P0699 2017 GMC Sierra Code - 5V Reference 3 Circuit High Voltage
Quick Answer
The P0699 diagnostic trouble code (DTC) for a 2017 GMC Sierra indicates that the 5V reference 3 circuit is registering a high voltage. Common causes include Faulty 5V reference voltage regulator, Short circuit in the wiring harness, Malfunctioning sensor connected to the 5V reference 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 2017 GMC Sierra indicates 5V Reference 3 Circuit High Voltage.
- Common causes
- Common causes include Faulty 5V reference voltage regulator, Short circuit in the wiring harness, Malfunctioning sensor connected to the 5V reference 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 2017 GMC Sierra Description
The P0699 diagnostic trouble code (DTC) for a 2017 GMC Sierra indicates that the 5V reference 3 circuit is registering a high voltage. The 5V reference circuit is responsible for providing a stable 5-volt power supply to various sensors and components throughout the vehicle. When this circuit detects a high voltage, it typically means that there is an issue with the voltage regulation system, which can lead to erratic sensor readings and potential performance issues.
Common Causes of P0699 2017 GMC Sierra
- Faulty 5V reference voltage regulator
- Short circuit in the wiring harness
- Malfunctioning sensor connected to the 5V reference circuit
- ECM issue
Symptoms of P0699 2017 GMC Sierra
- Check Engine Light illuminated
- Rough idling or stalling
- Poor fuel efficiency
- Hesitation during acceleration
- Inaccurate sensor readings
How to Fix P0699 2017 GMC Sierra
- Use a diagnostic scanner to retrieve the trouble code and identify the specific component causing the high voltage in the 5V reference circuit.
- Inspect the wiring harness for any signs of damage or short circuits. Repair or replace any damaged wiring.
- Test the 5V reference voltage regulator to ensure it is functioning correctly. Replace if necessary.
- Check all sensors connected to the 5V reference circuit for proper operation. Replace any faulty sensors.
- Clear the trouble code from the ECM's memory and perform a test drive to verify that the issue has been resolved.
Cost to Fix P0699 2017 GMC Sierra
The typical repair costs for addressing a P0699 code on a 2017 GMC Sierra can vary depending on the specific cause of the issue. In general, parts and labor for this repair could range from $150 to $500. It's important to note that diagnostic time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. It's advisable to check with local shops for a more accurate estimate.
Tech Notes for P0699 2017 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 2017 GMC Sierra Code
What does the OBDII code P0699 mean for a 2017 GMC Sierra?
P0699 indicates a problem with the 5V Reference 3 Circuit, specifically high voltage detected in the circuit.
What are the common symptoms of code P0699 in a 2017 GMC Sierra?
Symptoms may include an illuminated check engine light, erratic engine performance, and issues with sensors reliant on the 5V reference circuit.
What causes code P0699 in a 2017 GMC Sierra?
Common causes include a short to voltage in the 5V reference circuit, damaged wiring, a faulty sensor, or a malfunctioning powertrain control module (PCM).
Can a bad sensor cause code P0699?
Yes, a faulty sensor connected to the 5V reference circuit can cause this code by sending incorrect voltage signals.
How do you diagnose code P0699 in a 2017 GMC Sierra?
Diagnosis typically involves inspecting wiring and connectors for damage, testing the sensors connected to the 5V reference circuit, and checking the PCM for faults.
Is code P0699 serious?
While the vehicle may still be drivable, ignoring this code can lead to further electrical issues and unreliable sensor data, potentially affecting performance.
Can I fix code P0699 myself?
If you’re experienced with automotive repairs, you can inspect and replace damaged wiring or sensors. Otherwise, it’s best to seek professional assistance.
How much does it cost to repair code P0699 on a 2017 GMC Sierra?
The cost varies depending on whether it’s a wiring issue, sensor replacement, or PCM repair, typically ranging from $100 to $600.
Will clearing the code P0699 solve the problem permanently?
No, clearing the code without addressing the underlying issue will only temporarily hide the problem, and the code will likely return.
Can code P0699 affect other systems in the vehicle?
Yes, since the 5V reference circuit is linked to multiple sensors, a fault may impact systems like fuel management, emissions, or engine performance.
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