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Engine-Codes – GMC – P0697 2014 GMC Sierra

P0697 2014 GMC Sierra Code - 5 Volt Reference 3 Circuit

Quick Answer

The P0697 diagnostic trouble code (DTC) for a 2014 GMC Sierra relates to the 5 Volt Reference 3 Circuit. Common causes include Faulty 5-volt reference voltage regulator, Short circuit or open circuit in the 5 Volt Reference 3 Circuit, Corrosion or poor connections in the wiring harness. 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
P0697 2014 GMC Sierra indicates 5 Volt Reference 3 Circuit.
Common causes
Common causes include Faulty 5-volt reference voltage regulator, Short circuit or open circuit in the 5 Volt Reference 3 Circuit, Corrosion or poor connections in the wiring harness.
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 16, 2024
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Code P0697 2014 GMC Sierra Description

The P0697 diagnostic trouble code (DTC) for a 2014 GMC Sierra relates to the 5 Volt Reference 3 Circuit. This code indicates that there is a malfunction in the circuit that provides a 5-volt reference voltage to various sensors and components in the vehicle. The 5-volt reference voltage is crucial for the proper operation of sensors such as the throttle position sensor, manifold absolute pressure sensor, and others. When this circuit malfunctions, it can lead to incorrect sensor readings, which can affect the vehicle's performance and efficiency.

OBDII Code P0697 2014 GMC Sierra - 5 Volt Reference 3 Circuit
P0697 2014 GMC Sierra Code - 5 Volt Reference 3 Circuit

Common Causes of P0697 2014 GMC Sierra

  1. Faulty 5-volt reference voltage regulator
  2. Short circuit or open circuit in the 5 Volt Reference 3 Circuit
  3. Corrosion or poor connections in the wiring harness
  4. Defective sensors that are connected to the 5-volt reference circuit
  5. Issues with the ECM or PCM that affect the 5-volt reference voltage output

Symptoms of P0697 2014 GMC Sierra

  1. Check engine light illuminated
  2. Engine performance issues such as rough idling or stalling
  3. Reduced fuel efficiency
  4. Lack of power or acceleration
  5. Difficulty starting the engine

How to Fix P0697 2014 GMC Sierra

  1. Use a diagnostic scan tool to retrieve the trouble code and freeze frame data.
  2. Inspect the wiring harness for any signs of damage, corrosion, or poor connections. Repair or replace as necessary.
  3. Test the 5-volt reference voltage regulator and replace if faulty.
  4. Check the sensors connected to the 5-volt reference circuit for proper operation and replace any defective sensors.
  5. Clear the trouble code from the ECM's memory and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P0697 2014 GMC Sierra

The typical repair costs for addressing a P0697 code on a 2014 GMC Sierra can vary depending on the specific cause of the issue. Parts such as a 5-volt reference voltage regulator or sensors may cost between $50 to $200, while labor costs can range from $100 to $300. Overall, the total repair cost could be in the range of $150 to $500. It's important to note that diagnosis time and labor rates at auto repair shops can vary, so it's advisable to check with local shops for a more accurate estimate.

What does this mean?

Tech Notes for P0697 2014 GMC Sierra

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.

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