TECHLINE SUMMARY ARTICLE - IF YOU RUN ACROSS A SPARK PLUG THATS LOOSE OR HAS BLOWN OUT OF THE CYLINDER HEAD BEFORE REACHING THE FIRST SERVICE INTERVAL (GENERALLY AT 105K), CHANCES ARE IT WASNT TORQUED ENOUGH WHEN IT WAS INSTALLED AT THE FACTORY. THE CONSEQUENCES OF THIS CAN BE AS MINOR AS REINSTALLING THE SPARK PLUG TO COMPLETE CYLINDER HEAD REPLACEMENT DUE TO SPARK PLUG THREAD HOLE DAMAGE.
full bulletin at NHTSA ↗2012 Honda Fit electrical problems
severe Owners of the 2012 Honda Fit have filed 6 NHTSA complaints about the electrical at roughly $850 to repair (U.S. federal records, as of July 2026). Source: NHTSA Office of Defects Investigation. See electrical across all vehicles →
| Model year | electrical complaints |
|---|---|
| 2008 Fit | 15 |
| 2009 Fit | 15 |
| 2010 Fit | 15 |
| 2011 Fit | 5 |
| 2012 Fit (this page) | 6 |
| 2013 Fit | 19 |
| 2015 Fit | 108 |
| 2016 Fit | 54 |
When does it fail?
Of the 6 electrical complaints filed for the 2012 Honda Fit, here's the actual mileage breakdown — failures cluster heaviest at 75,000-100,000 mi.
Each bar shows the share of total complaints filed at that mileage range. Peak failure window highlighted. Some owners report problems earlier; some make it well past 150,000 miles symptom-free. Maintenance habits and driving conditions shift the curve as much as mileage alone.
No new NHTSA electrical complaint has been filed on this vehicle in over 9 years — the issue may be aging out of the active population.
Is there a fix? Manufacturer service bulletins
The manufacturer has issued service bulletins covering electrical on this vehicle — documented repair instructions, service campaigns, or warranty extensions sent to dealers. A TSB isn't a recall (it's not a free safety remedy), but it's the manufacturer acknowledging the issue and how to fix it.
TECHLINE SUMMARY ARTICLE - IF YOU RUN ACROSS A SPARK PLUG THATS LOOSE OR HAS BLOWN OUT OF THE CYLINDER HEAD BEFORE REACHING THE FIRST SERVICE INTERVAL (GENERALLY AT 105K), CHANCES ARE IT WASNT TORQUED ENOUGH WHEN IT WAS INSTALLED AT THE FACTORY. THE CONSEQUENCES OF THIS CAN BE AS MINOR AS REINSTALLING THE SPARK PLUG TO COMPLETE CYLINDER HEAD REPLACEMENT DUE TO SPARK PLUG THREAD HOLE DAMAGE.
full bulletin at NHTSA ↗HONDA: ON SOME MODEL VEHICLES, THERE IS AN ALTERNATOR/STARTER TESTER (AST) MODULE CAPABLE OF TESTING ALTERNATORS, INSTALLED ON GR8 DIAGNOSTIC BATTERY STATION.
full bulletin at NHTSA ↗Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
What owners are reporting 1 most recent
At around 50,000 miles rear passenger side door lock fails to open when using power unlock system from front door or key. Must manually unlock. At 75,000 miles driver door fails to unlock or lock using power unlock/lock system and must manually be locked/unlocked. The locking/unlocking power systems started as intermittent but have become non-functional now.
Common questions
How serious is the electrical problem on the 2012 Honda Fit?
It's a meaningful issue. 6 complaints have been filed and the failure mode causes operational problems for owners. Repairs average $850.
At what mileage does the electrical typically fail?
Based on the 6 complaints filed, electrical issues most often appear around 32,650 miles. Some report problems earlier; some make it well past 150,000 with no symptoms. Maintenance habits matter — vehicles that received timely fluid services and were not regularly overworked tend to last longer.
What does it cost to fix?
Independent shops typically charge around $850 for electrical repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Are there any recalls related to electrical?
No active recalls currently cover electrical issues on this vehicle. The complaints filed represent owner-reported failures that haven't risen to the level of a manufacturer-issued recall — but they're still worth knowing about before you buy or budget for repairs.