P1474 2016 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 2016 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.
Code P1474 2016 Chevrolet Silverado Description
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.
What are the Possible Causes of the DTC P1474 2016 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 2016 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 2016 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 2016 Chevrolet Silverado code?
Need more information on how to fix the P1474 2016 Chevrolet Silverado code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P1474 2016 Chevrolet Silverado code diagnosed by a professional: Find a repair shop in your area
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.
Discuss the causes and fixes for P1474 2016 Chevrolet Silverado OBDII Code
Code P1474 2016 Chevrolet Silverado comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
