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Engine-Codes – Chevrolet – P0699 2016 Chevrolet Silverado

P0699 2016 Chevrolet Silverado Code - 5V Reference 3 Circuit High Voltage

Quick Answer

The P0699 diagnostic trouble code (DTC) for a 2016 Chevrolet Silverado indicates a problem with the 5V reference 3 circuit high voltage. Common causes include Faulty 5V reference voltage regulator, Short circuit in the wiring harness, Malfunctioning sensor drawing too much voltage. 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 2016 Chevrolet Silverado 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 drawing too much voltage.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 18, 2024
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Code P0699 2016 Chevrolet Silverado Description

The P0699 diagnostic trouble code (DTC) for a 2016 Chevrolet Silverado indicates a problem with the 5V reference 3 circuit high voltage. The 5V reference circuit is crucial for various sensors and components in the vehicle to function properly. In this case, a high voltage reading suggests that there is an issue with the voltage being supplied to these sensors and components.

OBDII Code P0699 2016 Chevrolet Silverado - 5V Reference 3 Circuit High Voltage
P0699 2016 Chevrolet Silverado Code - 5V Reference 3 Circuit High Voltage

Common Causes of P0699 2016 Chevrolet Silverado

  1. Faulty 5V reference voltage regulator
  2. Short circuit in the wiring harness
  3. Malfunctioning sensor drawing too much voltage
  4. Issue with the engine control module (ECM)
  5. Corrosion or damage to the electrical connections

Symptoms of P0699 2016 Chevrolet Silverado

  1. Rough idling or engine stalling
  2. Poor acceleration or loss of power
  3. Check Engine Light illuminated on the dashboard
  4. Vehicle going into limp mode
  5. Erratic behavior in various vehicle systems

How to Fix P0699 2016 Chevrolet Silverado

  1. Begin by conducting a thorough inspection of the wiring harness and electrical connections to identify any visible damage or corrosion.
  2. Test the 5V reference voltage regulator to determine if it is functioning correctly. Replace if necessary.
  3. Check each sensor connected to the 5V reference circuit to identify any faulty components drawing too much voltage.
  4. If no issues are found with the sensors or wiring, the problem may lie with the engine control module (ECM). Consider reprogramming or replacing the ECM as needed.
  5. Clear the DTC and test drive the vehicle to ensure that the issue has been resolved.

Cost to Fix P0699 2016 Chevrolet Silverado

The typical repair costs for addressing a P0699 code on a 2016 Chevrolet Silverado can vary depending on the specific cause of the issue. In general, the cost of parts for this repair could range from $100 to $500, while labor costs could range from $100 to $300. It's important to note that these are rough estimates, and actual costs may vary based on factors such as location, vehicle make and model, and the rates charged by auto repair shops. It's advisable to contact local shops for a more accurate cost estimate. Keep in mind that diagnosis time and labor rates can also impact the final repair bill.

What does this mean?

Tech Notes for P0699 2016 Chevrolet Silverado

Disconnecting one component at a time from the affected 5 Volt reference circuit while observing the scan tool 5 Volt Reference Circuit Status parameter may help locate the fault. The scan tool parameter will change from Malfunction to OK when the source of the fault is disconnected. If all 5 Volt reference components have been disconnected and a fault is still indicated, the fault may exist in the wiring harness.



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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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0699 2016 Chevrolet Silverado Code

1. What does the OBDII code P0699 mean on a 2016 Chevrolet Silverado?

P0699 indicates a "5V Reference 3 Circuit High Voltage" issue, meaning the 5-volt reference signal for certain sensors is reading higher than expected.

2. What are the common symptoms of a P0699 code on a 2016 Chevrolet Silverado?

Symptoms may include poor engine performance, erratic transmission shifting, hard starting, reduced fuel efficiency, or illuminated check engine light.

3. What causes the P0699 code to appear?

Common causes include a short to power in the 5-volt reference circuit, a faulty sensor drawing excessive voltage, damaged wiring, or a malfunctioning Engine Control Module (ECM).

4. Which sensors are typically associated with the P0699 code?

The 5V reference circuit may be linked to sensors like the throttle position sensor (TPS), manifold absolute pressure (MAP) sensor, or other key engine sensors.

5. How do you diagnose the P0699 code on a 2016 Chevrolet Silverado?

Diagnosis involves checking the 5-volt reference circuit for short circuits, inspecting wiring and connectors for damage, and testing related sensors for proper operation using a multimeter.

6. Can a P0699 code cause drivability issues in a 2016 Chevrolet Silverado?

Yes, this code can lead to drivability problems like rough idling, hesitation, or reduced engine performance due to incorrect sensor readings.

7. Is the P0699 code safe to ignore?

No, ignoring this code can lead to more severe engine or transmission issues over time, as it may affect critical sensor data.

8. How is the P0699 code repaired?

Repairs may include fixing or replacing damaged wiring, replacing a faulty sensor, or reprogramming or replacing the ECM if necessary.

9. How much does it cost to fix a P0699 code on a 2016 Chevrolet Silverado?

Repair costs can vary but typically range from $100 to $500, depending on whether the issue involves wiring, sensors, or the ECM.

10. Can I clear the P0699 code without fixing the issue?

Clearing the code without addressing the root cause will only temporarily turn off the check engine light, as the problem will likely trigger the code again.

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