circuit issues?
When repairing Injector 1 Positive Voltage Control Circuit issues, it is essential to carefully inspect all wiring connections, use a multimeter to test for continuity and resistance, and follow the manufacturer's guidelines for proper repair procedures.
6. Is it safe to continue driving with OBDII code P1248 GMC?
It is not recommended to continue driving with code P1248 GMC present, as it can lead to further damage to the engine and emissions system. It is best to address the issue promptly to prevent any complications.
7. Can a faulty ECM cause OBDII code P1248 GMC to appear?
Yes, a faulty Engine Control Module (ECM) can cause code P1248 GMC to appear, as it may disrupt the communication between the fuel injector and the control circuit, leading to a short circuit fault.
8. How much does it typically cost to repair OBDII code P1248 GMC?
The cost of repairing code P1248 GMC can vary depending on the underlying cause of the issue, the extent of the damage, and the labor rates of the repair shop. It is advisable to obtain quotes from multiple mechanics for an accurate estimate.
9. Will resetting the Check Engine Light resolve OBDII code P1248 GMC?
Simply resetting the Check Engine Light will not resolve the underlying issue causing code P1248 GMC. It is important to diagnose the problem, address the root cause, and clear the code properly to prevent it from reappearing.
10. How long does it take to repair Injector 1 Positive Voltage Control Circuit issues?
The repair time for Injector 1 Positive Voltage Control Circuit issues can vary depending on the complexity of the problem, the availability of parts, and the expertise of the mechanic. In some cases, it can be resolved within a few hours, while more challenging cases may take longer to diagnose and repair.
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