AutoCodes – Chevrolet – P1474 2014 Chevrolet Silverado

P1474 2014 Chevrolet Silverado Code - Particulate Matter Sensor Electrode Supply Circuit

Quick Answer

The Particulate Matter (PM) sensor monitors the amount of the particulates (soot) in the diesel exhaust gas exiting the tailpipe. Common causes include Faulty Exhaust Particulate Matter Sensor, Exhaust Particulate Matter Sensor harness is open or shorted, Exhaust Particulate Matter Sensor circuit poor electrical connection. 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 2014 Chevrolet Silverado indicates Particulate Matter Sensor Electrode Supply Circuit.
Common causes: Common causes include Faulty Exhaust Particulate Matter Sensor, Exhaust Particulate Matter Sensor harness is open or shorted, Exhaust Particulate Matter Sensor circuit poor electrical connection.
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.

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Code Popularity 254

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Oct 01, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1474 2014 Chevrolet Silverado Description

The Particulate Matter (PM) sensor monitors the amount of the particulates (soot) in the diesel exhaust gas exiting the tailpipe. The PM sensor is similar to the heated oxygen sensor with a ceramic element but also includes an individually calibrated Sensor Control Unit (SCU). The sensing element includes comb-shaped Interdigital Electrodes (IDE), a heater and a positive temperature coefficient resistor for temperature measurement.
The operation of the PM Sensor is based on the electrical conductivity characteristic of the diesel particulate. As the exhaust gas flows over the sensing element, soot is absorbed in the combs between the electrodes, eventually creating a conductive path. When the path is formed, it generates a current based on the voltage being applied to the element. The measurement process continues until a preset current value is reached. To avoid misleading readings, the sensor performs a regeneration where the soot is cleaned off by heating up the element before the measurement phase begins. The amount of regenerations is based on vehicle strategy; when the calibrated number of regenerations is reached, the cumulative current readings are used to determine the amount of soot concentration in the exhaust gas which in turn determines the collection efficiency of the Diesel Particulate Filter (DPF).
The Diagnostic Trouble Code (DTC) will be set when the particular matter sensor control unit detects a fault in the particulate matter sensor circuitry.

OBDII Code P1474 2014 Chevrolet Silverado - Particulate Matter Sensor Electrode Supply Circuit - AutoCodes.com — P1474 2014 Chevrolet Silverado Code - Particulate Matter Sensor Electrode Supply Circuit

What does this mean?

What are the Possible Causes of the DTC P1474 2014 Chevrolet Silverado?

Faulty Exhaust Particulate Matter Sensor
Exhaust Particulate Matter Sensor harness is open or shorted
Exhaust Particulate Matter Sensor circuit poor electrical connection

How to Fix the DTC P1474 2014 Chevrolet Silverado?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1474 2014 Chevrolet Silverado code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P1474 2014 Chevrolet Silverado code?

Need more information on how to fix the P1474 2014 Chevrolet Silverado code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1474 2014 Chevrolet Silverado code diagnosed by a professional: Find a repair shop in your area

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 2014 Chevrolet Silverado Code

1. What are the common symptoms of OBDII code P1474 in a 2014 Chevrolet Silverado?

- Common symptoms include the illumination of the check engine light, reduced engine performance, and potential issues with the particulate matter sensor system.

2. What does the OBDII code P1474 indicate in a 2014 Chevrolet Silverado?

- OBDII code P1474 specifically relates to a fault in the Particulate Matter Sensor Electrode Supply Circuit in a 2014 Chevrolet Silverado.

3. What are some possible causes of OBDII code P1474 in a 2014 Chevrolet Silverado?

- Possible causes include a faulty particulate matter sensor, damaged wiring or connectors in the electrode supply circuit, or issues with the sensor's power supply.

4. How can I diagnose the Particulate Matter Sensor Electrode Supply Circuit issue triggering code P1474 in my 2014 Chevrolet Silverado?

- Diagnosing the issue may involve visually inspecting sensor wiring and connectors, testing the sensor's resistance, and checking the power supply to the sensor.

5. Can I still drive my 2014 Chevrolet Silverado with OBDII code P1474 active?

- It is generally not recommended to drive the vehicle with an active fault code like P1474, as it can lead to further damage and potential performance issues.

6. How can I repair OBDII code P1474 related to the Particulate Matter Sensor Electrode Supply Circuit in my 2014 Chevrolet Silverado?

- Repairing the issue may involve replacing the faulty sensor, repairing damaged wiring or connectors, or addressing any power supply issues to the sensor.

7. Will resetting the OBDII code P1474 in my 2014 Chevrolet Silverado make the issue go away?

- Simply resetting the code without addressing the underlying problem will not fix the issue. It's crucial to diagnose and repair the root cause of the fault code.

8. Can a DIY enthusiast fix OBDII code P1474 in a 2014 Chevrolet Silverado?

- Depending on your skill level and access to tools, some DIY enthusiasts may be able to tackle the repair associated with OBDII code P1474, but it's recommended to consult a professional if unsure.

9. How much does it cost to repair OBDII code P1474 in a 2014 Chevrolet Silverado at a dealership or mechanic?

- Repair costs for OBDII code P1474 can vary based on the specific issue, but it's advisable to get estimates from dealerships or mechanics for an accurate idea of the expenses involved.

10. Are there any recalls or technical service bulletins related to OBDII code P1474 in the 2014 Chevrolet Silverado?

- It's advisable to check with Chevrolet dealerships or online resources for any potential recalls or technical service bulletins related to OBDII code P1474 in the 2014 Silverado model.