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 MANUALSHONDA1998CIVIC DX, 2D COUPE, AUTOMATICREPAIR AND DIAGNOSISQUICK LOOKUPSDTC INDEXENGINE PERFORMANCE DTCS
1998 Honda Civic DX, 2D Coupe, Automatic
Engine Performance DTCS
1998 Honda Civic DX, 2D Coupe, AutomaticSECTION Engine Performance DTCS
ENGINE PERFORMANCE DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION
| DTC (MIL/"D4" Code) | Description |
|---|---|
| P0107 (3) | MAP Sensor Circuit Low Voltage Input |
| P0108 (3) | MAP Sensor Circuit High Voltage Input |
| P0112 (10) | IAT Sensor Circuit Low Voltage Input |
| P0113 (10) | IAT Sensor Circuit High Voltage Input |
| P0116 (86) | ECT Sensor Circuit Range/Performance Problem |
| P0117 (6) | ECT Sensor Circuit Low Voltage Input |
| P0118 (6) | ECT Sensor Circuit High Voltage Input |
| P0122 (7) | Throttle Position Sensor Circuit Low Voltage Input |
| P0123 (7) | Throttle Position Sensor Circuit High Voltage Input |
| P0131 (1) | Primary HO2S-1 Low Voltage Input (Except D16Y5 engine manual transaxle) |
| P0132 (1) | Primary HO2S-1 High Voltage Input (Except D16Y5 engine manual transaxle) |
| P0133 (61) | Primary HO2S-1 Slow Response (Except D16Y5 engine manual transaxle) |
| P0135 (41) | Primary HO2S-1 Heater Circuit Malfunction (Except D16Y5 engine manual transaxle) |
| P0137 (63) | Secondary HO2S-2 Low Voltage Input |
| P0138 (63) | Secondary HO2S-2 High Voltage Input |
| P0139 (63) | Secondary HO2S-2 Slow Response |
| P0141 (65) | Secondary HO2S-2 Heater Circuit Malfunction |
| P0171 (45) | System Too Lean |
| P0172 (45) | System Too Rich |
| P0300 (71-74) | Random Misfire Detected |
| P0301 (71) | Cylinder No. 1 Misfire Detected |
| P0302 (72) | Cylinder No. 2 Misfire Detected |
| P0303 (73) | Cylinder No. 3 Misfire Detected |
| P0304 (74) | Cylinder No. 4 Misfire Detected |
| P0325 (23) | Knock Sensor (KS) Circuit Malfunction (B16A2 engine, D16Y5 engine with CVT and D16Y8 engine) |
| P0335 (4) | CKP Sensor Circuit Malfunction |
| P0336 (4) | CKP Sensor Circuit Range/Performance Problem |
| P0401 (80) | EGR Insufficient Flow Detected (D16Y5 engine) |
| P0420 (67) | Catalyst System Efficiency Below Threshold |
| P0451 (91) | Fuel Tank Pressure Sensor Circuit Range/Performance Problem |
| P0452 (91) | Fuel Tank Pressure Sensor Circuit Low Voltage Input |
| P0453 (91) | Fuel Tank Pressure Sensor Circuit High Voltage Input |
| P0500 (17) | Vehicle Speed Sensor (VSS) Circuit Malfunction (Except D16Y7 and D16Y8 engines with automatic transaxle) |
| P0501 (17) | VSS Circuit Range/Performance Problem (D16Y7 and D16Y8 engines with automatic transaxle) |
| P0505 (14) | Idle Control System Malfunction |
| P1106 (13) | BARO Sensor Circuit Range/Performance Problem |
| P1107 (13) | BARO Sensor Circuit Low Voltage Input |
| P1108 (13) | BARO Sensor Circuit High Voltage Input |
| P1121 (7) | Throttle Position Lower Than Expected |
| P1122 (7) | Throttle Position Higher Than Expected |
| P1128 (5) | Manifold Absolute Pressure Lower Than Expected |
| P1129 (5) | Manifold Absolute Pressure Higher Than Expected |
| P1162 (48) | Primary HO2S-1 Circuit Malfunction (D16Y5 engine with manual transaxle) |
| P1163 (61) | Primary HO2S-1 Circuit Slow Response (D16Y5 engine with manual transaxle) |
| P1164 (61) | Primary HO2S-1 Circuit Range/Performance Problem (D16Y5 engine with manual transaxle) |
| P1165 (61) | Primary HO2S-1 Circuit Range/Performance Problem (D16Y5 engine with manual transaxle) |
| P1166 (41) | Primary HO2S-1 Heater Circuit Electrical Malfunction (D16Y5 engine with manual transaxle) |
| P1167 (41) | Primary HO2S-1 Heater System Malfunction (D16Y5 engine with manual transaxle) |
| P1168 (48) | Primary HO2S-1 LABEL Low Voltage Input (D16Y5 engine with manual transaxle) |
| P1169 (48) | Primary HO2S-1 LABEL High Voltage Input (D16Y5 engine with manual transaxle) |
| P1259 (22) | VTEC System Malfunction (D16Y5 and D16Y8 engines) |
| P1297 (20) | Electrical Load Detector Circuit Low Voltage Input |
| P1298 (20) | Electrical Load Detector Circuit High Voltage Input |
| P1336 (54) | CKF Sensor Circuit Intermittent Interruption |
| P1337 (54) | CKF Sensor Circuit No Signal |
| P1359 (8) | CKP/TDC/CYP Sensor Connector Poor Connection |
| P1361 (8) | TDC Sensor Circuit Intermittent Interruption |
| P1362 (8) | TDC Sensor Circuit No Signal |
| P1381 (9) | CYP Sensor Circuit Intermittent Interruption |
| P1382 (9) | CYP Sensor Circuit No Signal |
| P1456 (90) | EVAP System Leak Detected (Fuel Tank System) |
| P1457 (90) | EVAP System Leak Detected (Canister System) |
| P1491 (12) | EGR Valve Insufficient Lift Detected (D16Y5 engine with manual transaxle) |
| P1498 (12) | EGR Valve Lift Sensor Circuit High Voltage Input (D16Y5 engine with manual transaxle) |
| P1508 (14) | Idle Air Control Valve Circuit Failure (Except D16Y7 engine with automatic transaxle) |
| P1509 (14) | Idle Air Control Valve Circuit Failure (D16Y7 engine with automatic transaxle) |
| P1607 (-) | PCM Internal Failure "A" |
RENDER: 1.0x
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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.