P142E Chevrolet Code - Particulate Matter Sensor Control Module Temperature Sensor 2 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
- P142E Chevrolet indicates Particulate Matter Sensor Control Module Temperature Sensor 2 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 P142E 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 P142E 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 P142E 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 P142E 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 P142E Chevrolet Code
1. What are the common symptoms of OBDII code P142E in a Chevrolet related to the Particulate Matter Sensor Control Module Temperature Sensor 2 Low Voltage issue?
- Common symptoms include poor engine performance, decreased fuel efficiency, and the illumination of the check engine light.
2. What are some possible causes of the Particulate Matter Sensor Control Module Temperature Sensor 2 Low Voltage error code P142E in a Chevrolet?
- Potential causes may include a faulty temperature sensor, wiring issues, a malfunctioning control module, or a problem with the sensor circuit.
3. How can I diagnose the Particulate Matter Sensor Control Module Temperature Sensor 2 Low Voltage problem in my Chevrolet triggering OBDII code P142E?
- Diagnosis typically involves using an OBDII scanner to retrieve the specific fault code, checking the temperature sensor for proper operation, inspecting wiring for damage, and testing the control module.
4. What are some repair tips for addressing the P142E error code related to the Particulate Matter Sensor Control Module Temperature Sensor 2 Low Voltage in a Chevrolet?
- Repair tips may include replacing the faulty temperature sensor, repairing any damaged wiring, resetting the fault code with the scanner, or seeking professional assistance for complex issues.
5. Can I continue driving my Chevrolet with the Particulate Matter Sensor Control Module Temperature Sensor 2 Low Voltage issue causing OBDII code P142E?
- It is not recommended to drive your vehicle with this issue as it can lead to potential engine damage or further problems with emissions control.
6. How critical is it to address the Particulate Matter Sensor Control Module Temperature Sensor 2 Low Voltage problem triggering code P142E in my Chevrolet promptly?
- It is important to address this issue promptly to prevent potential damage to the engine, ensure proper emissions control, and maintain optimal vehicle performance.
7. Are there any DIY repairs I can attempt to fix the Particulate Matter Sensor Control Module Temperature Sensor 2 Low Voltage issue causing code P142E in my Chevrolet?
- DIY repairs may include checking and replacing the temperature sensor, inspecting and repairing wiring connections, and clearing the fault code using an OBDII scanner.
8. How much does it typically cost to repair the Particulate Matter Sensor Control Module Temperature Sensor 2 Low Voltage problem associated with OBDII code P142E in a Chevrolet?
- Repair costs can vary depending on the specific issue, but it may involve replacing the temperature sensor, repairing wiring, or addressing control module issues, potentially ranging from $100 to $500 or more.
9. Can weather conditions or driving habits affect the occurrence of the Particulate Matter Sensor Control Module Temperature Sensor 2 Low Voltage issue and trigger code P142E in a Chevrolet?
- Extreme weather conditions or driving habits that put additional stress on the emissions control system can potentially contribute to the occurrence of this issue, but the root cause is usually related to component malfunction.
10. Is it necessary to reset the OBDII system after repairing the Particulate Matter Sensor Control Module Temperature Sensor 2 Low Voltage problem causing code P142E in a Chevrolet?
- Yes, it is recommended to clear the fault code and reset the OBDII system after repairing the issue to ensure that the problem has been successfully addressed and to turn off the check engine light.
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