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P1380 Cadillac Code - Misfire Detected - Rough Road Data Not Available

Quick Answer

The P1380 Cadillac diagnostic trouble code (DTC) indicates that a misfire has been detected in the engine, but the rough road data required to pinpoint the issue is not available. Common causes include Faulty ignition system components: Issues with spark plugs, ignition coils, or spark plug wires can lead to misfires, Fuel system problems: Clogged fuel injectors, a failing fuel pump, or a dirty fuel filter can disrupt the fuel delivery, causing misfires, Vacuum leaks: Air leaks in the intake manifold or vacuum hoses can affect the air-fuel mixture, leading to misfires. 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
P1380 Cadillac indicates Misfire Detected - Rough Road Data Not Available.
Common causes
Common causes include Faulty ignition system components: Issues with spark plugs, ignition coils, or spark plug wires can lead to misfires, Fuel system problems: Clogged fuel injectors, a failing fuel pump, or a dirty fuel filter can disrupt the fuel delivery, causing misfires, Vacuum leaks: Air leaks in the intake manifold or vacuum hoses can affect the air-fuel mixture, leading to misfires.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 10, 2024
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Code P1380 Cadillac Description

The P1380 Cadillac diagnostic trouble code (DTC) indicates that a misfire has been detected in the engine, but the rough road data required to pinpoint the issue is not available. This code typically appears in vehicles equipped with OBD-II (On-Board Diagnostics) systems, which monitor the performance of various components in the vehicle. When a misfire occurs, it means that one or more cylinders in the engine are not firing properly, leading to a lack of power, rough idling, and potentially harmful emissions.

OBDII Code P1380 Cadillac - Misfire Detected - Rough Road Data Not Available
P1380 Cadillac Code - Misfire Detected - Rough Road Data Not Available

Common Causes of P1380 Cadillac

  1. Faulty ignition system components: Issues with spark plugs, ignition coils, or spark plug wires can lead to misfires.
  2. Fuel system problems: Clogged fuel injectors, a failing fuel pump, or a dirty fuel filter can disrupt the fuel delivery, causing misfires.
  3. Vacuum leaks: Air leaks in the intake manifold or vacuum hoses can affect the air-fuel mixture, leading to misfires.
  4. Engine mechanical issues: Problems with the piston rings, valves, or cylinder compression can result in misfires.

Symptoms of P1380 Cadillac

  1. Rough idling: The engine may vibrate excessively or feel unstable when idling.
  2. Loss of power: The vehicle may struggle to accelerate or maintain speed.
  3. Engine hesitation: There may be delays in response when pressing the accelerator.
  4. Increased fuel consumption: A misfire can lead to inefficiencies in the combustion process, causing the engine to consume more fuel than usual.

How to Fix P1380 Cadillac

  1. Diagnose the specific cylinder: Use a scan tool to identify which cylinder is experiencing the misfire.
  2. Inspect ignition system components: Check the condition of spark plugs, ignition coils, and spark plug wires for any signs of wear or damage.
  3. Check fuel system components: Inspect fuel injectors, fuel pump, and fuel filter for any issues that may be causing misfires.
  4. Address vacuum leaks: Check for leaks in the intake manifold or vacuum hoses and repair as needed.
  5. Perform a compression test: Test the compression levels in each cylinder to rule out any mechanical issues causing misfires.

Cost to Fix P1380 Cadillac

The typical repair costs for addressing a misfire detected with the P1380 Cadillac code can range from $100 to $500, depending on the specific cause of the issue and the parts needed for the repair. This estimate includes parts and labor, with labor rates varying between $80 and $150 per hour at most auto repair shops. Additional costs may apply if further diagnostics or multiple components need to be replaced. It's recommended to consult with a professional mechanic to get an accurate quote based on your vehicle's make and model.

What does this mean?

Tech Notes for P1380 Cadillac

If the P1380 code is set with other codes, repair other codes first and then clear the code.

When is the Code Detected?

If the Electronic Brake Control Module (EBCM) detects a condition which will not allow the EBCM to properly identify rough road situations while a misfire condition is being detected by the Powertrain Control Module (PCM), DTC P1380 will set.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

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