[SOLVED] P114B Code: Lean Fuel Trim – Fixing Post Catalyst Oxygen Sensor System

The automobile fault code P114B indicates a potential issue with the engine. When this code appears, the engine light or service engine soon warning light will turn on. The possible causes for this fault code include a leak in the exhaust system, a clogged catalytic converter, faulty pressure sensors on the intake, an open or shorted intake harness, poor electrical connection in the intake circuit, or a faulty fuel injector.

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

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

It is important to address this fault code promptly to prevent further damage to the engine.

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

When the engine light is on or the service engine soon warning light is illuminated, it could be a sign of the p114b fault code.

  • The symptoms of the automobile fault code p114b include the Engine Light being ON or the Service Engine Soon Warning Light being illuminated.

The automobile fault code p114b can be caused by a leak in the exhaust system, a clogged catalytic converter, faulty pressure sensors on the intake, an open or shorted pressure sensors on the intake harness, a poor electrical connection in the pressure sensors on the intake circuit, or a faulty fuel injector.

  • The fault code P114B can be caused by a leak in the exhaust system, a clogged catalytic converter, faulty pressure sensors on the intake, an open or shorted harness for the pressure sensors on the intake, a poor electrical connection in the pressure sensors on the intake circuit, or a faulty fuel injector.

To fix the automobile fault code p114b, start by visually inspecting the wiring harness, connectors, and components for any damage or corrosion.

  • To fix the automobile fault code p114b, 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 for broken, bent, pushed out, or corroded connector pins.
  • This fix is estimated to take approximately 1.0 hour.

The factors influencing the cost of diagnosing and fixing the automobile fault code p114b are the estimated repair time of 1.0 hour and the typical hourly rate charged by auto repair shops, which ranges between $75 and $150.

The P114B fault code is related to the lambda closed-loop mixture control in your vehicle. The Engine Control Module (ECM) sets this code when the mixture control is not within the factory specifications.

Specifically, the code indicates that the post-catalyst fuel trim via the oxygen sensor system is too lean on a particular bank of the engine.

This fault code suggests that there is an issue with the fuel mixture after the catalytic converter, resulting in a lean condition. A lean mixture means that there is not enough fuel in the air-fuel mixture, which can lead to poor engine performance and increased emissions. It is important to address this issue promptly to ensure optimal engine operation and to meet emission standards.

A qualified mechanic can diagnose the exact cause of the lean condition and make the necessary repairs to resolve the P114B fault code.

What are the possible causes of the automobile fault code p114b that could trigger the engine light to turn on?

If you see the engine light on or the service engine soon warning light, the fault code P114B could be the culprit. This code can be triggered by various causes, including a leak in the exhaust system, a clogged catalytic converter, faulty pressure sensors on the intake, an open or shorted harness for the pressure sensors on the intake, poor electrical connection in the pressure sensors on the intake circuit, or a faulty fuel injector. To fix this issue, start by visually inspecting the wiring harness and connectors. Look for any damaged components and check for broken, bent, pushed out, or corroded connector pins.

How can I visually inspect the wiring harness and connectors to identify any potential issues related to the fault code p114b?

If you’re dealing with the fault code p114b and your engine light is on, it’s time to visually inspect the wiring harness and connectors. This could be caused by a leak in the exhaust system, a clogged catalytic converter, faulty pressure sensors on the intake, an open or shorted intake harness, poor electrical connection in the intake circuit, or a faulty fuel injector. To fix it, check the possible causes mentioned earlier and carefully inspect the wiring harness and connectors for any damage or corrosion. Look out for broken, bent, pushed out, or corroded pins on the connectors.

What steps should I take to fix the fault code p114b and resolve the engine light being on?

To fix fault code p114b and resolve the engine light being on, start by checking the possible causes: a leak in the exhaust system, a clogged catalytic converter, faulty pressure sensors on the intake, an open or shorted intake harness, poor electrical connection in the intake circuit, or a faulty fuel injector. Visually inspect the wiring harness and connectors for any damage, and check for broken, bent, pushed out, or corroded pins on the connectors.

p114b error fault code explained

If you’re seeing the Engine Light ON or the Service Engine Soon Warning Light, it could be due to a leak in the exhaust system, a clogged catalytic converter, faulty pressure sensors on the intake, an open or shorted intake harness, or a faulty fuel injector.

To fix this, visually inspect the wiring harness and connectors, checking for any damage or corrosion.

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