P142F Buick Code - Particulate Matter Sensor Control Module Temperature Sensor 2 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
- P142F Buick indicates Particulate Matter Sensor Control Module Temperature Sensor 2 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 P142F Buick 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) when the Particular Matter Sensor Control Unit detects an internal electrical fault or an over-temperature condition on one of the internal temperature sensors.
What are the Possible Causes of the DTC P142F Buick?
- 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 P142F Buick?
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 P142F Buick 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 P142F Buick Code
What does the OBDII code P142F indicate for a Buick?
The OBDII code P142F indicates that the Particulate Matter Sensor Control Module Temperature Sensor 2 is reporting a high voltage condition, which can affect the vehicle’s emissions system.
What are common symptoms of the P142F code?
Common symptoms include illuminated check engine light, reduced engine performance, increased emissions, and possible issues with fuel efficiency.
What could cause the P142F code to trigger?
Causes may include a faulty temperature sensor, wiring issues such as short circuits or corrosion, or a malfunctioning particulate matter sensor.
Can I drive my Buick with the P142F code?
While it may be possible to drive with this code, it is not recommended as it can lead to increased emissions and potential engine performance issues. It's best to address it promptly.
How do I diagnose the P142F code?
To diagnose the P142F code, use an OBDII scanner to confirm the code, visually inspect the wiring and connectors for damage, and test the temperature sensor for proper operation.
What are some common repair solutions for the P142F code?
Repairs may include replacing the faulty temperature sensor, repairing any damaged wiring or connectors, or replacing the particulate matter sensor if it is malfunctioning.
Is it necessary to reset the check engine light after repairs?
Yes, after addressing the issue related to the P142F code, it is necessary to clear the code using an OBDII scanner to reset the check engine light.
Will clearing the code fix the problem?
Clearing the code will not fix the underlying issue; it only resets the check engine light. The root cause must be diagnosed and repaired to prevent the code from reappearing.
How much does it typically cost to fix the P142F code?
Repair costs can vary widely depending on the specific issue but can range from $100 to $500, including parts and labor, depending on whether it’s a simple sensor replacement or more complex wiring repairs.
Discuss the causes and fixes for P142F Buick OBDII Code
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