P142D Chevrolet 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 Chevrolet 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 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 P142D 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 P142D 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 P142D 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 P142D Chevrolet Code
1. What are the common symptoms of OBDII code P142D in a Chevrolet related to the Particulate Matter Sensor Control Module Temperature Sensor 1 High Voltage issue?
- Common symptoms include the check engine light being illuminated, reduced engine performance, and potential issues with the vehicle's emissions system.
2. What are some possible causes of the Particulate Matter Sensor Control Module Temperature Sensor 1 High Voltage trouble code in a Chevrolet?
- Possible causes may include a faulty temperature sensor, damaged wiring or connectors, issues with the sensor control module, or a problem with the particulate matter sensor itself.
3. How can I diagnose the Particulate Matter Sensor Control Module Temperature Sensor 1 High Voltage issue in my Chevrolet?
- Diagnosing this issue typically involves using an OBDII scanner to retrieve the specific trouble code, checking the temperature sensor and its wiring for any signs of damage, and verifying the operation of the sensor control module.
4. Can I continue driving my Chevrolet with the P142D trouble code present?
- It is generally not recommended to continue driving with this code present, as it can lead to increased emissions and potential damage to the vehicle's emissions system. It's best to address the issue promptly.
5. How can I repair the Particulate Matter Sensor Control Module Temperature Sensor 1 High Voltage problem in my Chevrolet?
- Repair options may include replacing the faulty temperature sensor, repairing damaged wiring or connectors, resetting the trouble code, or seeking assistance from a professional mechanic for further diagnosis and repair.
6. Will resetting the trouble code make it go away permanently?
- Resetting the trouble code may temporarily clear the check engine light, but if the underlying issue causing the code is not addressed, it is likely to reappear. It's important to diagnose and repair the root cause of the problem.
7. Is the Particulate Matter Sensor Control Module Temperature Sensor 1 High Voltage issue a common problem in Chevrolet vehicles?
- While this specific code may not be as common as some other OBDII trouble codes, issues with temperature sensors and emissions components can occur in Chevrolet vehicles, especially in models equipped with particulate matter sensors.
8. Can a DIY enthusiast repair the Particulate Matter Sensor Control Module Temperature Sensor 1 High Voltage problem at home?
- Depending on the specific cause of the issue, some DIY enthusiasts may be able to repair this problem at home by following repair guides, using basic tools, and having some mechanical knowledge. However, complex issues may require professional assistance.
9. Will fixing the Particulate Matter Sensor Control Module Temperature Sensor 1 High Voltage issue improve my Chevrolet's fuel efficiency?
- Resolving this issue can help ensure optimal performance and emissions control, which may indirectly contribute to improved fuel efficiency. However, the direct impact on fuel efficiency may vary depending on the vehicle's overall condition.
10. How much can I expect to pay to repair the Particulate Matter Sensor Control Module Temperature Sensor 1 High Voltage issue in a Chevrolet?
- The cost of repairs can vary depending on the specific cause of the problem, labor rates in your area, and whether you choose to address the issue yourself or seek professional help. It's recommended to obtain quotes from mechanics for an accurate estimate.
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