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Engine-Codes – Chevrolet – P0697 2018 Chevrolet Silverado

P0697 2018 Chevrolet Silverado Code - 5 Volt Reference 3 Circuit

Quick Answer

The P0697 diagnostic trouble code (DTC) for a 2018 Chevrolet Silverado relates to the 5 Volt Reference 3 Circuit. Common causes include Damaged wiring or connectors in the 5-volt reference circuit, Short circuit in the wiring harness, Faulty sensor or component drawing excessive current. 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 2018 Chevrolet Silverado indicates 5 Volt Reference 3 Circuit.
Common causes
Common causes include Damaged wiring or connectors in the 5-volt reference circuit, Short circuit in the wiring harness, Faulty sensor or component drawing excessive current.
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 15, 2024
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Code P0697 2018 Chevrolet Silverado Description

The P0697 diagnostic trouble code (DTC) for a 2018 Chevrolet Silverado relates to the 5 Volt Reference 3 Circuit. This code indicates that there is a malfunction in the circuit responsible for providing a 5-volt reference signal to various sensors and components in the vehicle. The 5-volt reference signal is crucial for the proper operation of sensors such as the throttle position sensor, manifold absolute pressure sensor, and others.

OBDII Code P0697 2018 Chevrolet Silverado - 5 Volt Reference 3 Circuit
P0697 2018 Chevrolet Silverado Code - 5 Volt Reference 3 Circuit

Common Causes of P0697 2018 Chevrolet Silverado

  1. Damaged wiring or connectors in the 5-volt reference circuit
  2. Short circuit in the wiring harness
  3. Faulty sensor or component drawing excessive current
  4. Issues with the powertrain control module (PCM)

Symptoms of P0697 2018 Chevrolet Silverado

  1. Engine misfires or rough idling
  2. Loss of power or acceleration
  3. Illumination of the Check Engine Light
  4. Stalling or difficulty starting the vehicle

How to Fix P0697 2018 Chevrolet Silverado

  1. Begin by conducting a visual inspection of the wiring and connectors related to the 5-volt reference circuit. Look for any signs of damage, corrosion, or loose connections.
  2. Use a multimeter to test the voltage output of the 5-volt reference circuit at various points to identify any abnormalities.
  3. Inspect and test the sensors and components that receive the 5-volt reference signal to determine if any are drawing excessive current or causing a short circuit.
  4. If no issues are found with the wiring, connectors, sensors, or components, the problem may lie with the PCM. In this case, the PCM may need to be reprogrammed or replaced.

Cost to Fix P0697 2018 Chevrolet Silverado

The cost of repairing a P0697 code on a 2018 Chevrolet Silverado can vary depending on the specific cause of the issue. In general, the cost of parts for this repair can range from $50 to $200, while labor costs can range from $100 to $300. Overall, the total repair cost could be anywhere from $150 to $500. It's important to note that these are rough estimates, and actual costs may vary based on factors such as location, labor rates, and the extent of the repair needed. It's recommended to consult with a qualified mechanic or repair shop for a more accurate cost estimate.

What does this mean?

Tech Notes for P0697 2018 Chevrolet Silverado

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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