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Engine-Codes – GMC – P1474 GMC

P1474 GMC Code - Particulate Matter Sensor Electrode Supply Circuit

Quick Answer

The P1474 GMC diagnostic trouble code (DTC) refers to an issue with the Particulate Matter Sensor Electrode Supply Circuit. Common causes include Faulty particulate matter sensor, Short circuit in the sensor electrode supply circuit, Open circuit in the sensor electrode supply circuit. 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 GMC indicates Particulate Matter Sensor Electrode Supply Circuit.
Common causes
Common causes include Faulty particulate matter sensor, Short circuit in the sensor electrode supply circuit, Open circuit in the sensor electrode supply circuit.
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 08, 2024
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Code P1474 GMC Description

The P1474 GMC diagnostic trouble code (DTC) refers to an issue with the Particulate Matter Sensor Electrode Supply Circuit. This sensor plays a crucial role in monitoring the amount of particulate matter in the exhaust system of the vehicle, specifically in diesel engines. Particulate matter refers to tiny particles that are emitted during the combustion process, which can be harmful to the environment and pose health risks to humans.

OBDII Code P1474 GMC - Particulate Matter Sensor Electrode Supply Circuit
P1474 GMC Code - Particulate Matter Sensor Electrode Supply Circuit

Common Causes of P1474 GMC

  1. Faulty particulate matter sensor
  2. Short circuit in the sensor electrode supply circuit
  3. Open circuit in the sensor electrode supply circuit
  4. Wiring issues
  5. Power supply problems

Symptoms of P1474 GMC

  1. Check Engine Light illuminated
  2. Decreased fuel efficiency
  3. Increased emissions
  4. Engine performance issues
  5. Failed emissions test

How to Fix P1474 GMC

  1. Begin by confirming the presence of the P1474 code using an OBD-II scanner.
  2. Inspect the sensor electrode supply circuit for any visible damage or loose connections.
  3. Test the particulate matter sensor to determine if it is functioning properly.
  4. Repair or replace any damaged wiring or components in the sensor electrode supply circuit.
  5. Clear the code and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P1474 GMC

The typical repair costs for addressing a P1474 GMC code can vary depending on the specific cause of the issue and the extent of the repairs needed. In general, parts for this repair may range from $100 to $300, while labor costs can add an additional $100 to $200. Overall, the total repair bill for resolving this issue could fall in the range of $200 to $500. 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 labor rates of the auto repair shop.

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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 P1474 GMC Code

1. What are common symptoms of OBDII code P1474 GMC?

The common symptoms of OBDII code P1474 GMC include poor engine performance, decreased fuel efficiency, and the illumination of the check engine light.

2. What does OBDII code P1474 GMC indicate?

OBDII code P1474 GMC indicates an issue with the Particulate Matter Sensor Electrode Supply Circuit.

3. What are possible causes of OBDII code P1474 GMC?

Possible causes of OBDII code P1474 GMC include a faulty particulate matter sensor, damaged wiring or connectors in the electrode supply circuit, or a problem with the powertrain control module.

4. How can I diagnose the Particulate Matter Sensor Electrode Supply Circuit issue?

Diagnosing the Particulate Matter Sensor Electrode Supply Circuit issue involves using an OBDII scanner to retrieve the specific fault code, inspecting the sensor and its connections for damage, and testing the circuit for continuity.

5. Can I drive my vehicle with OBDII code P1474 GMC?

It is not recommended to drive your vehicle with OBDII code P1474 GMC as it can lead to further damage and potential safety issues. It is best to address the underlying problem promptly.

6. How can I repair OBDII code P1474 GMC?

Repairing OBDII code P1474 GMC may involve replacing the faulty particulate matter sensor, repairing or replacing damaged wiring or connectors, or reprogramming the powertrain control module.

7. Will OBDII code P1474 GMC cause emissions issues?

Yes, OBDII code P1474 GMC can cause emissions issues due to improper functioning of the Particulate Matter Sensor Electrode Supply Circuit, which may affect the vehicle's emissions control system.

8. How much does it cost to fix OBDII code P1474 GMC?

The cost to fix OBDII code P1474 GMC can vary depending on the specific cause of the issue, the extent of the repairs needed, and labor costs. It is advisable to consult a professional mechanic for an accurate estimate.

9. Can a DIY enthusiast fix OBDII code P1474 GMC?

While some aspects of diagnosing and repairing OBDII code P1474 GMC can be tackled by a DIY enthusiast with the right tools and knowledge, it is recommended to seek assistance from a qualified mechanic for proper diagnosis and repair to ensure the issue is resolved effectively.

10. How can I prevent OBDII code P1474 GMC from recurring?

To prevent OBDII code P1474 GMC from recurring, it is essential to perform regular maintenance on your vehicle, address any warning lights promptly, and follow the manufacturer's recommended service schedule for optimal performance of the particulate matter sensor and related components.

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