P0306 2010 Ford Fusion Code - Cylinder 6 Misfire Detected
Quick Answer
Misfire is defined as a lack of combustion in a cylinder due to the absence of a spark, incorrect fuel metering, low compression, or any other cause. Common causes include Faulty spark plug 6, Clogged or faulty fuel injector 6, Faulty ignition coil 6. 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
- P0306 2010 Ford Fusion indicates Cylinder 6 Misfire Detected.
- Common causes
- Common causes include Faulty spark plug 6, Clogged or faulty fuel injector 6, Faulty ignition coil 6.
- 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.
Code P0306 2010 Ford Fusion Description
When a misfire occurs, engine speed will fluctuate. If the engine speed fluctuates enough to cause the Crankshaft Position (CKP) sensor signal to vary, the Engine Control Module (ECM) can determine that a misfire is occurring.
The Malfunction Indicator Lamp (MIL) blinks once per second when detecting a misfire severe enough to cause catalyst damage. If the MIL is in a steady state due to a misfire, this indicates the threshold for emissions was exceeded and caused the vehicle to fail an inspection and maintenance tailpipe test.
This Diagnostic Trouble Code (DTC) sets when the misfire detection monitor detects an engine misfire in cylinder 6.
What are the Possible Causes of the DTC P0306 2010 Ford Fusion?
- Faulty spark plug 6
- Clogged or faulty fuel injector 6
- Faulty ignition coil 6
- Fuel injector 6 harness is open or shorted
- Fuel injector 6 circuit poor electrical connection
- Ignition coil 6 harness is open or shorted
- Ignition coil 6 circuit poor electrical connection
- Insufficient cylinder 6 compression
- Incorrect fuel pressure
- Intake air leak
How to Fix the DTC P0306 2010 Ford Fusion?
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.
Code Tech Notes
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0306 2010 Ford Fusion 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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Frequently Asked Questions about P0306 2010 Ford Fusion Code
1. What are the common symptoms of OBDII code P0306 (Cylinder 6 Misfire Detected) in a 2010 Ford Fusion?
- Common symptoms include engine misfiring, rough idling, loss of power, and increased fuel consumption.
2. What are the potential causes of the P0306 code in a 2010 Ford Fusion?
- The code can be triggered by issues such as a faulty ignition coil, spark plug, fuel injector, vacuum leak, or low compression in cylinder 6.
3. How can I diagnose the cause of a cylinder 6 misfire in my 2010 Ford Fusion?
- You can diagnose the issue by performing a thorough inspection of the ignition system, checking the spark plug and fuel injector in cylinder 6, and conducting a compression test.
4. Can a dirty or clogged fuel injector cause the P0306 misfire code in a 2010 Ford Fusion?
- Yes, a dirty or clogged fuel injector can disrupt the fuel delivery to cylinder 6, leading to misfiring and triggering the P0306 trouble code.
5. Is it safe to drive my 2010 Ford Fusion with OBDII code P0306 (Cylinder 6 Misfire Detected)?
- It is not recommended to drive the vehicle with a misfire, as it can cause further damage to the engine and negatively impact performance and fuel efficiency.
6. How can I repair OBDII code P0306 on my 2010 Ford Fusion?
- Repair options may include replacing the faulty ignition coil, spark plug, fuel injector, or addressing any vacuum leaks in cylinder 6 to resolve the misfire issue.
7. Can a bad ignition coil cause a cylinder 6 misfire in a 2010 Ford Fusion?
- Yes, a malfunctioning ignition coil can lead to inadequate spark delivery to cylinder 6, resulting in a misfire and the illumination of the P0306 trouble code.
8. What is the typical cost to repair OBDII code P0306 (Cylinder 6 Misfire Detected) in a 2010 Ford Fusion?
- The repair cost can vary depending on the exact cause of the misfire, but it may range from $100 to $500 or more, including parts and labor.
9. Will resetting the OBDII code P0306 in my 2010 Ford Fusion make the issue go away?
- Resetting the code may temporarily turn off the check engine light, but it will not fix the underlying problem causing the cylinder 6 misfire.
10. How often should I check and replace spark plugs in a 2010 Ford Fusion to prevent misfire issues like P0306?
- It is generally recommended to inspect and replace spark plugs every 30,000 to 100,000 miles, depending on the type of spark plugs used in your vehicle.
Discuss the causes and fixes for P0306 2010 Ford Fusion OBDII Code
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I I replaced all six pick up coil’s new spark plugs visually inspected everything as I went along clean the throttlebody and the Plenum also and put back together and still the same code 30626 and 400 any ideas
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Your next step is to check and clean the EGR valve. Faulty or clogged EGR Valve could set the P0306 and P0400 codes.
P0400 FORD - Exhaust Gas Recirculation Flow
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