P1476 2018 Chevrolet Silverado Code - Particulate Matter Sensor Electrode Supply Circuit High 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
- P1476 2018 Chevrolet Silverado indicates Particulate Matter Sensor Electrode Supply Circuit High 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 P1476 2018 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 P1476 2018 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 P1476 2018 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 P1476 2018 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 P1476 2018 Chevrolet Silverado code?
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Frequently Asked Questions about P1476 2018 Chevrolet Silverado Code
1. What are common symptoms of OBDII code P1476 in a 2018 Chevrolet Silverado?
- Common symptoms include the check engine light coming on, reduced engine performance, and potential issues with the particulate matter sensor system.
2. What does the OBDII code P1476 "Particulate Matter Sensor Electrode Supply Circuit High Voltage" mean for a 2018 Chevrolet Silverado?
- This code indicates that the electrode supply circuit for the particulate matter sensor is detecting a high voltage condition, which can point to a problem with the sensor or its circuitry.
3. What are possible causes of OBDII code P1476 in a 2018 Chevrolet Silverado?
- Possible causes include a faulty particulate matter sensor, damaged wiring or connectors in the sensor circuit, a malfunctioning sensor power supply, or issues with the engine control module.
4. How can I diagnose the OBDII code P1476 in my 2018 Chevrolet Silverado?
- Diagnosing this code typically involves using an OBDII scanner to retrieve the code and then performing further testing on the particulate matter sensor, its wiring, and the related components to identify the root cause of the issue.
5. Can I continue driving my 2018 Chevrolet Silverado with the OBDII code P1476 present?
- It is generally not recommended to continue driving with this code active, as it may lead to further damage to the particulate matter sensor system and potentially affect the vehicle's performance.
6. How can I repair OBDII code P1476 in my 2018 Chevrolet Silverado?
- Repairing this code often involves replacing the faulty particulate matter sensor, repairing or replacing damaged wiring or connectors, or addressing any issues with the sensor power supply or engine control module.
7. Is it possible to reset the OBDII code P1476 in a 2018 Chevrolet Silverado without repairing the issue?
- While you can clear the code with an OBDII scanner, it is important to address the underlying problem causing the code to prevent it from reoccurring.
8. Are there any common mistakes to avoid when dealing with OBDII code P1476 in a 2018 Chevrolet Silverado?
- Avoiding misdiagnosis by thoroughly testing the particulate matter sensor system and its components is crucial to prevent unnecessary repairs or parts replacements.
9. Can extreme weather conditions or driving habits trigger OBDII code P1476 in a 2018 Chevrolet Silverado?
- While extreme conditions may potentially impact the sensor system, this code is usually triggered by internal faults in the sensor or its circuitry rather than external factors.
10. How can I prevent OBDII code P1476 from occurring in my 2018 Chevrolet Silverado in the future?
- Regular maintenance, including checking the sensor system during scheduled services, and avoiding harsh driving conditions can help prevent issues that may trigger this code.
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