Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Emissions - OBD II DTC's And Associated Monitors
2010 Honda Civic L4-1.8L CNGSECTION Emissions - OBD II DTC's And Associated Monitors
03-020
April 2, 2010
Applies To:
All OBD II-equipped models except Passport
OBD II DTCs and Their Associated Monitors
(Supersedes 03-020, dated March 29, 2003, to revise the information marked by the black bars and asterisks)
*REVISION SUMMARY
Numerous DTCs were added. Refer to the list for details.*
Following is a list of all OBD II DTCs and their associated monitors for all Honda automobiles with OBD II. No one model has every DTC in the list.

DTC P0AA6 thru P0A9E

DTC P0A94 thru P0157

DTC P0158 thru P0400

DTC P0401 thru P0562

DTC P0563 thru P0748

DTC P0750 thru P0977

DTC P0979 thru P1193

DTC P1253 thru P1459

DTC P1486 thru P1585

DTC P1586 thru P1678

DTC P1679 thru P1860

DTC P1861 thru P2238

DTC P2240 thru U0073

DTC U0100 thru U1288

Disclaimer
April 2, 2010
Applies To:
All OBD II-equipped models except Passport
OBD II DTCs and Their Associated Monitors
(Supersedes 03-020, dated March 29, 2003, to revise the information marked by the black bars and asterisks)
*REVISION SUMMARY
Numerous DTCs were added. Refer to the list for details.*
Following is a list of all OBD II DTCs and their associated monitors for all Honda automobiles with OBD II. No one model has every DTC in the list.
DTC P0AA6 thru P0A9E
DTC P0A94 thru P0157
DTC P0158 thru P0400
DTC P0401 thru P0562
DTC P0563 thru P0748
DTC P0750 thru P0977
DTC P0979 thru P1193
DTC P1253 thru P1459
DTC P1486 thru P1585
DTC P1586 thru P1678
DTC P1679 thru P1860
DTC P1861 thru P2238
DTC P2240 thru U0073
DTC U0100 thru U1288
Disclaimer
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.