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.
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HOMESERVICE MANUALSHONDA2003CIVIC HX, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT VARIANT/TRIMSECTION 16 (PGM-FI SYSTEM (HATCHBACK))DTC TROUBLESHOOTINGNOTES
2003 Honda Civic HX, Standard
DTC Troubleshooting: Notes
2003 Honda Civic HX, StandardSECTION Notes
WARNING: This page is about a different variant/trim than selected.
DTC INDEX
| DTC | Description |
|---|---|
| DTC P0107 | MAP Sensor Circuit Low Voltage |
| DTC P0108 | MAP Sensor Circuit High Voltage |
| DTC P1128 | MAP Sensor Signal Lower Than Expected |
| DTC P1129 | MAP Sensor Signal Higher Than Expected |
| DTC P0112 | IAT Sensor Circuit Low Voltage |
| DTC P0113 | IAT Sensor Circuit High Voltage |
| DTC P0116 | ECT Sensor Range/Performance Problem |
| DTC P0117 | ECT Sensor Circuit Low Voltage |
| DTC P0118 | ECT Sensor Circuit High Voltage |
| DTC P0122 | TP Sensor Circuit Low Voltage |
| DTC P0123 | TP Sensor Circuit High Voltage |
| DTC P1121 | TP Sensor Signal Lower Than Expected |
| DTC P1122 | TP Sensor Signal Higher Than Expected |
| DTC P0125 | ECT Sensor Malfunction/Slow Response |
| DTC P0128 | Cooling System Malfunction |
| DTC P0133 | A/F Sensor (Sensor 1) Slow Response |
| DTC P0134 | A/F Sensor (Sensor 1) No Activity Detected |
| DTC P0135 | A/F Sensor (Sensor 1) Heater Circuit Malfunction |
| DTC P0137 | Secondary HO2S (Sensor 2) Circuit Low Voltage |
| DTC P0138 | Secondary HO2S (Sensor 2) Circuit High Voltage |
| DTC P0139 | Secondary HO2S (Sensor 2) Slow Response |
| DTC P0141 | Secondary HO2S (Sensor 2) Heater Circuit Malfunction |
| DTC P0171 | Fuel System Too Lean DTC P0172:Fuel System Too Rich |
| DTC P0172 | Fuel System Too Rich |
| DTC P0300 | Random Misfire and Any Combination of the Following: DTC P0301:No.1 Cylinder Misfire Detected DTC P0302:No.2 Cylinder Misfire Detected DTC P0303:No.3 Cylinder Misfire Detected DTC P0304:No.4 Cylinder Misfire Detected |
| DTC P0301 | No. 1 Cylinder Misfire Detected |
| DTC P0302 | No. 2 Cylinder Misfire Detected |
| DTC P0303 | No. 3 Cylinder Misfire Detected |
| DTC P0304 | No. 4 Cylinder Misfire Detected |
| DTC P0325 | Malfunction in Knock Sensor Circuit |
| DTC P0335 | CKP Sensor No Signal |
| DTC P0336 | CKP Sensor Intermittent Interruption |
| DTC P0339 | CKP Sensor Intermittent Interruption |
| DTC P0365 | CMP Sensor B No Signal |
| DTC P0369 | CMP Sensor B Intermittent Interruption |
| DTC P0500 | VSS Circuit Malfunction |
| DTC P0563 | ECM Power Source Circuit Unexpected Voltage |
| DTC P0607 | Malfunction in ECM Internal Circuit |
| DTC P1106 | BARO Sensor Range/Performance Problem |
| DTC P1107 | BARO Sensor Circuit Low Voltage |
| DTC P1108 | BARO Sensor Circuit High Voltage |
| DTC P1157 | A/F Sensor (Sensor 1) Circuit High Voltage |
| DTC P1158 | A/F Sensor (Sensor 1) AFS Terminal Low Voltage |
| DTC P1159 | A/F Sensor (Sensor 1) AFS + Terminal Low Voltage |
| DTC P1163 | A/F Sensor (Sensor 1) Slow Response |
| DTC P1164 | A/F Sensor (Sensor 1) Circuit Range/Performance Problem |
| DTC P1166 | A/F Sensor (Sensor 1) Heater Circuit Malfunction |
| DTC P1167 | A/F Sensor (Sensor 1) Heater Circuit Malfunction |
| DTC P1297 | ELD Circuit Low Voltage |
| DTC P1298 | ELD Circuit High Voltage |
| DTC P1361 | CMP Sensor B Intermittent Interruption |
| DTC P1362 | CMP Sensor B No Signal |
| DTC P2227 | BARO Sensor Range/Performance Problem |
| DTC P2228 | BARO Sensor Circuit Low Voltage |
| DTC P2229 | BARO Sensor Circuit High Voltage |
| DTC P2238 | A/F Sensor (Sensor 1) AFS + Terminal Low Voltage |
| DTC P2252 | A/F Sensor (Sensor 1) AFS Terminal Low Voltage |
| DTC P2A00 | A/F Sensor (Sensor 1) Circuit Range/Performance Problem |
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.