AutoCodes – Chevrolet – P0699 2016 Chevrolet Silverado

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

Quick Answer

The Engine Control Module (ECM) has four (4) internal 5 Volt reference circuits (Some models have two (2) internal 5 Volt reference circuits). Common causes include Faulty Sensor on 5 Volt circuit, Sensor on 5 Volt circuit harness is open or shorted, Sensor on 5 Volt 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: P0699 2016 Chevrolet Silverado indicates 5V Reference 3 Circuit High Voltage.
Common causes: Common causes include Faulty Sensor on 5 Volt circuit, Sensor on 5 Volt circuit harness is open or shorted, Sensor on 5 Volt 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.

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Code Popularity 228

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jul 17, 2022

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0699 2016 Chevrolet Silverado Description

The Engine Control Module (ECM) has four (4) internal 5 Volt reference circuits (Some models have two (2) internal 5 Volt reference circuits). Each internal reference circuit provides external 5 Volt reference circuits for more than one sensor. A short to ground or short to voltage on one external 5 Volt reference circuit can affect all the components connected to the same internal 5 Volt reference circuit. The Diagnostic Trouble Code (DTC) will be set when the ECM detects a higher than the expected voltage on any of the 5 Volt reference circuits for greater than 0.5 s.

OBDII Code P0699 2016 Chevrolet Silverado - 5V Reference 3 Circuit High Voltage - AutoCodes.com — P0699 2016 Chevrolet Silverado Code - 5V Reference 3 Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P0699 2016 Chevrolet Silverado?

Faulty Sensor on 5 Volt circuit
Sensor on 5 Volt circuit harness is open or shorted
Sensor on 5 Volt circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC P0699 2016 Chevrolet Silverado?

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 does this mean?

Code Tech Notes

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

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0699 2016 Chevrolet Silverado 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.

Need more information about the P0699 2016 Chevrolet Silverado code?

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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.