AutoCodes – Scion – P0302 2006 Scion xB

P0302 2006 Scion xB Code - Cylinder 2 Misfire Detected

Quick Answer

When the engine misfires, high concentrations of hydrocarbons (HC) enter the exhaust gas. Common causes include Faulty spark plug (s), Faulty ignition coil (s), Clogged or faulty fuel injector (s). 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 2006 Scion xB indicates Cylinder 2 Misfire Detected.
Common causes: Common causes include Faulty spark plug (s), Faulty ignition coil (s), Clogged or faulty fuel injector (s).
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.

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Code Popularity 5,244

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jun 14, 2020

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0302 2006 Scion xB Description

When the engine misfires, high concentrations of hydrocarbons (HC) enter the exhaust gas. Extremely high HC concentration levels can cause increases in exhaust emission levels. High concentrations of HC can also cause increases in the Three-Way Catalytic Converter (TWC) temperature, which may cause damage to the TWC. To prevent these increases in emissions and to limit the possibility of thermal damage, the ECM monitors the misfire rate. When the temperature of the TWC reaches the point of thermal degradation, the ECM blinks the MIL. To monitor misfires, the ECM uses both the Camshaft Position (CMP) sensor and the Crankshaft Position (CKP) sensor. The CMP sensor is used to identify any misfiring cylinders and the CKP sensor is used to measure variations in the crankshaft rotation speed. Misfires are counted when the crankshaft rotation speed variations exceed predetermined thresholds. If the misfire exceeds the threshold levels, and could cause emission deterioration, the ECM illuminates the MIL and sets a DTC.

OBDII Code P0302 2006 Scion xB - Cylinder 2 Misfire Detected - AutoCodes.com — P0302 2006 Scion xB Code - Cylinder 2 Misfire Detected

What does this mean?

What are the Possible Causes of the DTC P0302 2006 Scion xB?

Faulty spark plug (s)
Faulty ignition coil (s)
Clogged or faulty fuel injector (s)
Intake air leak
Fuel injectors harness is open or shorted
Fuel Injectors circuit poor electrical connection
Ignition coils harness is open or shorted
Ignition coils circuit poor electrical connection
Insufficient cylinders compression
Incorrect fuel pressure
Mass air flow meter
Engine coolant temperature sensor
Valve clearance
Valve timing
ECM

How to Fix the DTC P0302 2006 Scion xB?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What does this mean?

Code Tech Notes

The P0302 code means that the 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 needs to be done to diagnose problem, see "Possible Causes"

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0302 2006 Scion xB code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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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.

Frequently Asked Questions about P0302 2006 Scion xB Code

1. What are the common symptoms of OBDII code P0302 in a 2006 Scion xB?

The common symptoms of code P0302, which indicates a misfire in cylinder 2, include engine vibrations, loss of power, rough idling, and potential fuel economy issues.

2. What are the possible causes of a cylinder 2 misfire in a 2006 Scion xB?

Common causes of a cylinder 2 misfire in a 2006 Scion xB can include faulty spark plugs, a malfunctioning ignition coil, clogged fuel injectors, vacuum leaks, or a problem with the engine's compression.

3. How can I diagnose the source of the cylinder 2 misfire in my 2006 Scion xB?

To diagnose the source of the cylinder 2 misfire, you can perform a visual inspection of spark plugs and ignition components, conduct a compression test, check for vacuum leaks, and use an OBDII scanner to retrieve specific error codes.

4. Are there any DIY repair tips for resolving a cylinder 2 misfire in a 2006 Scion xB?

DIY repair tips for addressing a cylinder 2 misfire include replacing spark plugs, inspecting and potentially replacing the ignition coil, cleaning or replacing fuel injectors, checking for vacuum leaks, and ensuring proper engine compression.

5. Can driving with a cylinder 2 misfire in a 2006 Scion xB cause further damage?

Continuing to drive with a cylinder 2 misfire can potentially lead to damage to the catalytic converter, oxygen sensors, or other engine components, so it's recommended to address the issue promptly.

6. How much does it typically cost to repair a cylinder 2 misfire in a 2006 Scion xB?

The cost of repairing a cylinder 2 misfire in a 2006 Scion xB can vary depending on the specific cause of the issue, but it may range from a couple of hundred dollars for basic repairs to over a thousand dollars for more extensive issues.

7. Is it safe to continue driving my 2006 Scion xB with a cylinder 2 misfire?

While it may be possible to drive short distances with a cylinder 2 misfire, it's not recommended for long-term use as it can lead to further engine damage and potential safety hazards. It's best to address the issue as soon as possible.

8. How long does it typically take to repair a cylinder 2 misfire in a 2006 Scion xB?

The time required to repair a cylinder 2 misfire in a 2006 Scion xB can vary based on the specific cause of the issue and the extent of repairs needed, but it may take a few hours to a full day for diagnosis and repair.

9. Can a cylinder 2 misfire in a 2006 Scion xB be fixed without professional help?

While some basic checks and repairs can be done by DIY enthusiasts, diagnosing and repairing complex issues related to a cylinder 2 misfire may require professional expertise and specialized tools.

10. Will resetting the OBDII code P0302 in my 2006 Scion xB make the misfire go away?

Resetting the OBDII code P0302 without addressing the underlying cause of the misfire will not fix the issue. It's important to diagnose and repair the root cause of the cylinder 2 misfire for a lasting solution.