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P1474 2016 Chevrolet Silverado Code - Particulate Matter Sensor Electrode Supply Circuit

Quick Answer

The P1474 diagnostic trouble code (DTC) in a 2016 Chevrolet Silverado refers to an issue with the Particulate Matter Sensor Electrode Supply Circuit. Common causes include Faulty Particulate Matter Sensor: The sensor itself may be malfunctioning, leading to issues with the electrode supply circuit, Wiring Issues: Damaged or corroded wiring connections can disrupt the flow of power to the sensor, Sensor Power Supply Problem: A problem with the power supply to the sensor can trigger the P1474 code. 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
P1474 2016 Chevrolet Silverado indicates Particulate Matter Sensor Electrode Supply Circuit.
Common causes
Common causes include Faulty Particulate Matter Sensor: The sensor itself may be malfunctioning, leading to issues with the electrode supply circuit, Wiring Issues: Damaged or corroded wiring connections can disrupt the flow of power to the sensor, Sensor Power Supply Problem: A problem with the power supply to the sensor can trigger the P1474 code.
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 17, 2024
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Code P1474 2016 Chevrolet Silverado Description

The P1474 diagnostic trouble code (DTC) in a 2016 Chevrolet Silverado refers to an issue with the Particulate Matter Sensor Electrode Supply Circuit. This sensor is a crucial component of the vehicle's emissions control system, specifically designed to monitor the levels of particulate matter in the exhaust gases. The electrode supply circuit is responsible for providing the necessary power to the sensor for accurate readings.

OBDII Code P1474 2016 Chevrolet Silverado - Particulate Matter Sensor Electrode Supply Circuit
P1474 2016 Chevrolet Silverado Code - Particulate Matter Sensor Electrode Supply Circuit

Common Causes of P1474 2016 Chevrolet Silverado

  1. Faulty Particulate Matter Sensor: The sensor itself may be malfunctioning, leading to issues with the electrode supply circuit.
  2. Wiring Issues: Damaged or corroded wiring connections can disrupt the flow of power to the sensor.
  3. Sensor Power Supply Problem: A problem with the power supply to the sensor can trigger the P1474 code.
  4. ECM Malfunction: A malfunction in the engine control module (ECM) can also cause issues with the electrode supply circuit.

Symptoms of P1474 2016 Chevrolet Silverado

  1. Check Engine Light: The most common symptom associated with the P1474 code is the illumination of the check engine light on the vehicle's dashboard.
  2. Reduced Engine Performance: The vehicle may experience a decrease in power and acceleration due to the malfunctioning particulate matter sensor.
  3. Increased Emissions: Higher levels of emissions may be detected during emissions testing or visible from the vehicle's exhaust.
  4. Rough Idle: The engine may idle roughly or inconsistently due to the inaccurate readings from the sensor.

How to Fix P1474 2016 Chevrolet Silverado

  1. Diagnose the Issue: Use a diagnostic scanner to retrieve the trouble codes and pinpoint the exact cause of the problem.
  2. Inspect Wiring: Check the wiring connections to the particulate matter sensor for any damage or corrosion and repair as needed.
  3. Test Sensor: Test the functionality of the sensor itself to determine if it needs to be replaced.
  4. Check Power Supply: Verify that the power supply to the sensor is functioning correctly and repair any issues with the supply.
  5. Clear Codes: Once the repairs are completed, clear the trouble codes and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P1474 2016 Chevrolet Silverado

The typical repair costs for addressing the P1474 code in a 2016 Chevrolet Silverado can vary depending on the specific cause of the issue. On average, the cost of parts for this repair can range from $100 to $300, while labor costs can range from $100 to $200. However, it's important to note that these are rough estimates, and actual costs may vary based on factors such as location, vehicle make and model, and the rates of the auto repair shop. It's recommended to consult with a professional mechanic for a more accurate cost estimate based on the specific circumstances. Labor rates at auto repair shops typically range from $80 to $150 per hour, but rates may be higher in metropolitan areas or at dealerships, and lower at independent shops.

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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 P1474 2016 Chevrolet Silverado Code

1. What does the OBDII code P1474 mean on a 2016 Chevrolet Silverado?

P1474 indicates an issue with the Particulate Matter (PM) Sensor Electrode Supply Circuit, which monitors soot levels in the exhaust system.

2. What are the common symptoms of a P1474 code?

Symptoms may include an illuminated check engine light, reduced engine performance, increased emissions, and possible regeneration issues in the diesel particulate filter (DPF).

3. What causes the P1474 code to appear?

Common causes include a faulty particulate matter sensor, damaged wiring or connectors, a blown fuse, or an issue with the power or ground supply to the sensor.

4. Can I drive my 2016 Chevrolet Silverado with a P1474 code?

Driving with this code is not recommended as it can lead to increased emissions, reduced fuel efficiency, and potential damage to the diesel particulate filter.

5. How do you diagnose a P1474 code?

Diagnosis typically involves checking the PM sensor for damage, testing the wiring and connections for continuity, and inspecting the power and ground supply to the sensor.

6. What repairs are needed to fix a P1474 code?

Repairs may include replacing the particulate matter sensor, repairing or replacing damaged wiring or connectors, or addressing a power supply issue.

7. How much does it cost to fix a P1474 code on a 2016 Chevrolet Silverado?

The repair cost varies depending on the issue, but replacing the PM sensor can cost $300–$600, while wiring repairs may be less expensive.

8. Can a dirty diesel particulate filter cause the P1474 code?

A clogged DPF itself doesn’t directly cause this code, but it can contribute to PM sensor issues if excessive soot buildup occurs.

9. How do I prevent a P1474 code from recurring?

Regular maintenance, timely DPF cleaning or regeneration, and inspecting the PM sensor wiring and connections can help prevent this code.

10. Does the P1474 code require reprogramming the ECU after repairs?

In most cases, reprogramming is not required, but clearing the code with an OBDII scanner and verifying the repair is essential.

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