P0699 GMC Code - 5V Reference 3 Circuit High Voltage
Quick Answer
The P0699 diagnostic trouble code (DTC) for GMC vehicles indicates that the 5V Reference 3 Circuit is experiencing high voltage. Common causes include Short circuit in the 5V Reference 3 Circuit, Faulty 5V reference voltage regulator, Wiring or connector issues in the circuit. 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
- P0699 GMC indicates 5V Reference 3 Circuit High Voltage.
- Common causes
- Common causes include Short circuit in the 5V Reference 3 Circuit, Faulty 5V reference voltage regulator, Wiring or connector issues in the circuit.
- 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 P0699 GMC Description
The P0699 diagnostic trouble code (DTC) for GMC vehicles indicates that the 5V Reference 3 Circuit is experiencing high voltage. This 5V reference voltage is crucial for various sensors and components in the vehicle's electronic control systems to function properly. When the voltage on this circuit is too high, it can lead to erratic sensor readings, malfunctions in electronic components, and potential damage to the vehicle's systems.
Common Causes of P0699 GMC
- Short circuit in the 5V Reference 3 Circuit
- Faulty 5V reference voltage regulator
- Wiring or connector issues in the circuit
- Electronic control module (ECM) malfunction
- Water or corrosion damage to the circuit
Symptoms of P0699 GMC
- Engine misfires or rough idling
- Check Engine Light illuminated
- Difficulty starting the vehicle
- Inaccurate readings from various sensors
- Poor engine performance or stalling
How to Fix P0699 GMC
- Use a diagnostic scanner to confirm the P0699 code and identify the specific component causing the high voltage issue.
- Inspect the wiring and connectors in the 5V Reference 3 Circuit for any damage, corrosion, or loose connections.
- Test the 5V reference voltage regulator to ensure it is functioning correctly and replace if necessary.
- Check the ECM for any signs of malfunction and reprogram or replace as needed.
- Clear the DTC and perform a test drive to verify that the issue has been resolved.
Cost to Fix P0699 GMC
The typical repair costs for addressing a P0699 code in a GMC vehicle can range from $100 to $500, depending on the specific cause of the high voltage issue and any parts that may need to be replaced. This estimate includes both parts and labor. It's important to note that diagnosis time and labor rates at auto repair shops can vary, so it's advisable to check with local shops for a more accurate estimate.
Tech Notes for P0699 GMC
The 5 Volt reference 3 circuit provides 5 Volt to the following sensors: (Some models may have different sensors, please consult the factory service manual for the list of sensors for your model and year)
- Accelerator pedal position sensor 2
- Manifold absolute pressure sensor
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Information for Specific GMC Models
- P0699 2014 GMC Sierra — 5V Reference 3 Circuit High Voltage
- P0699 2015 GMC Sierra — 5V Reference 3 Circuit High Voltage
- P0699 2016 GMC Sierra — 5V Reference 3 Circuit High Voltage
- P0699 2017 GMC Sierra — 5V Reference 3 Circuit High Voltage
- P0699 2018 GMC Sierra — 5V Reference 3 Circuit High Voltage
Frequently Asked Questions about P0699 GMC Code
1. What are the common symptoms of OBDII code P0699 GMC (5V Reference 3 Circuit High Voltage)?
The common symptoms include illuminated Check Engine Light, engine stalling, rough idling, and issues with the vehicle's electrical components.
2. What are the possible causes of OBDII code P0699 GMC?
Possible causes of this code include a faulty 5V reference circuit, damaged wiring or connectors in the circuit, a malfunctioning Engine Control Module (ECM), or a short circuit in the system.
3. How can I diagnose OBDII code P0699 GMC?
Diagnosing this code involves using a scan tool to read the code, checking the voltage on the 5V reference circuit, inspecting wiring and connectors for damage, and testing the ECM for proper function.
4. Can I still drive my vehicle with OBDII code P0699 GMC?
It is not recommended to drive your vehicle with this code as it can cause engine performance issues and potential damage to electrical components.
5. How can I repair OBDII code P0699 GMC?
Repairing this code may involve repairing or replacing damaged wiring and connectors, replacing the ECM if necessary, and ensuring the 5V reference circuit is functioning correctly.
6. Can a DIY enthusiast fix OBDII code P0699 GMC?
While some experienced DIY enthusiasts may be able to diagnose and repair this code, it is recommended to seek professional help due to the complexity of the electrical components involved.
7. Is OBDII code P0699 GMC a serious issue?
Yes, this code should be addressed promptly as it can lead to engine performance issues, electrical component failures, and potential safety hazards.
8. How much does it cost to fix OBDII code P0699 GMC?
The cost of fixing this code can vary depending on the underlying cause, but it may range from a few hundred dollars to over a thousand dollars for parts and labor.
9. Will resetting the Check Engine Light resolve OBDII code P0699 GMC?
Resetting the Check Engine Light may temporarily turn off the light, but it will not fix the underlying issue causing the code to appear.
10. How long does it take to repair OBDII code P0699 GMC?
The repair time for this code can vary depending on the exact cause and the availability of parts, but it may take a few hours to a full day for a professional mechanic to diagnose and repair the issue.
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