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.
12
Codes Reported
71
Discussions
8%
Fix Success Rate
Reported OBD Codes
P0420
P0420 on 2020 HONDA Accord
Symptoms: anomalies, burning oil, carbon buildup
💬27 discussions✅2 fixed (7% success)Latest: 1/6/2026
P2646
P2646 on 2020 HONDA Accord
💬6 discussions✅1 fixed (17% success)Latest: 12/27/2025
P0171
P0171 on 2020 HONDA Accord
Symptoms: fuel smell, vacuum leaks
💬5 discussions✅1 fixed (20% success)Latest: 9/3/2023
P0325
P0325 on 2020 HONDA Accord
Symptoms: power loss/hesitation, jerking, shuddering
💬4 discussions✅1 fixed (25% success)Latest: 12/5/2025
P0717
P0717 on 2020 HONDA Accord
💬3 discussions✅1 fixed (33% success)Latest: 7/14/2021
P2647
P2647 on 2020 HONDA Accord
Symptoms: crud speckles
💬5 discussionsLatest: 4/10/2024
P0161
P0161 on 2020 HONDA Accord
Symptoms: poisoned, excessive heat, overheated
💬5 discussionsLatest: 6/29/2025
P2367
P2367 on 2020 HONDA Accord
💬4 discussionsLatest: 4/9/2022
P2422
P2422 on 2020 HONDA Accord
💬3 discussionsLatest: 7/13/2015
U0122
U0122 on 2020 HONDA Accord
💬3 discussionsLatest: 1/19/2026
P0139
P0139 on 2020 HONDA Accord
💬3 discussionsLatest: 12/17/2020
P2651
P2651 on 2020 HONDA Accord
Symptoms: oil pressure, misfires
💬3 discussionsLatest: 12/1/2025