P0351 on Honda: How to Diagnose & Fix
Ignition Coil A Primary/Secondary Circuit Malfunction
1 Honda model · 1 documented issue · $80-$300 repair
P0351 on Honda by model: symptoms, diagnosis and fix
Ignition coil packs can fail causing engine misfires. Usually one coil fails at a time. Engine misfire, rough idle, check engine light with misfire codes. Bosch ($50-80 each) or Denso ($60-90 each) replacement coils recommended on FitFreak. Replace all four at once ($200-300) to prevent future failures and repeated labor costs. DIY installation very easy (bolt on, connector plug) - saves $100-200 in shop labor.
Common Symptoms
- Engine misfire
- Rough idle
- Check engine light with misfire codes P0300-P0308
- Reduced fuel economy
- Hesitation during acceleration
How to Fix
Test coil pack resistance with multimeter before replacing to confirm failure. Replace failed ignition coil pack. Consider replacing all four if one fails (preventive measure, $200-300 for all four). Bosch ($50-80 each) or Denso ($60-90 each) recommended. DIY installation very easy.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
- Genuine Honda 30520-PWC-S01 ignition coilOEMHonda 30520-PWC-S01
First-generation replacement after diagnosis identifies a failed coil Fitment/availability: 2007-2008 U.S. Honda Fit Base and Sport, 5MT or 5AT; one coil per cylinder.
- Genuine Honda 30520-RB0-S01 ignition coilOEMHonda 30520-RB0-S01
Second-generation replacement after diagnosis identifies a failed coil Fitment/availability: 2009-2013 U.S. Honda Fit Base/Fit and Sport, 5MT or 5AT; one coil per cylinder.
- Genuine Honda 30520-5R0-013 ignition coilOEMHonda 30520-5R0-013
Third-generation replacement after diagnosis identifies a failed coil Fitment/availability: 2015-2020 U.S. Honda Fit, all cataloged trims, 6MT or CVT; one coil per cylinder.
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Owner tips & cautions
- TipReplace all four at once ($200-300) to prevent future failures and repeated labor costs
- TipDIY installation is very easy - bolt on, connector plug - saves $100-200 in shop labor
- WarningAvoid knockoff coils on eBay/Amazon - they fail quickly and waste money
Sources for this issue (2)
P0351 code reference
General diagnostic-code context. The code alone does not confirm a cause for your vehicle; use the applicable issue card and its sources.
Frequently asked questions
What does P0351 mean on a Honda?
P0351 stands for "Ignition Coil A Primary/Secondary Circuit Malfunction." P0351 indicates the engine computer found a fault in the primary or secondary circuit of ignition coil 'A' (typically the coil for cylinder 1 or the first coil in the firing system). The PCM monitors the coil's control circuit, and when the electrical feedback doesn't match what it expects during firing, it sets this code. Because the coil creates the high-voltage spark, this often causes a misfire, rough idle, hesitation, or loss of power. It is a circuit/component fault for one specific coil rather than a general engine problem. On Honda it is documented across 1 model: Fit.
What are the most common causes of P0351?
The most common causes of P0351 are: Failed or weak ignition coil, Damaged or corroded coil connector or pigtail, Broken or shorted wiring in the coil control circuit, Loss of power feed or ground to the coil, Worn or fouled spark plug overloading the coil, Failed coil driver inside the PCM/ECM. The specific cause varies by vehicle.
How much does it cost to fix P0351 on a Honda?
Published repair estimates on Honda range from $80 to $300 depending on the model and root cause. If an issue mentions a recall or campaign, check your VIN with the manufacturer or NHTSA and confirm eligibility and coverage with a dealer.
Looking for P0351 on a different make?
View P0351 across all makes →Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.