P1890 has a source-scoped interpretation in a manufacturer document. Check the raw form, vehicle conditions and original bulletin before using it.
This meaning belongs to the cited manufacturer document and its conditions. It is not a universal code definition, a VIN-specific match, a driving clearance or a parts diagnosis. Independent safety review remains pending.
This American Honda document supports only its stated code and vehicle context. The code alone cannot identify a failed part, prove that another make uses the same definition, or clear a car for driving. Compare your full scan with the current exact-vehicle service information.
Read the American Honda original: Accord/CR-V CVT software product update and P1890 branch Source date: 2016-08-03; research checked: 2026-11-01.
What the manufacturer document says
The same root can have a different meaning or role in another module or vehicle. Preserve the full raw code and suffix rather than applying this table to every car.
| Raw form | Meaning in source | Document | Case context |
|---|---|---|---|
| P1890 | CVT speed-control fault in the cited Honda communication. | American Honda Dealer communication: 16-053 / 16-057 | Honda CVT P1890: software-only versus transmission repair |
Vehicle scope recorded in the source
- Honda Accord · 2015, 2016 · CVT
- Honda CR-V · 2015, 2016 · CVT
What to record before clearing the code
- Record RPM surging and prior dealer software work without reproducing it at speed.
- Note other codes and the exact dashboard message; a generic reader may miss the affected module.
Questions before a repair or part order
- Do not assume clearing the code restores damaged belt hardware.
- Does the current manufacturer document cover this VIN, engine, build date and symptom?
- Is a recall, warranty or newer service communication relevant? A bulletin alone is not free-repair eligibility.
How to use this research note
The source document is historical and may have a later revision. Its cited vehicle table is a condition to verify, not a complete list of affected VINs. A code can be secondary to another fault. If braking, steering, propulsion, temperature, smoke, fuel or high-voltage behavior is unsafe, stop safely and seek qualified help rather than using this page to continue driving.
Sources and scope
- American Honda — Accord/CR-V CVT software product update and P1890 branch (Dealer communication: 16-053 / 16-057) Document: 2016-08-03 · Research checked: 2026-11-01
Research snapshot: 2026-11-01. Source documents may have newer revisions. Verify current instructions and VIN eligibility with the manufacturer.