P0699 2014 GMC Sierra Code - 5V Reference 3 Circuit High Voltage
Quick Answer
The P0699 diagnostic trouble code (DTC) for a 2014 GMC Sierra indicates that the 5V reference 3 circuit is registering a high voltage. Common causes include Faulty Sensor: A malfunctioning sensor connected to the 5V reference 3 circuit can cause the voltage to read higher than normal, Wiring Issues: Damaged or corroded wiring leading to the sensor can disrupt the voltage readings, Connector Problems: Loose or damaged connectors can also result in high voltage readings on 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 2014 GMC Sierra indicates 5V Reference 3 Circuit High Voltage.
- Common causes
- Common causes include Faulty Sensor: A malfunctioning sensor connected to the 5V reference 3 circuit can cause the voltage to read higher than normal, Wiring Issues: Damaged or corroded wiring leading to the sensor can disrupt the voltage readings, Connector Problems: Loose or damaged connectors can also result in high voltage readings on 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 2014 GMC Sierra Description
The P0699 diagnostic trouble code (DTC) for a 2014 GMC Sierra indicates that the 5V reference 3 circuit is registering a high voltage. This 5V reference voltage is crucial for various sensors and components within the vehicle's electronic control system to function properly. When the voltage on this circuit is too high, it can lead to erratic behavior in the vehicle's systems, potentially causing drivability issues and affecting overall performance.
Common Causes of P0699 2014 GMC Sierra
- Faulty Sensor: A malfunctioning sensor connected to the 5V reference 3 circuit can cause the voltage to read higher than normal.
- Wiring Issues: Damaged or corroded wiring leading to the sensor can disrupt the voltage readings.
- Connector Problems: Loose or damaged connectors can also result in high voltage readings on the circuit.
- Short Circuits: Short circuits in the wiring can cause the voltage to spike, triggering the P0699 code.
Symptoms of P0699 2014 GMC Sierra
- Check Engine Light: The most common symptom associated with this code is the illumination of the check engine light on the dashboard.
- Erratic Engine Performance: The vehicle may experience rough idling, stalling, or hesitation during acceleration due to the incorrect voltage readings.
- Electrical Issues: Malfunctions in various electrical components such as power windows, door locks, or the radio may occur.
- Inaccurate Sensor Readings: Sensors that rely on the 5V reference 3 circuit may provide incorrect data to the vehicle's computer, leading to performance issues.
How to Fix P0699 2014 GMC Sierra
- Diagnose the Issue: Use a diagnostic scanner to retrieve the trouble code and perform a thorough inspection of the 5V reference 3 circuit, including the sensor, wiring, and connectors.
- Test the Sensor: Check the sensor's functionality and resistance to determine if it is faulty and needs replacement.
- Inspect Wiring and Connectors: Look for any signs of damage, corrosion, or loose connections in the wiring and connectors. Repair or replace as needed.
- Clear the Code: After addressing the underlying issue, clear the trouble code from the vehicle's computer using the diagnostic scanner.
- Test Drive: Take the vehicle for a test drive to ensure that the issue has been resolved and that the check engine light does not reappear.
Cost to Fix P0699 2014 GMC Sierra
The cost of repairing a P0699 code on a 2014 GMC Sierra can vary depending on the specific cause of the issue. In general, the parts required for this repair, such as a new sensor or wiring harness, can range from $50 to $200. Labor costs at an auto repair shop typically range from $80 to $150 per hour, and the total repair time may vary depending on the complexity of the issue.
Tech Notes for P0699 2014 GMC Sierra
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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Frequently Asked Questions about P0699 2014 GMC Sierra Code
1. What does the OBDII code P0699 mean on a 2014 GMC Sierra?
P0699 indicates a "5V Reference 3 Circuit High Voltage" issue, meaning the reference voltage from the powertrain control module (PCM) has exceeded its expected range.
2. What are the common symptoms of a P0699 code in a 2014 GMC Sierra?
Symptoms may include the check engine light turning on, erratic engine performance, poor fuel economy, or issues with sensors relying on the 5V reference signal.
3. What causes the P0699 code to trigger in a 2014 GMC Sierra?
Possible causes include a short to voltage in the 5V reference circuit, a faulty sensor connected to the circuit, a damaged PCM, or corroded or damaged wiring and connectors.
4. Which sensors are typically associated with the 5V reference 3 circuit in a 2014 GMC Sierra?
The 5V reference 3 circuit may include sensors like the throttle position sensor (TPS), manifold absolute pressure (MAP) sensor, or others depending on the specific configuration of the vehicle.
5. How do I diagnose the P0699 code in my 2014 GMC Sierra?
Start by inspecting the wiring and connectors for damage or corrosion, test the voltage in the 5V reference circuit, and check the sensors connected to the circuit. Use a scan tool to monitor live data and pinpoint the issue.
6. Can a faulty PCM cause the P0699 code in a 2014 GMC Sierra?
Yes, a malfunctioning PCM can cause the P0699 code if it fails to regulate the 5V reference signal properly, though this is less common than wiring or sensor issues.
7. How do I fix the P0699 code in a 2014 GMC Sierra?
Repairs may include fixing or replacing damaged wiring, replacing a faulty sensor, or, in rare cases, replacing the PCM if it is verified to be the root cause.
8. Is it safe to drive my 2014 GMC Sierra with a P0699 code?
While the vehicle may still be drivable, continuing to drive with this code can lead to poor performance, further damage to components, or safety risks. Prompt diagnosis and repair are recommended.
9. How much does it cost to repair the P0699 code on a 2014 GMC Sierra?
Repair costs vary depending on the root cause. Replacing wiring or connectors may cost under $100, while replacing a sensor or PCM can range from $200 to $1,000 or more, including labor.
10. Can I clear the P0699 code without fixing the issue on my 2014 GMC Sierra?
Clearing the code with a scan tool will remove the check engine light temporarily, but the code will likely return if the underlying issue is not resolved.
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