P142F Chevrolet 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 Chevrolet 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 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) 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 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 P142F 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 P142F 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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Frequently Asked Questions about P142F Chevrolet Code
1. What are the common symptoms of OBDII code P142F in a Chevrolet related to the Particulate Matter Sensor Control Module Temperature Sensor 2 High Voltage?
- Common symptoms include the check engine light illuminating, reduced engine performance, and potential issues with the vehicle's emissions system.
2. What are some possible causes of the OBDII code P142F in a Chevrolet?
- Possible causes include a faulty Particulate Matter Sensor Control Module, a malfunctioning Temperature Sensor 2, damaged wiring or connectors, or issues with the exhaust system.
3. How can I diagnose the OBDII code P142F in my Chevrolet?
- Diagnosing the code typically involves using an OBDII scanner to retrieve the specific fault code, inspecting the Particulate Matter Sensor Control Module and Temperature Sensor 2, and checking for any visible signs of damage or corrosion in the system.
4. What are the repair options for OBDII code P142F in a Chevrolet?
- Repair options may include replacing the Particulate Matter Sensor Control Module, replacing the Temperature Sensor 2, repairing any damaged wiring or connectors, and clearing the fault code from the vehicle's computer.
5. How critical is it to address the OBDII code P142F in a Chevrolet promptly?
- It is important to address the code promptly to prevent potential damage to the vehicle's emissions system and ensure optimal engine performance.
6. Can I drive my Chevrolet with the OBDII code P142F present?
- It is generally not recommended to drive the vehicle with the code present, as it can lead to decreased fuel efficiency and potential emissions issues.
7. How can I prevent the OBDII code P142F from appearing in my Chevrolet?
- Regular maintenance and inspections of the emissions system, including the Particulate Matter Sensor Control Module and Temperature Sensor 2, can help prevent the code from appearing.
8. Is it possible to reset the OBDII code P142F in a Chevrolet without addressing the underlying issue?
- While it is possible to clear the fault code temporarily, it is important to address the root cause of the issue to prevent the code from reappearing.
9. Can a DIY enthusiast repair the OBDII code P142F in a Chevrolet, or is professional help necessary?
- Depending on the skill level and experience of the DIY enthusiast, some repairs related to the code may be possible. However, professional help may be necessary for more complex issues.
10. Are there any recalls or technical service bulletins related to the OBDII code P142F in Chevrolet vehicles?
- It is recommended to check with Chevrolet or a trusted automotive service provider for any recalls or technical service bulletins related to the code to ensure proper repair and maintenance.
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