TSB A21010B — Honda Service bulletin
A21010B is a service bulletin on file with NHTSA for the Honda Fit, 2016–2019 model years. A TSB is factory repair guidance, not a recall — the repair is not automatically free.
What the bulletin says. "ServiceNews Article - If normal troubleshooting suggests replacing the fuel injectors, check the long-term fuel trim using the i-HDS to ensure that it's fixed right the first time. -If it is less than 1.0% (lean), then it's most likely caused by the injectors. -If it is more…
NHTSA's own summary of the document, quoted from the public manufacturer-communications file.
Vehicles and model years A21010B names
Every document filed under A21010B
| Document ID | Filed | Type |
|---|---|---|
| A21010B | January 18, 2021 | Service bulletin |
What A21010B covers
Fuel system, Engine — the component vocabulary NHTSA files this communication under.
Questions buyers ask
What is TSB A21010B?
A21010B is a service bulletin filed with NHTSA by Honda, covering the Honda Fit across the 2016–2019 model years. NHTSA's summary reads: "ServiceNews Article - If normal troubleshooting suggests replacing the fuel injectors, check the long-term fuel trim using the i-HDS to ensure that it's fixed right the first time. -If it is less than 1.0% (lean), then it's most likely caused by the injectors. -If it is more…
Which vehicles does A21010B cover?
NHTSA's file names Honda Fit (2016, 2019). A bulletin number can be re-issued against more vehicles later, so check the model-year list on this page against your own.
Is TSB A21010B a recall, and is the repair free?
No. A21010B is repair guidance the manufacturer sent its dealers, not a safety defect finding. You pay for the work unless the vehicle is still under warranty. Recall repairs, by contrast, are always free.
How do I get the full text of A21010B?
Take the document ID to a dealer's service desk, or search NHTSA's manufacturer-communications records. This page carries every document ID filed under A21010B, its date, and NHTSA's own summary from the public file.
Every number on this page is a count of records in the federal complaint, recall, and investigation files published by NHTSA's Office of Defects Investigation. This page lists only what NHTSA's manufacturer-communications file records under A21010B. Check any specific vehicle's open recalls by VIN at nhtsa.gov/recalls.