P147B 2016 Chevrolet Silverado Code - Particulate Matter Sensor Shunt Circuit High Current
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
- P147B 2016 Chevrolet Silverado indicates Particulate Matter Sensor Shunt Circuit High Current.
- 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 P147B 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 P147B 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 P147B 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 P147B 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.
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Frequently Asked Questions about P147B 2016 Chevrolet Silverado Code
What does the OBDII code P147B mean for a 2016 Chevrolet Silverado?
P147B refers to a "Particulate Matter Sensor Shunt Circuit High Current," indicating an issue with the particulate matter sensor's electrical circuit.
What are the symptoms of code P147B in a 2016 Chevrolet Silverado?
Symptoms may include an illuminated check engine light, reduced fuel efficiency, decreased engine performance, or the vehicle entering limp mode.
What causes the P147B code to appear?
Common causes include a faulty particulate matter sensor, damaged wiring or connectors in the sensor circuit, or issues with the powertrain control module (PCM).
Can I drive my 2016 Chevrolet Silverado with a P147B code?
While the truck may still be drivable, ignoring this code can lead to reduced performance and potential damage to the exhaust or emissions system.
How do I diagnose the P147B code?
Start by scanning for other codes, visually inspecting the sensor and wiring for damage, and testing the circuit with a multimeter to locate high current or shorts.
What repairs are needed to fix code P147B?
Repairs may involve replacing the particulate matter sensor, repairing or replacing damaged wiring or connectors, or in rare cases, reprogramming or replacing the PCM.
How much does it cost to fix a P147B code?
The repair cost can range from $200 to $600, depending on whether you need to replace the sensor, repair wiring, or perform additional diagnostics.
Can a dirty particulate matter sensor trigger the P147B code?
No, the code specifically points to a high current issue in the sensor's circuit, not contamination of the sensor itself.
What tools are required to fix the P147B code?
You’ll need an OBDII scanner, a multimeter for electrical testing, and potentially basic tools to replace the sensor or repair wiring.
Could a software update fix the P147B code?
In rare cases, a PCM software update may resolve the issue, but this is typically only necessary after confirming no hardware faults exist.
Discuss the causes and fixes for P147B 2016 Chevrolet Silverado OBDII Code
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