2020 Honda Odyssey: Disconnected wire harness
Common wear/failure (not a recall)
Symptoms
Owners of the 2020 Odyssey report: disconnected wire harness. CarComplaints.com lists 2 owner complaints, average mileage 10,250 miles.
NHTSA has 172 owner complaints for the 2020 Odyssey in this area. Examples:
- NHTSA complaint ODI #11770346 (filed 10/10/2026): “On the middle of july, we were driving and all of a sudden all these lights start coming up the brake system warning, collision mitigation ,adaptive cruise control (acc) , lane keeping assist system (lkas), road departure mitigation system, auto high-beam we …”
- NHTSA complaint ODI #11769895 (filed 10/08/2026): “While sitting at light, idle stop engaged and engine stopped - then car lost all power. i was boxed in in heavy traffic and could not move. the car could not be shifted to neutral when i tried to consider how i could get off the road. after a minute or so pow…”
Likely causes
Sources do not establish a single root cause; diagnosis is needed. Owner-reported fixes are listed below.
Fix, in plain English
Most common owner-reported solutions on CarComplaints.com: none clearly reported. Check for open recalls and extended warranty coverage with a dealer before paying out of pocket.
DIY difficulty: Moderate
Finding and splicing chewed wiring is doable with a multimeter and patience but can be time-consuming; harness replacement is pro work. (Our assessment.)
Cost
No sourced cost range: get a written quote after diagnosis.
Typical parts (search links, no affiliate codes)
AutoZone · O'Reilly · Advance · RockAuto
Sources
Page last updated .