P118B Chevrolet Code - Particulate Matter Sensor Temperature Not Plausible
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
- P118B Chevrolet indicates Particulate Matter Sensor Temperature Not Plausible.
- 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 P118B 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).
What are the Possible Causes of the DTC P118B 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 P118B 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 P118B 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.
Need more information about the P118B Chevrolet code?
Need more information on how to fix the P118B Chevrolet code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P118B Chevrolet code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P118B Chevrolet Code
1. What are the common symptoms of OBDII code P118B in a Chevrolet related to the Particulate Matter Sensor Temperature Not Plausible?
- Common symptoms include poor engine performance, reduced fuel efficiency, and the illumination of the check engine light.
2. What are some possible causes of OBDII code P118B in a Chevrolet indicating an issue with the Particulate Matter Sensor Temperature Not Plausible?
- Possible causes may include a faulty particulate matter sensor, a damaged sensor wiring harness, or a software issue in the engine control module.
3. How can I diagnose the OBDII code P118B in my Chevrolet that points to the Particulate Matter Sensor Temperature Not Plausible?
- Diagnosis involves using a scan tool to retrieve the trouble code, checking the sensor wiring for damage, and testing the sensor's resistance and voltage readings.
4. Can I continue driving my Chevrolet with OBDII code P118B related to the Particulate Matter Sensor Temperature Not Plausible?
- It is not recommended to continue driving with this code unresolved, as it can lead to further engine damage and increased emissions.
5. What are some repair tips for resolving OBDII code P118B in a Chevrolet due to the Particulate Matter Sensor Temperature Not Plausible?
- Repair tips may include replacing the faulty sensor, repairing damaged wiring, updating the engine control module software, and clearing the trouble code with a scan tool.
6. Is it possible to reset the OBDII code P118B related to the Particulate Matter Sensor Temperature Not Plausible without fixing the underlying issue?
- While you can clear the code temporarily, it will likely reappear until the root cause is addressed.
7. How much does it typically cost to repair OBDII code P118B in a Chevrolet caused by the Particulate Matter Sensor Temperature Not Plausible?
- Repair costs can vary depending on the extent of the issue, but it may involve sensor replacement, wiring repairs, or software updates, which could range from $100 to $500 or more.
8. Will OBDII code P118B in a Chevrolet affect the vehicle's emissions or cause it to fail an emissions test?
- Yes, this code can impact emissions and may cause the vehicle to fail an emissions test until the issue is resolved.
9. How long does it usually take to repair OBDII code P118B in a Chevrolet associated with the Particulate Matter Sensor Temperature Not Plausible?
- Repair times can vary based on the exact cause of the issue, but it typically takes a few hours to a day to diagnose and fix the problem.
10. Can a DIY enthusiast fix OBDII code P118B in a Chevrolet linked to the Particulate Matter Sensor Temperature Not Plausible, or is it recommended to seek professional help?
- While some may attempt DIY repairs, it is generally recommended to seek professional help, especially for complex sensor replacements or software-related issues to ensure proper resolution.
Discuss the causes and fixes for P118B Chevrolet OBDII Code
Code P118B Chevrolet comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
