P142C Chevrolet Code - Particulate Matter Sensor Control Module Temperature Sensor 1 Low 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
- P142C Chevrolet indicates Particulate Matter Sensor Control Module Temperature Sensor 1 Low 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 P142C 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 P142C 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 P142C 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 P142C 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 P142C Chevrolet Code
1. What are the common symptoms of OBDII code P142C in a Chevrolet related to the Particulate Matter Sensor Control Module Temperature Sensor 1 Low Voltage?
- Common symptoms include poor engine performance, reduced fuel efficiency, and the illumination of the check engine light.
2. What can cause the Particulate Matter Sensor Control Module Temperature Sensor 1 Low Voltage error code P142C in a Chevrolet?
- Possible causes may include a faulty temperature sensor, damaged wiring or connectors, a malfunctioning control module, or issues with the exhaust system.
3. How serious is the P142C error code related to the Particulate Matter Sensor Control Module Temperature Sensor 1 Low Voltage in a Chevrolet?
- While the vehicle may still be operable with this code, it is important to address it promptly to prevent potential damage to the engine and emissions system.
4. How can I diagnose the Particulate Matter Sensor Control Module Temperature Sensor 1 Low Voltage issue in my Chevrolet triggering code P142C?
- A thorough inspection of the sensor, wiring, and connections, as well as using an OBDII scanner to read and clear the code, can help diagnose the problem.
5. Can I repair the P142C error code related to the Particulate Matter Sensor Control Module Temperature Sensor 1 Low Voltage in my Chevrolet myself?
- Depending on your level of automotive expertise, you may be able to address this issue by replacing the faulty sensor or repairing damaged wiring. However, professional assistance is recommended for complex repairs.
6. Are there any temporary fixes or workarounds for the Particulate Matter Sensor Control Module Temperature Sensor 1 Low Voltage error code P142C in a Chevrolet?
- It is not recommended to implement temporary fixes for this code, as addressing the root cause is crucial for maintaining the vehicle's performance and emissions standards.
7. How much does it typically cost to repair the Particulate Matter Sensor Control Module Temperature Sensor 1 Low Voltage issue causing code P142C in a Chevrolet?
- Repair costs can vary based on the specific cause of the problem, but expenses may include parts and labor, ranging from a few hundred to over a thousand dollars.
8. What are the long-term effects of ignoring the P142C error code related to the Particulate Matter Sensor Control Module Temperature Sensor 1 Low Voltage in a Chevrolet?
- Ignoring this code can lead to increased emissions, reduced fuel efficiency, and potential damage to the engine and emissions control system over time.
9. Can a faulty Particulate Matter Sensor Control Module Temperature Sensor 1 Low Voltage trigger code P142C affect the overall performance of a Chevrolet vehicle?
- Yes, a malfunctioning sensor can impact the engine's performance, fuel efficiency, and emissions output, affecting the overall operation of the vehicle.
10. Is it safe to continue driving my Chevrolet with the P142C error code related to the Particulate Matter Sensor Control Module Temperature Sensor 1 Low Voltage illuminated?
- While the vehicle may still be operable, it is recommended to address the issue promptly to prevent potential damage and ensure optimal performance and emissions compliance.
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