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P0697 Chevrolet Code - 5 Volt Reference 3 Circuit

Quick Answer

The P0697 code for Chevrolet vehicles indicates a problem with the 5 Volt Reference 3 circuit. Common causes include Faulty 5-volt reference circuit wiring, Failed 5-volt reference sensor, Corroded or damaged connectors. 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 Chevrolet indicates 5 Volt Reference 3 Circuit.
Common causes
Common causes include Faulty 5-volt reference circuit wiring, Failed 5-volt reference sensor, Corroded or damaged connectors.
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 Aug 18, 2024
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Code P0697 Chevrolet Description

The P0697 code for Chevrolet vehicles indicates a problem with the 5 Volt Reference 3 circuit. The 5-volt reference circuit is responsible for supplying a stable 5-volt signal to various sensors and components throughout the vehicle. This signal is crucial for the proper operation of these sensors and components, as it ensures accurate and reliable data transmission to the engine control module (ECM) or powertrain control module (PCM).

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

Common Causes of P0697 Chevrolet

  1. Faulty 5-volt reference circuit wiring
  2. Failed 5-volt reference sensor
  3. Corroded or damaged connectors
  4. ECM/PCM malfunction
  5. Short circuit in the 5-volt reference circuit

Symptoms of P0697 Chevrolet

  1. Check Engine Light illuminated
  2. Engine misfires
  3. Rough idling
  4. Poor fuel efficiency
  5. Stalling

How to Fix P0697 Chevrolet

  1. Inspect the wiring and connectors of the 5-volt reference circuit for any damage or corrosion.
  2. Test the 5-volt reference sensor for proper operation using a multimeter.
  3. Check the ECM/PCM for any signs of malfunction and reprogram or replace if necessary.
  4. Repair any short circuits in the 5-volt reference circuit.
  5. Clear the code and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P0697 Chevrolet

The typical repair costs for addressing a P0697 code on a Chevrolet vehicle can range from $100 to $300, depending on the specific cause of the issue and the labor rates in your area. It's important to note that diagnosis time and labor rates can vary, so it's advisable to consult with a qualified mechanic or auto repair shop for a more accurate estimate.

What does this mean?

Tech Notes for P0697 Chevrolet

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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Information for Specific Chevrolet 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.

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