P1476 Chevrolet 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 Chevrolet 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 Chevrolet 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 Chevrolet?
- 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 Chevrolet?
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 Chevrolet 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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Information for Specific Chevrolet Models
- P1476 2014 Chevrolet Silverado — Particulate Matter Sensor Electrode Supply Circuit High Voltage
- P1476 2015 Chevrolet Silverado — Particulate Matter Sensor Electrode Supply Circuit High Voltage
- P1476 2016 Chevrolet Silverado — Particulate Matter Sensor Electrode Supply Circuit High Voltage
- P1476 2017 Chevrolet Silverado — Particulate Matter Sensor Electrode Supply Circuit High Voltage
- P1476 2018 Chevrolet Silverado — Particulate Matter Sensor Electrode Supply Circuit High Voltage
Frequently Asked Questions about P1476 Chevrolet Code
1. What are the common symptoms of OBDII code P1476 in a Chevrolet related to the Particulate Matter Sensor Electrode Supply Circuit High Voltage?
- Common symptoms include the Check Engine Light illuminating, reduced engine performance, and potential issues with the vehicle's emissions system.
2. What could cause the Particulate Matter Sensor Electrode Supply Circuit High Voltage code P1476 in a Chevrolet?
- Possible causes include a faulty particulate matter sensor, damaged wiring or connectors, a defective power supply to the sensor, or issues with the engine control module.
3. How can I diagnose the Particulate Matter Sensor Electrode Supply Circuit High Voltage code P1476 in my Chevrolet?
- Diagnosis typically involves using an OBDII scanner to retrieve the specific trouble code, inspecting the sensor and its wiring for damage, and testing the power supply to the sensor for proper voltage.
4. Are there any safety concerns associated with OBDII code P1476 related to the Particulate Matter Sensor in a Chevrolet?
- While driving with this code present may not immediately endanger safety, it is important to address the underlying issue promptly to prevent potential damage to the vehicle's emissions system.
5. Can I continue driving my Chevrolet with the OBDII code P1476, or should I address it immediately?
- It is generally recommended to address the issue promptly to prevent potential damage to the vehicle's emissions system and ensure optimal engine performance.
6. What are some repair tips for fixing the Particulate Matter Sensor Electrode Supply Circuit High Voltage code P1476 in a Chevrolet?
- Repair tips may include checking and repairing any damaged wiring or connectors, replacing the particulate matter sensor if faulty, and ensuring the power supply to the sensor is functioning correctly.
7. Is it possible to clear the OBDII code P1476 related to the Particulate Matter Sensor Electrode Supply Circuit High Voltage without fixing the underlying issue?
- Clearing the code without addressing the underlying problem may temporarily turn off the Check Engine Light, but the issue will likely reoccur until the root cause is resolved.
8. How can a professional mechanic help in diagnosing and repairing the OBDII code P1476 in a Chevrolet?
- A professional mechanic can conduct a thorough diagnostic process using specialized tools, knowledge, and experience to pinpoint the exact cause of the code and perform necessary repairs effectively.
9. Are there any recalls or technical service bulletins related to OBDII code P1476 in Chevrolet vehicles?
- It is recommended to check with Chevrolet dealerships or online databases for any recalls or technical service bulletins related to this specific OBDII code to see if there are any known issues or solutions provided by the manufacturer.
10. Can a DIY enthusiast with automotive knowledge fix the Particulate Matter Sensor Electrode Supply Circuit High Voltage code P1476 in a Chevrolet?
- Depending on the individual's skills and tools, a DIY enthusiast may be able to diagnose and repair this code. However, it is crucial to have a good understanding of automotive systems and the necessary equipment to ensure a proper fix.
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