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.
1995 Acura 2.5TLFACTORY OEM SERVICE PROCEDURE
Trouble Code Identification
NOTE:
To identify trouble codes, see TROUBLE CODE IDENTIFICATION .
TROUBLE CODE IDENTIFICATION
| Code | Probable Cause | ||
|---|---|---|---|
| P0101 | MAF Sensor Range/Performance Problem | ||
| P0102 | MAF Circuit Low Input | ||
| P0103 | MAF Circuit High Input | ||
| P0112 | IAT Circuit Low Input | ||
| P0113 | IAT Circuit High Input | ||
| P0116 | ECT Sensor Range/Performance Problem | ||
| P0117 | ECT Circuit Low Input | ||
| P0118 | ECT Circuit High Input | ||
| P0122 | Throttle Position Circuit Low Input | ||
| P0123 | Throttle Position Circuit High Input | ||
| P0130 | Primary HO2S Circuit Malfunction | ||
| P0133 | Primary HO2S Slow Response | ||
| P0135 | Primary HO2S Heater Circuit Malfunction | ||
| P0139 | Secondary HO2S Slow Response | ||
| P0141 | Secondary HO2S Heater Circuit Malfunction | ||
| P0171 | System Too Lean | ||
| P0172 | System Too Rich | ||
| P0300 | Random Misfire Detected | ||
| P0301 | Cylinder No. 1 Misfire Detected | ||
| P0302 | Cylinder No. 2 Misfire Detected | ||
| P0303 | Cylinder No. 3 Misfire Detected | ||
| P0304 | Cylinder No. 4 Misfire Detected | ||
| P0305 | Cylinder No. 5 Misfire Detected | ||
| P0327 | Front Knock Sensor Circuit Low Input | ||
| P0328 | Front Knock Sensor Circuit High Input | ||
| P0332 | Rear Knock Sensor Circuit Low Input | ||
| P0333 | Rear Knock Sensor Circuit High Input | ||
| P0335 | Crankshaft Position Sensor Circuit Low Input | ||
| P0336 | Crankshaft Position Sensor Circuit Range/Performance | ||
| P0401 | Exhaust Gas Recirculation Insufficient Flow Detected | ||
| P0420 | Catalyst System Efficiency Below Threshold | ||
| P0441 | Evaporative Emission Control System Incorrect Purge Flow | ||
| P0500 | Vehicle Speed Sensor Circuit Low Input | ||
| P0505 | Idle Control System Malfunction | ||
| P0715 (1) | Automatic Transaxle | ||
| P0720 (1) | Automatic Transaxle | ||
| P0725 (1) | Automatic Transaxle | ||
| P0730 (1) | Automatic Transaxle | ||
| P0740 (1) | Automatic Transaxle | ||
| P0753 (1) | Automatic Transaxle | ||
| P0758 (1) | Automatic Transaxle | ||
| P1107 | Barometric Pressure Circuit Low Input | ||
| P1108 | Barometric Pressure Circuit High Input | ||
| P1297 | Electrical Load Detector Circuit Low Input | ||
| P1298 | Electrical Load Detector Circuit High Input | ||
| P1336 | Crankshaft Speed Fluctuation Sensor Intermittent Interruption | ||
| P1337 | Crankshaft Speed Fluctuation Sensor No Signal | ||
| P1359 | CKP/TDC Sensor Circuit Disconnected | ||
| P1361 | TDC Sensor Intermittent Interruption | ||
| P1362 | TDC Sensor No Signal | ||
| P1381 | CYP Sensor Intermittent Interruption | ||
| P1382 | CYP Sensor No Signal | ||
| P1459 | Evaporative Emission Purge Flow Switch Malfunction | ||
| P1491 | Insufficient EGR Valve Lift Detected | ||
| P1498 | EGR Valve Lift Sensor High Voltage | ||
| P1508 | IAC Valve Circuit Failure | ||
| P1660 | A/T FI Data Line Failure | ||
| P1681 | A/T FI Signal A Low Input | ||
| P1682 | A/T FI Signal A High Input | ||
| P1686 | A/T FI Signal B Low Input | ||
| P1687 | A/T FI Signal B High Input | ||
| P1705 (1) | Automatic Transaxle | ||
| P1706 (1) | Automatic Transaxle | ||
| P1753 (1) | Automatic Transaxle | ||
| P1758 (1) | Automatic Transaxle | ||
| P1768 (1) | Automatic Transaxle | ||
| P1786 (1) | Automatic Transaxle | ||
| P1787 (1) | Automatic Transaxle | ||
| P1790 (1) | Automatic Transaxle | ||
| P1791 (1) | Automatic Transaxle | ||
| P1792 (1) | Automatic Transaxle | ||
| P1794 (1) | Automatic Transaxle | ||
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Factory Service Tools
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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.