Engine-Codes.com
Engine-Codes – GMC – P0697 GMC

P0697 GMC Code - 5 Volt Reference 3 Circuit

Quick Answer

The P0697 diagnostic trouble code (DTC) in a GMC vehicle indicates an issue with the 5-volt reference circuit 3. Common causes include Damaged wiring or connectors in the 5-volt reference 3 circuit, Faulty sensor (e.g., throttle position sensor) connected to the circuit, Malfunctioning ECM/PCM. 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 GMC indicates 5 Volt Reference 3 Circuit.
Common causes
Common causes include Damaged wiring or connectors in the 5-volt reference 3 circuit, Faulty sensor (e.g., throttle position sensor) connected to the circuit, Malfunctioning ECM/PCM.
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 10, 2024
💬 Need more help? Ask Auto Expert for instant answers — it's free!
AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play

Code P0697 GMC Description

The P0697 diagnostic trouble code (DTC) in a GMC vehicle indicates an issue with the 5-volt reference circuit 3. In modern vehicles, the Engine Control Module (ECM) or Powertrain Control Module (PCM) provides 5-volt reference signals to various sensors and components within the vehicle. This specific circuit is crucial for the proper operation of sensors like the throttle position sensor, manifold absolute pressure sensor, and others.

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

Common Causes of P0697 GMC

  1. Damaged wiring or connectors in the 5-volt reference 3 circuit
  2. Faulty sensor (e.g., throttle position sensor) connected to the circuit
  3. Malfunctioning ECM/PCM
  4. Poor electrical connection or ground

Symptoms of P0697 GMC

  1. Poor acceleration or hesitation during acceleration
  2. Rough idling or stalling
  3. Difficulty starting the vehicle
  4. Check engine light illuminated on the dashboard

How to Fix P0697 GMC

  1. Perform a thorough inspection of the wiring and connectors in the 5-volt reference 3 circuit.
  2. Test the sensors connected to the circuit for proper operation.
  3. Check the ECM/PCM for any signs of malfunction and ensure it is sending the correct 5-volt reference signal.
  4. Repair or replace any damaged wiring, connectors, sensors, or the ECM/PCM as needed.
  5. Clear the DTC and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P0697 GMC

The cost of repairing the 5-volt reference 3 circuit issue can vary depending on the specific cause of the problem and the extent of the repair needed. On average, the repair cost can range from $100 to $500, including parts and labor. However, it's important to note that diagnostic time and labor rates at auto repair shops can vary, so it's advisable to check with local professionals for a more accurate estimate.

What does this mean?

Tech Notes for P0697 GMC

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

Need more information about the P0697 GMC code?

Need more information on how to fix the P0697 GMC code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0697 GMC code diagnosed by a professional: Find a repair shop in your area

Information for Specific GMC Models

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 P0697 GMC Code

No Frequently Asked Questions about P0697 GMC Code found.

Discuss the causes and fixes for P0697 GMC OBDII Code

Submit a New Comment

Code P0697 GMC comments

No comments found for this page.