[SOLVED] P118B Code: Fixing Particulate Matter Sensor Temperature Imbalance

The automobile fault code P118B indicates a problem with the Exhaust Particulate Matter Sensor. This can be identified by the Engine Light being ON or the Service Engine Soon Warning Light appearing.

The cause of this fault code could be a faulty sensor, an open or shorted sensor harness, or a poor electrical connection in the sensor circuit.

To fix this issue, it is recommended to visually inspect the wiring harness and connectors, checking for any damage or corrosion. Additionally, look for any broken, bent, pushed out, or corroded pins in the connectors.

The repair time for this issue is estimated to be around 1.0.

It is important to address this fault code promptly to ensure optimal performance and avoid further complications.

Repair Importance Level10.0 (Out of 10)
Estimated Repair TimeApproximately 1.0 hour
Repair Difficulty Level10.0 (Out of 10)

If you see the Engine Light ON or the Service Engine Soon Warning Light, it could be due to the p118b fault code.

  • The symptoms of the automobile fault code P118B include the Engine Light being ON or the Service Engine Soon Warning Light being illuminated.

The automobile fault code p118b can be caused by a faulty exhaust particulate matter sensor, an open or shorted sensor harness, or a poor electrical connection in the sensor circuit.

  • The fault code P118B can be caused by the following: a faulty Exhaust Particulate Matter Sensor, an open or shorted Exhaust Particulate Matter Sensor harness, and a poor electrical connection in the Exhaust Particulate Matter Sensor circuit.

To fix the automobile fault code p118b, start by visually inspecting the wiring harness, connectors, and components for any damage or corrosion.

  • To fix the automobile fault code P118B, start by checking the possible causes mentioned above.
  • Then, visually inspect the wiring harness and connectors related to the issue.
  • Look for any damaged components and check if there are any broken, bent, pushed out, or corroded pins in the connectors.
  • This fix is estimated to take approximately 1.0 hour.

The factors influencing the diagnosis and fixing cost of the automobile fault code P118B are the estimated repair time of 1.0 hour and the average hourly rate charged by auto repair shops, which ranges between $75 and $150.

The P118B fault code indicates that the temperature of the particulate matter sensor is not plausible. This sensor is responsible for monitoring the amount of soot in the diesel exhaust gas. It works by measuring the electrical conductivity of the particulates in the exhaust gas. The sensor has a ceramic element with comb-shaped interdigital electrodes, a heater, and a temperature measurement resistor.

As the exhaust gas flows over the sensor, soot is absorbed between the electrodes, creating a conductive path. This path generates a current based on the applied voltage. To ensure accurate readings, the sensor undergoes a regeneration process where the soot is cleaned off by heating the element.

Once a preset current value is reached, the measurement phase begins. The number of regenerations is determined by the vehicle’s strategy. When the calibrated number of regenerations is reached, the cumulative current readings are used to determine the concentration of soot in the exhaust gas.

This information is crucial in determining the efficiency of the diesel particulate filter. If the P118B fault code appears, it means that the temperature reading from the particulate matter sensor is not plausible.

This could be due to a faulty sensor, wiring issues, or a problem with the sensor control unit.

It is important to address this issue promptly to ensure accurate monitoring of the soot levels in the exhaust gas.

What are the possible causes of the automobile fault code P118B?

If you see the engine light or service engine soon warning light on, the fault code P118B could be the culprit. This code is often caused by a faulty exhaust particulate matter sensor, an open or shorted sensor harness, or a poor electrical connection in the sensor circuit. To fix the issue, visually inspect the wiring harness and connectors, checking for any damage or corrosion. Also, look out for broken, bent, pushed out, or corroded pins in the connectors.

How can I visually inspect the wiring harness and connectors related to the Exhaust Particulate Matter Sensor?

If you’re dealing with an Engine Light ON or Service Engine Soon Warning Light, the culprit could be a faulty Exhaust Particulate Matter Sensor. To fix this issue, start by visually inspecting the wiring harness and connectors related to the sensor. Look out for any damaged components and check for broken, bent, pushed out, or corroded connector pins. This thorough inspection will help you identify any open circuits, shorts, or poor electrical connections that may be causing the problem.

What should I look for when checking for damaged components or corroded connector pins to fix the P118B fault code?

When troubleshooting the P118B fault code, start by visually inspecting the wiring harness and connectors related to the Exhaust Particulate Matter Sensor. Look for any damaged components and check for broken, bent, pushed out, or corroded connector pins. These issues can cause a poor electrical connection and lead to the faulty sensor. By checking and addressing these potential causes, you can effectively fix the issue and clear the Engine Light or Service Engine Soon Warning Light.

p118b error fault code explained

If your engine light is on, it could be due to a faulty Exhaust Particulate Matter Sensor or issues with the sensor’s harness or circuit connection. To fix this, visually inspect the wiring harness and connectors for any damage. Check for broken, bent, pushed out, or corroded pins on the connectors.

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