Engine-CodesScion – P0302 Scion

P0302 Scion Code - Cylinder 2 Misfire Detected

Quick Answer

When a Scion vehicle displays the diagnostic trouble code P0302, it indicates that a misfire has been detected in cylinder 2 of the engine. Common causes include Faulty spark plugs: Worn or damaged spark plugs can prevent the fuel mixture from igniting properly, Ignition coil failure: A malfunctioning ignition coil can disrupt the spark delivery to cylinder 2, Clogged fuel injector: A clogged fuel injector can disrupt the fuel supply to cylinder 2. 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
P0302 Scion indicates Cylinder 2 Misfire Detected.
Common causes
Common causes include Faulty spark plugs: Worn or damaged spark plugs can prevent the fuel mixture from igniting properly, Ignition coil failure: A malfunctioning ignition coil can disrupt the spark delivery to cylinder 2, Clogged fuel injector: A clogged fuel injector can disrupt the fuel supply to cylinder 2.
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 P0302 Scion Description

When a Scion vehicle displays the diagnostic trouble code P0302, it indicates that a misfire has been detected in cylinder 2 of the engine. A misfire occurs when the fuel-air mixture in the combustion chamber fails to ignite at the proper time. This can lead to a lack of power, rough idling, poor fuel efficiency, and potentially even damage to the catalytic converter.

OBDII Code P0302 Scion - Cylinder 2 Misfire Detected
P0302 Scion Code - Cylinder 2 Misfire Detected

Common Causes of P0302 Scion

  1. Faulty spark plugs: Worn or damaged spark plugs can prevent the fuel mixture from igniting properly.
  2. Ignition coil failure: A malfunctioning ignition coil can disrupt the spark delivery to cylinder 2.
  3. Clogged fuel injector: A clogged fuel injector can disrupt the fuel supply to cylinder 2.
  4. Low compression: Low compression in cylinder 2 can prevent the fuel-air mixture from igniting.

Symptoms of P0302 Scion

  1. Rough idling: The vehicle may shake or vibrate excessively while idling.
  2. Loss of power: The engine may feel weak and struggle to accelerate.
  3. Engine hesitation: The vehicle may hesitate or jerk during acceleration.
  4. Increased fuel consumption: The vehicle may use more fuel than usual due to the inefficient combustion process.
  5. Check Engine Light: The Check Engine Light may illuminate on the dashboard to indicate a problem with the engine.

How to Fix P0302 Scion

  1. Diagnostic scan: Use a diagnostic scan tool to identify the specific cause of the misfire in cylinder 2.
  2. Replace spark plugs: Inspect and replace the spark plugs in cylinder 2 if they are worn or damaged.
  3. Test ignition coils: Check the ignition coils for proper function and replace any faulty coils.
  4. Clean fuel injectors: Clean or replace the fuel injectors to ensure proper fuel delivery to cylinder 2.
  5. Compression test: Perform a compression test on cylinder 2 to check for any issues with low compression.

Cost to Fix P0302 Scion

The cost of repairing a cylinder 2 misfire in a Scion can vary depending on the specific cause of the issue. On average, the repair costs for this type of problem can range from $100 to $500, including parts and labor. However, it's important to note that the actual cost may differ based on factors such as the location of the repair shop, the model of the vehicle, and the extent of the repairs needed. It's recommended to consult with a qualified mechanic to get an accurate estimate for the repair.

Tech Notes for P0302 Scion

The P0302 code means that cylinder #2 is misfiring or is randomly misfiring. Start by checking for intake leaks and if no leaks are found the next step is to replace the spark plugs on cylinder #2. If the problem persists more tests need to be done to diagnose the problem. See "Possible Causes" for the most common problems.

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Information for Specific Scion Models

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.

Frequently Asked Questions about P0302 Scion Code

1. What are common symptoms of OBDII code P0302 in a Scion, indicating a cylinder 2 misfire?

- Common symptoms include rough idle, loss of power, engine vibration, and potential increase in fuel consumption.

2. What are the possible causes of a cylinder 2 misfire detected in a Scion triggering OBDII code P0302?

- Possible causes may include faulty spark plugs, ignition coils, fuel injectors, vacuum leaks, or issues with the engine's compression.

3. How can I diagnose the source of a cylinder 2 misfire in my Scion when experiencing code P0302?

- Diagnostic steps may involve checking the spark plugs, ignition coils, fuel injectors, vacuum lines, and performing a compression test on cylinder 2.

4. Can driving with OBDII code P0302 (cylinder 2 misfire) in a Scion cause further damage to the engine?

- Continuing to drive with a misfire can potentially cause damage to the catalytic converter, so it is recommended to address the issue promptly.

5. Are there any simple DIY repairs I can attempt to fix a cylinder 2 misfire in my Scion triggering code P0302?

- DIY repairs may include replacing spark plugs, swapping ignition coils, or cleaning/replacing fuel injectors, depending on the identified issue.

6. How important is it to address OBDII code P0302 (cylinder 2 misfire) in a Scion promptly?

- Addressing code P0302 promptly is essential to prevent potential damage to the engine and ensure optimal performance and fuel efficiency.

7. Can a cylinder 2 misfire in a Scion causing OBDII code P0302 be intermittent or sporadic?

- Yes, a misfire can be intermittent, occurring only under specific conditions, making diagnosis and repair more challenging.

8. What is the typical cost to repair a cylinder 2 misfire detected in a Scion leading to code P0302?

- The cost of repair can vary depending on the exact cause, but it may range from a few hundred to over a thousand dollars, including parts and labor.

9. Will resetting the OBDII system clear code P0302 related to the cylinder 2 misfire in my Scion?

- Resetting the system may clear the code temporarily, but if the underlying issue causing the misfire is not addressed, the code is likely to return.

10. Is it advisable to seek professional help for diagnosing and repairing OBDII code P0302 (cylinder 2 misfire) in a Scion?

- Yes, it is recommended to consult a qualified mechanic or technician to accurately diagnose and repair the underlying issue causing the misfire and code P0302.

Discuss the causes and fixes for P0302 Scion OBDII Code

  • I just bought the 2006 scion xb . Last night the check engine light came on and the car started to missfire. I went to advance auto and the code was p0302. Is this an easy fix?

  • It depends what the problem is. I suggest starting by replacing the #2 spark plug, replaced all spark plugs if necessary.