NHTSA Complaint #11702680 — 2019 HONDA CR-V

At approximately 33,188 miles, an “AWD System Problem” warning appeared on the instrument cluster of my 2019 Honda CR‑V AWD. Darrell Waltrip Honda in Nashville, TN scanned the vehicle and retrieved DTC C1851‑1E, which indicates a rear differential pump motor high‑current fault. The dealer misinterpreted this code and advised that the AWD control unit (Part No. 48310‑5TG‑H52) needed replacement, but stated the vehicle was safe to drive so repairs could be completed at my home dealership in Lexington, KY. At Don Jacobs Honda in Lexington, KY, the same DTC C1851‑1E was correctly interpreted as a failure of the rear differential pump motor, which was then replaced under warranty. No AWD control unit replacement was required. Honda Service Bulletin 23‑031 (“AWD Light ON: DTC C1851‑1E / DTC C1851‑18 Stored”) documents this rear differential pump motor issue for 2020–2021 CR‑V AWD models. My vehicle is a 2019 CR‑V AWD with the same DTC and failure mode, suggesting that this defect is not limited to 2020–2021 model years. I am submitting this complaint so that NHTSA is aware of this similar failure on a 2019 vehicle and can evaluate whether the affected model‑year range should be expanded.