Engine-CodesAcura – P1303 Acura

P1303 Acura Code - Cylinder Number 3 Random Misfire Detected

Quick Answer

The P1303 diagnostic trouble code for Acura vehicles indicates that a random misfire has been detected in cylinder number 3 of the engine. Common causes include Faulty ignition system components such as spark plugs, ignition coils, or spark plug wires, Fuel delivery issues, such as a clogged fuel injector or fuel filter, Engine mechanical problems, such as low compression in cylinder number 3. 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
P1303 Acura indicates Cylinder Number 3 Random Misfire Detected.
Common causes
Common causes include Faulty ignition system components such as spark plugs, ignition coils, or spark plug wires, Fuel delivery issues, such as a clogged fuel injector or fuel filter, Engine mechanical problems, such as low compression in cylinder number 3.
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.
Table of contents Created and updated by William Orellana on Sep 10, 2024
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Code P1303 Acura Description

The P1303 diagnostic trouble code for Acura vehicles indicates that a random misfire has been detected in cylinder number 3 of the engine. This means that the engine's computer has detected a problem with the combustion process in this specific cylinder, which can lead to a variety of performance issues.

OBDII Code P1303 Acura - Cylinder Number 3 Random Misfire Detected
P1303 Acura Code - Cylinder Number 3 Random Misfire Detected

Common Causes of P1303 Acura

  1. Faulty ignition system components such as spark plugs, ignition coils, or spark plug wires.
  2. Fuel delivery issues, such as a clogged fuel injector or fuel filter.
  3. Engine mechanical problems, such as low compression in cylinder number 3.
  4. Vacuum leaks in the intake system.
  5. Faulty engine control module (ECM) or sensors.

Symptoms of P1303 Acura

  1. Rough idling: The engine may run erratically or shake while idling.
  2. Loss of power: The vehicle may feel sluggish or have difficulty accelerating.
  3. Engine misfires: The engine may sound like it is sputtering or popping.
  4. Check Engine Light: The vehicle's check engine light may illuminate on the dashboard.

How to Fix P1303 Acura

  1. Diagnose the issue: Use a diagnostic scanner to pinpoint the cylinder number 3 misfire and identify the underlying cause.
  2. Check ignition system components: Inspect and replace faulty spark plugs, ignition coils, or spark plug wires.
  3. Check fuel system components: Test and clean fuel injectors, replace fuel filters if necessary.
  4. Check engine mechanical components: Perform a compression test to check for low compression in cylinder number 3.
  5. Clear the error codes: After completing repairs, clear the error code and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P1303 Acura

The cost of repairing a cylinder number 3 misfire in an Acura can vary depending on the specific cause of the issue. In general, replacement parts such as spark plugs, ignition coils, or fuel injectors can range from $50 to $200 each. The labor costs for diagnosis and repair can range from $150 to $500, depending on the shop's hourly rates and the complexity of the repair. Overall, the total cost of addressing a P1303 code in an Acura vehicle can range from $200 to $800. It is recommended to consult with a reputable auto repair shop for a more accurate cost estimate based on your vehicle's specific needs.

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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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