Code P1380 – Misfire Detected – Rough Road Data Not Available

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Code P1380: Explanation and Solutions

Diagnostic code P1380 indicates detected engine misfires, particularly when driving on rough roads. Misfires occur when incomplete combustion happens in one or more cylinders, which can cause irregular engine operation. This code also indicates that rough road data is unavailable, preventing the vehicle’s sensors from effectively adjusting the engine under these conditions. This can lead to reduced engine performance, excessive fuel consumption, and damage to the catalytic converter if the problem persists.


Meaning of Code P1380

  • Full Description: Misfire Detected – Rough Road Data Not Available.

Common Causes of Code P1380

Here are the main causes of this code:

  • Ignition system component failure: faulty spark plugs, coils, or ignition wires.
  • Clogged fuel injectors, preventing an optimal air-fuel mixture.
  • Vacuum leaks in the air intake system.
  • Low compression in one or more cylinders.
  • Engine timing problems, affecting the combustion cycle.

Note: This list is not exhaustive, and other factors may contribute to the appearance of this code.


Symptoms Associated with Code P1380

A vehicle affected by this code may show the following signs:

  • Irregular idle or noticeable engine vibrations.
  • Loss of power or acceleration.
  • Increased fuel consumption.
  • Stalling or engine hesitation during acceleration.
  • Illumination of the check engine light on the dashboard.

Steps to Resolve Code P1380

Here is how to diagnose and fix this problem:

  1. Identify the affected cylinders with misfires using a diagnostic tool.
  2. Inspect the ignition system components: spark plugs, coils, and wiring. Replace faulty parts if necessary.
  3. Clean or replace clogged fuel injectors to ensure optimal injection.
  4. Check for any vacuum leaks in the intake system and repair them.
  5. Perform a compression test to detect any internal engine problems, such as worn piston rings or faulty valves.

Conclusion

Code P1380 highlights a misfire problem exacerbated by the unavailability of rough road data. Prompt inspection and appropriate repairs are essential to prevent worsening damage to the engine or catalytic converter and to restore the vehicle’s optimal operation.

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