P142D Buick Code - Particulate Matter Sensor Control Module Temperature Sensor 1 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
- P142D Buick indicates Particulate Matter Sensor Control Module Temperature Sensor 1 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 P142D 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 P142D 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 P142D 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 P142D 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 P142D Buick Code
1. What are common symptoms of OBDII code P142D in a Buick related to the Particulate Matter Sensor Control Module Temperature Sensor 1 High Voltage issue?
- Common symptoms include the check engine light illuminating, decreased fuel efficiency, and potential engine performance issues.
2. What are the possible causes of OBDII code P142D in a Buick related to the Particulate Matter Sensor Control Module Temperature Sensor 1 High Voltage problem?
- Possible causes may include a faulty temperature sensor, wiring issues, a malfunctioning control module, or a problem with the particulate matter sensor itself.
3. How can I diagnose the OBDII code P142D in a Buick linked to the Particulate Matter Sensor Control Module Temperature Sensor 1 High Voltage fault?
- Diagnosis typically involves using a diagnostic scanner to retrieve the trouble codes, testing the temperature sensor and related components, and checking for any wiring faults.
4. What are some repair tips for fixing OBDII code P142D in a Buick related to the Particulate Matter Sensor Control Module Temperature Sensor 1 High Voltage error?
- Repair tips may include replacing the faulty temperature sensor, repairing any damaged wiring, resetting the codes, or seeking professional help for further diagnosis and repair.
5. Can I continue driving my Buick with the OBDII code P142D related to the Particulate Matter Sensor Control Module Temperature Sensor 1 High Voltage issue?
- It is not recommended to ignore the issue and continue driving, as it can potentially lead to more severe problems and affect the vehicle's performance and emissions.
6. How much does it typically cost to repair OBDII code P142D in a Buick related to the Particulate Matter Sensor Control Module Temperature Sensor 1 High Voltage fault?
- The cost of repair can vary depending on the exact cause of the issue, but it may involve expenses for parts and labor, ranging from a few hundred to over a thousand dollars.
7. Are there any preventive measures to avoid encountering OBDII code P142D in a Buick related to the Particulate Matter Sensor Control Module Temperature Sensor 1 High Voltage issue?
- Regular maintenance, such as checking and replacing sensors as recommended by the manufacturer, can help prevent such issues. Additionally, addressing any warning lights promptly can help avoid further damage.
8. How long does it typically take to repair OBDII code P142D in a Buick related to the Particulate Matter Sensor Control Module Temperature Sensor 1 High Voltage problem?
- The repair time can vary depending on the complexity of the issue and the availability of parts, but it may take a few hours to a day for a professional technician to diagnose and fix the problem.
9. Can a DIY enthusiast with mechanical knowledge repair OBDII code P142D in a Buick related to the Particulate Matter Sensor Control Module Temperature Sensor 1 High Voltage fault?
- While some basic repairs may be possible for experienced DIY enthusiasts, dealing with OBDII codes and sensors often requires specialized tools and expertise. It is recommended to seek professional help for accurate diagnosis and repair.
10. Will resetting the OBDII code P142D in a Buick related to the Particulate Matter Sensor Control Module Temperature Sensor 1 High Voltage issue solve the problem?
- Resetting the code may temporarily turn off the check engine light, but it will not fix the underlying issue causing the fault. It is essential to diagnose and address the root cause of the problem to prevent further complications.
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