Check Engine Light|OBD-II Trouble Codes
2020 HONDA Accord OBD Codes
Real-world fixes and diagnostics from 2020 HONDA Accord owners. Each code page includes owner experiences, common causes, and proven solutions.
6
Codes Reported
36
Discussions
8%
Fix Success Rate
Reported OBD Codes
P0420
P0420 on 2020 HONDA Accord
Symptoms: vacuum leak, stalling, carbon buildup
💬17 discussions✅2 fixed (12% success)Latest: 1/6/2026
P0325
P0325 on 2020 HONDA Accord
Symptoms: power loss/hesitation, jerking, shuddering
💬4 discussions✅1 fixed (25% success)Latest: 12/5/2025
P0161
P0161 on 2020 HONDA Accord
Symptoms: poisoned, excessive heat, overheated
💬5 discussionsLatest: 6/29/2025
P2647
P2647 on 2020 HONDA Accord
Symptoms: crud speckles
💬4 discussionsLatest: 4/10/2024
P2651
P2651 on 2020 HONDA Accord
Symptoms: oil pressure, misfires
💬3 discussionsLatest: 12/1/2025
U0122
U0122 on 2020 HONDA Accord
💬3 discussionsLatest: 1/19/2026