AutoCodes – GMC – P0698 2016 GMC Sierra

P0698 2016 GMC Sierra Code - 5V Reference 3 Circuit Low 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: P0698 2016 GMC Sierra indicates 5V Reference 3 Circuit Low 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 161

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 P0698 2016 GMC Sierra 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 lower than the expected voltage on any of the 5 Volt reference circuits for greater than 0.5 s.

OBDII Code P0698 2016 GMC Sierra - 5V Reference 3 Circuit Low Voltage - AutoCodes.com — P0698 2016 GMC Sierra Code - 5V Reference 3 Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P0698 2016 GMC Sierra?

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 P0698 2016 GMC Sierra?

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 P0698 2016 GMC Sierra 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 P0698 2016 GMC Sierra 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 P0698 2016 GMC Sierra Code

1. What are the common symptoms of OBDII code P0698 in a 2016 GMC Sierra?

The common symptoms of OBDII code P0698, which indicates a 5V Reference 3 Circuit Low Voltage issue in a 2016 GMC Sierra, include rough idling, stalling, and a decrease in engine performance.

2. What are the potential causes of OBDII code P0698 in a 2016 GMC Sierra?

The potential causes of OBDII code P0698 in a 2016 GMC Sierra can include a faulty 5V reference circuit, damaged wiring or connectors related to the circuit, or a malfunctioning Engine Control Module (ECM).

3. How can I diagnose the OBDII code P0698 in my 2016 GMC Sierra?

Diagnosing OBDII code P0698 in a 2016 GMC Sierra involves using a diagnostic scanner to retrieve the fault code, inspecting the 5V reference circuit for any visible damage, and testing the circuit components for proper voltage readings.

4. Is it safe to continue driving with OBDII code P0698 in my 2016 GMC Sierra?

It is not recommended to continue driving with OBDII code P0698 in a 2016 GMC Sierra, as it can lead to further damage to the vehicle's engine and components. It is best to address the issue promptly.

5. Can I repair OBDII code P0698 in my 2016 GMC Sierra myself?

Depending on your level of automotive expertise, you may be able to repair OBDII code P0698 in a 2016 GMC Sierra yourself. However, it is recommended to consult a professional mechanic for an accurate diagnosis and proper repair.

6. How much does it typically cost to repair OBDII code P0698 in a 2016 GMC Sierra?

The cost of repairing OBDII code P0698 in a 2016 GMC Sierra can vary depending on the specific cause of the issue. It may range from a simple wiring repair to a more complex ECM replacement, potentially costing a few hundred to over a thousand dollars.

7. Can a faulty sensor trigger OBDII code P0698 in a 2016 GMC Sierra?

While a faulty sensor may not directly trigger OBDII code P0698 in a 2016 GMC Sierra, it can contribute to issues within the 5V reference circuit, leading to a low voltage condition and the setting of the fault code.

8. How long does it typically take to repair OBDII code P0698 in a 2016 GMC Sierra?

The repair time for OBDII code P0698 in a 2016 GMC Sierra can vary based on the complexity of the issue and the availability of parts. It may take a few hours to a day for a professional mechanic to diagnose and repair the problem.

9. Can resetting the OBDII system clear out the P0698 code in a 2016 GMC Sierra?

Resetting the OBDII system may temporarily clear out the P0698 code in a 2016 GMC Sierra, but if the underlying issue causing the code is not addressed, the code is likely to reappear once the vehicle is driven and the ECM detects the fault again.