P1475 2017 GMC Sierra Code - Particulate Matter Sensor Electrode Supply Circuit Low Voltage
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
- P1475 2017 GMC Sierra indicates Particulate Matter Sensor Electrode Supply Circuit Low Voltage.
- 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 P1475 2017 GMC Sierra 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 P1475 2017 GMC Sierra?
- 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 P1475 2017 GMC Sierra?
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 P1475 2017 GMC Sierra 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.
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Frequently Asked Questions about P1475 2017 GMC Sierra Code
What does the OBDII code P1475 mean on a 2017 GMC Sierra?
P1475 indicates a low voltage issue in the particulate matter sensor electrode supply circuit, which monitors exhaust emissions and ensures compliance with emissions standards.
What are the common symptoms of code P1475 in a 2017 GMC Sierra?
Symptoms may include the check engine light turning on, reduced engine performance, increased emissions, and occasional poor fuel efficiency.
What causes code P1475 to appear on a 2017 GMC Sierra?
Common causes include a faulty particulate matter sensor, damaged wiring or connectors in the sensor circuit, or a malfunctioning powertrain control module (PCM).
Can I drive my 2017 GMC Sierra with the P1475 code active?
While the vehicle may still be drivable, it is not recommended as the issue can lead to increased emissions and potential engine performance problems if left unresolved.
How do I diagnose the P1475 code on my 2017 GMC Sierra?
Start by inspecting the particulate matter sensor, its wiring, and connectors for visible damage. Use a multimeter to test the circuit voltage and consult a diagnostic scan tool to confirm the sensor's performance.
How do I fix the P1475 code on a 2017 GMC Sierra?
Repairs may involve replacing the particulate matter sensor, repairing or replacing damaged wiring, or reprogramming or replacing the PCM if necessary.
What tools are needed to address the P1475 code on a 2017 GMC Sierra?
You’ll need a diagnostic scan tool, a multimeter, and basic automotive tools to check and repair wiring, connectors, or the particulate matter sensor.
How much does it cost to fix code P1475 on a 2017 GMC Sierra?
Costs can vary, but replacing the particulate matter sensor typically ranges from $300 to $600, including parts and labor. Wiring repairs may cost less, while PCM replacement could exceed $1,000.
Can a dirty particulate matter sensor cause the P1475 code?
Yes, a dirty or clogged particulate matter sensor can lead to improper readings and trigger the code. Cleaning or replacing the sensor may resolve the issue.
Will clearing the P1475 code solve the problem permanently?
No, clearing the code will only temporarily remove the warning. The underlying issue must be diagnosed and repaired to prevent the code from returning.
Discuss the causes and fixes for P1475 2017 GMC Sierra OBDII Code
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