Live Data
Last reported case: 2 months ago
Based on 6 owner reports, 6 from forums)
🚗P2646 on 2020 HONDA Accord
This page focuses specifically on P2646 issues reported by 2020 HONDA Accord owners. The experiences and fixes below are from real owners of this exact vehicle.
Parts Often Involved:
cam sensorscylinder headgasketoil control valvespool valvevariable valve timing oil pressure switchvtec oil pressure switchvvt oil pressure switch
What Owners Say
Real experiences from 2020 HONDA Accord owners
Cost Reportvia forum_post
“I probably could of replaced just the VVT Oil Pressure Switch but that thing alone is $59 so for $10 more why not replace the entire thing.. It was a super easy fix.”View original
Experiencevia forum_reply
“Ahh makes sense - so replacing that is likely what fixed P2646, although it sounds like you needed that timing job too. Last spool valve I replaced was a redo job because the first replacement didn't fix the issue.”View original
Experiencevia forum_reply
“Last spool valve I replaced was a redo job because the first replacement didn't fix the issue. The parts website sent the guy a replacement, and when I installed it the code went away.”View original
Cost Reportvia forum_post
“The replacement unit was complete with the VTEC solenoid, Variable Valve Timing Oil Pressure Switch, Oil Control Valve, Heat Shield and Gasket. If anybody is interested I used the following part from AutoZone: Part #TS1147 SKU #526278 Retails for $79 but if you sign up you get a $10 off coupon so out the door it was $69 plus tax.”View original
Experiencevia forum_post
“This has happened before, but quite a while ago. It was 8:55pm and I was leaving Phoenix for Flagstaff work in the am, 150miles away. 1/2 mile down the street was an autozone.”View original
Experiencevia forum_post
“I read the code and it gave me a P2646 code. I researched and think this is the part number I need: 37250-PNE-G01 Just want to confirm that this is correct before I buy one.”View original
Experiencevia forum_post
“So, two months ago I replaced the VTEC oil pressure switch on the spool as it had failed and gave a P2646 code. This has happened before, but quite a while ago.”View original
Experiencevia forum_reply
“I got both of the cam sensors and o2 sensors in and I went from having 6 codes to 2 the codes i got now are p1157 and p2646 the car runs fine up until its warmed up then starts acting up again”View original
Experiencevia forum_reply
“Hey - I just replied to another thread regarding this CEL code. Search "P2646 Code.”View original
Experiencevia forum_reply
“How do you decide..." The forum won't let me post URL/links yet because I'm still a noob.”View original
These are real experiences shared by 2020 HONDA Accord owners on automotive forums and communities. Results may vary based on vehicle condition and repair quality.
About This Data
This page aggregates 6 discussions about P2646 from 2020 HONDA Accord owners across automotive communities.
Success rate (17%) is calculated from posts where owners confirmed whether their fix resolved the issue.
Last updated: 12/27/2025