P0302 2009 Ford Fusion Code - Cylinder 2 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 #2, Clogged or faulty Fuel Injector #2, Faulty Ignition Coil #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 2009 Ford Fusion indicates Cylinder 2 Misfire Detected.
- Common causes
- Common causes include Faulty Spark Plug #2, Clogged or faulty Fuel Injector #2, Faulty Ignition Coil #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.
Code P0302 2009 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 2.
What are the Possible Causes of the DTC P0302 2009 Ford Fusion?
- Faulty Spark Plug #2
- Clogged or faulty Fuel Injector #2
- Faulty Ignition Coil #2
- Fuel Injector #2 harness is open or shorted
- Fuel Injector #2 circuit poor electrical connection
- Ignition Coil #2 harness is open or shorted
- Ignition Coil #2 circuit poor electrical connection
- Insufficient cylinder 2 compression
- Incorrect fuel pressure
- Intake air leak
How to Fix the DTC P0302 2009 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 P0302 2009 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.
Need more information about the P0302 2009 Ford Fusion code?
Need more information on how to fix the P0302 2009 Ford Fusion code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P0302 2009 Ford Fusion code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P0302 2009 Ford Fusion Code
1. What does OBDII code P0302 for a 2009 Ford Fusion mean?
The code P0302 indicates a misfire in cylinder 2 of the engine in a 2009 Ford Fusion.
2. What are some common symptoms of a cylinder 2 misfire in a 2009 Ford Fusion?
Common symptoms of a cylinder 2 misfire include rough idling, loss of power, engine vibrations, and potentially increased fuel consumption.
3. What are the possible causes of a cylinder 2 misfire in a 2009 Ford Fusion?
Potential causes of a cylinder 2 misfire can include faulty spark plugs, damaged ignition coils, vacuum leaks, fuel injector issues, or low compression in the cylinder.
4. How can I diagnose a cylinder 2 misfire in my 2009 Ford Fusion?
To diagnose a cylinder 2 misfire, you can use a scan tool to read the OBDII code, visually inspect the spark plug and ignition coil, check for vacuum leaks, and perform a compression test on cylinder 2.
5. How can I fix a cylinder 2 misfire in my 2009 Ford Fusion?
Fixing a cylinder 2 misfire may involve replacing faulty spark plugs, ignition coils, fuel injectors, addressing vacuum leaks, or repairing any underlying engine mechanical issues causing the misfire.
6. Can I still drive my 2009 Ford Fusion with a cylinder 2 misfire?
It is not recommended to drive your 2009 Ford Fusion with a cylinder 2 misfire as it can lead to further damage to the engine and other components. It's best to address the issue promptly.
7. How much does it cost to repair a cylinder 2 misfire in a 2009 Ford Fusion?
The cost of repairing a cylinder 2 misfire in a 2009 Ford Fusion can vary depending on the underlying cause of the issue and the parts and labor required for the repair. It's best to consult a mechanic for an accurate estimate.
8. Can a cylinder 2 misfire in a 2009 Ford Fusion cause damage if left untreated?
Yes, a cylinder 2 misfire left untreated can lead to damage to the catalytic converter, oxygen sensors, and other engine components. It's important to address the issue promptly to prevent further damage.
9. Is it possible for a cylinder 2 misfire in a 2009 Ford Fusion to return after repair?
If the underlying issue causing the cylinder 2 misfire is not properly addressed, it is possible for the misfire to return. It's important to diagnose the root cause of the misfire to prevent recurrence.
10. How often should I replace spark plugs in a 2009 Ford Fusion to prevent cylinder misfires?
It is recommended to replace the spark plugs in a 2009 Ford Fusion every 30,000 to 100,000 miles, depending on the type of spark plugs used. Regular maintenance can help prevent cylinder misfires.
Discuss the causes and fixes for P0302 2009 Ford Fusion OBDII Code
Code P0302 2009 Ford Fusion comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
