2007-2008 Honda Fit Ignition Coil Failure: Misfires, Stuttering, and Diagnosis

Symptoms of a Failing Ignition Coil

Ignition coil failure is a very common issue on the 2007-2008 Honda Fit, often starting around 60,000 miles. The symptoms can start as minor annoyances but will worsen over time, potentially leaving the vehicle undrivable. Here are the most common signs:

• Engine Stutter or Hesitation: The most frequently reported symptom is a noticeable stutter, jerk, or hesitation, especially under load like going uphill or accelerating.
• Rough Idle: The engine may vibrate or run unevenly when stopped at a light or idling. This can be worse when the A/C is on.
• Check Engine Light (CEL): A failing coil will almost always trigger the Check Engine Light. If the light is flashing, it indicates a severe misfire that can quickly damage your catalytic converter.
• Misfire Trouble Codes: When scanned, the vehicle's computer will store specific trouble codes. Codes P0301, P0302, P0303, and P0304 correspond to a misfire in cylinders 1, 2, 3, and 4, respectively. A P0300 code indicates a random or multiple-cylinder misfire.
• Reduced Power and Fuel Economy: Because one or more cylinders aren't firing correctly, the engine will feel sluggish and you'll notice a significant drop in gas mileage.
• Stalling: In advanced stages of failure, the engine may stall completely, especially when idling.

Known Issues, Recalls, and TSBs for 2007-2008 Honda Fit

While ignition coil failure is a widely recognized problem for the first-generation Fit, there have been no specific safety recalls issued by the NHTSA for this part on the 2007-2008 models. An ignition coil recall (NHTSA Campaign 15V-559) was issued for the 2015 model year, but it does not apply to the 2007-2008 generation. Owners have frequently reported the issue to Honda, but it is generally treated as a maintenance or wear-and-tear item.

There are, however, other recalls for the 2007-2008 Fit you should be aware of, including for a power window master switch that could be a fire risk and for wire harness corrosion in the SRS (airbag) system. You can check if your specific vehicle is affected by these recalls by entering your VIN on the NHTSA website.

Diagnosing a Bad Coil Pack

Diagnosing a bad coil is a straightforward process you can do at home with basic tools.

1. Read the Codes: Use an OBD-II scanner to read the trouble codes. A code like P0302 points directly to a misfire on cylinder #2.
2. The Swap Test: This is the easiest way to confirm a bad coil. Let's say you have a P0302 code (misfire cylinder 2). Swap the ignition coil from cylinder 2 with the one from cylinder 1.
3. Clear and Re-Scan: Clear the trouble codes with your scanner, start the engine, and let it run for a few minutes. Re-scan for codes.
4. Check the Results: If the trouble code has moved to cylinder 1 (now showing P0301), you have confirmed that the coil you moved is faulty. If the code remains P0302, the problem is likely the spark plug, fuel injector, or something else in that cylinder.

Buying a Used 2007-2008 Fit Ignition Coil

Given the high failure rate, buying a used ignition coil requires careful inspection. However, a low-mileage used OEM coil is often a more reliable and cost-effective choice than a cheap, new aftermarket part.

• Verify Compatibility: Ensure the coil is from a 2007-2008 Honda Fit with the 1.5L L15A engine. The OEM manufacturer is Hitachi. Look for part numbers like 30520-PWC-003, 30520-PWC-S01 (a later revision), or the Hitachi part number CM11-110 or IGC0053.
• Physical Inspection:
  • Check the plastic housing for any cracks, melting, or signs of arcing (white or black burn marks).
  • Inspect the rubber boot. It should be flexible and free of cracks or discoloration. A dried-out or dark, burnt-looking boot can be a sign that it was installed over a loose spark plug.
  • Look at the electrical connector pins. They should be clean, straight, and free of corrosion.
  • Examine the spring contact inside the boot. It should be clean and free of white, powdery corrosion.
• Source Vehicle Mileage: If possible, choose coils from a lower-mileage vehicle. Coils from a Fit with under 100,000 miles are preferable, as failures become more common after this point.
• Why Used OEM is Often Better: The original Hitachi coils are high-quality parts. Many aftermarket coils, especially from no-name brands online, have a very high failure rate, sometimes failing within weeks or months. A used OEM part that has already proven its reliability for thousands of miles is often a safer bet than an unproven, cheaply made new part.

Cost Comparison

Prices can vary by supplier and location, but here is a general cost breakdown for a single ignition coil:

Replacement Guide (Difficulty: 1/5)

Replacing the ignition coils on a 2007-2008 Fit 🎬 See step-by-step spark plug and coil pack replacement is one of the easiest repairs you can perform. It requires minimal tools and can be done in under 30 minutes.

• Tools Needed: 10mm socket with a ratchet and extension.
• Location: The four coils are located on the back side of the engine, facing the firewall.
• Step 1: Let the engine cool down completely.
• Step 2: Locate the coil you wish to replace.
• Step 3: Press the tab on the electrical connector and pull it straight off the coil.
• Step 4: Use the 10mm socket to remove the single bolt holding the coil in place.
• Step 5: Gently twist and pull the coil straight up and out of the spark plug tube.
• Step 6: Before installing the new coil, apply a small amount of dielectric grease 🎬 Watch this video guide replacing coils on a Fit Sport to the inside of the rubber boot. This prevents corrosion and makes future removal easier.
• Step 7: Press the new coil firmly down into the spark plug tube until it seats. Reinstall the 10mm bolt (hand-tighten first, then snug it down—do not overtighten). Reconnect the electrical plug.

Frequently Asked Questions (FAQ)

Technical Specifications & Part Numbers