P1475 2016 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 2016 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 2016 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 2016 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 2016 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 2016 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 2016 GMC Sierra Code
1. What does the OBDII code P1475 mean on a 2016 GMC Sierra?
P1475 indicates a low voltage issue in the particulate matter sensor electrode supply circuit, which monitors soot levels in the exhaust system.
2. What are the common symptoms of code P1475 in a 2016 GMC Sierra?
Common symptoms include the check engine light turning on, reduced fuel efficiency, poor engine performance, and possibly increased exhaust emissions.
3. What causes the P1475 code to appear?
The code can be triggered by a faulty particulate matter sensor, damaged wiring or connectors, a malfunctioning power supply to the sensor, or excessive soot buildup in the exhaust system.
4. Can a clogged diesel particulate filter (DPF) cause the P1475 code?
Yes, a clogged DPF can lead to issues with the particulate matter sensor and potentially trigger the P1475 code.
5. How can I diagnose a P1475 code on my GMC Sierra?
Start by inspecting the wiring and connectors for damage or corrosion, testing the sensor's voltage with a multimeter, and checking for excessive soot buildup in the exhaust system.
6. Is it safe to drive with the P1475 code on my 2016 GMC Sierra?
While the vehicle may still be drivable, ignoring the code can lead to worsening engine performance, higher emissions, and potential damage to the exhaust system.
7. How is the P1475 code typically fixed?
Repairs may involve replacing the particulate matter sensor, repairing damaged wiring, cleaning the exhaust system, or addressing issues with the sensor's power supply.
8. Will clearing the P1475 code solve the problem?
Clearing the code without addressing the underlying issue will only provide a temporary fix, and the code is likely to return.
9. How much does it cost to repair a P1475 code on a GMC Sierra?
Repair costs can vary depending on the exact issue but typically range from $200 to $600, with sensor replacement being the most expensive component.
10. Can a software update resolve the P1475 code?
In some cases, a software update from GMC may address sensor calibration issues, but this is not a guaranteed fix for all instances of the code.
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