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.
1997 Acura 3.0CLFACTORY OEM SERVICE PROCEDURE
Diagnostic Trouble Code Identification
DIAGNOSTIC TROUBLE CODE (DTC) TEST DIRECTORY
| DTC (1)(MIL/"D4" Code) (2) | System Affected | ||||
|---|---|---|---|---|---|
| P0107 (3) | MAP Sensor Low Input Voltage | ||||
| P0108 (3) | MAP Sensor High Input Voltage | ||||
| P0111 (10) | Intake Air Temperature (IAT) Sensor Range/Performance | ||||
| P0112 (10) | IAT Sensor Low Input Voltage | ||||
| P0113 (10) | IAT Sensor High Input Voltage | ||||
| P0116 (86) | Engine Coolant Temperature (ECT) Sensor Range/Performance | ||||
| P0117 (6) | ECT Sensor Low Input Voltage | ||||
| P0118 (6) | ECT Sensor High Input Voltage | ||||
| P0122 (7) | Throttle Position (TP) Sensor Low Input Voltage | ||||
| P0123 (7) | TP Sensor High Input Voltage | ||||
| P0131 (1) | Primary HO2S-1 Circuit Low Voltage | ||||
| P0132 (1) | Primary HO2S-1 Circuit High Voltage | ||||
| P0133 (61) | Primary HO2S-1 Slow Response | ||||
| P0135 (41) | Primary HO2S-1 Heater Circuit Malfunction | ||||
| P0137 (63) | Secondary HO2S-2 Circuit Low Voltage | ||||
| P0138 (63) | Secondary HO2S-2 Circuit High Voltage | ||||
| 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 | ||||
| P0301 (71) | Misfire Cylinder No. 1 Detected | ||||
| P0302 (72) | Misfire Cylinder No. 2 Detected | ||||
| P0303 (73) | Misfire Cylinder No. 3 Detected | ||||
| P0304 (74) | Misfire Cylinder No. 4 Detected | ||||
| P0305 (75) | Misfire Cylinder No. 5 Detected | ||||
| P0306 (76) | Misfire Cylinder No. 6 Detected | ||||
| P0335 (4) | Crankshaft Position (CKP) Sensor Circuit Malfunction | ||||
| P0336 (4) | CKP Sensor Range/Performance | ||||
| P0401 (80) | EGR System Insufficient Flow Detected | ||||
| P0420 (67) | Catalyst System Efficiency Below Threshold | ||||
| P0452 (91) | Fuel Tank Pressure Sensor Circuit Low Input Voltage | ||||
| P0453 (91) | Fuel Tank Pressure Sensor Circuit High Input Voltage | ||||
| P0500 (17) | VSS Circuit Malfunction | ||||
| P0505 (14) | Idle Control System Malfunction | ||||
| P1106 (13) | Barometric Pressure (BARO) Circuit Range/Performance | ||||
| P1107 (13) | BARO Circuit Low Input Voltage | ||||
| P1108 (13) | BARO Circuit High Input Voltage | ||||
| P1121 (7) | Throttle Position (TP) Lower Than Excepted | ||||
| P1122 (7) | TP Higher Than Excepted | ||||
| P1128 (5) | Manifold Absolute Pressure Lower Than Excepted | ||||
| P1129 (5) | Manifold Absolute Pressure Higher Than Excepted | ||||
| P1259 (22) | VTEC System Malfunction | ||||
| P1297 (20) | Electrical Load Detector (ELD) Low Voltage Input | ||||
| P1298 (20) | ELD High Voltage Input | ||||
| P1300 (71, 72, 73, 74, 75 And/Or 76) | Random Misfire | ||||
| P1361 (8) | TDC-1 Sensor Intermittent Interruption | ||||
| P1362 (8) | TDC-1 Sensor No Signal | ||||
| P1366 (58) | TDC-2 Sensor Intermittent Interruption | ||||
| P1367 (58) | TDC-2 Sensor No Signal | ||||
| P1456 (90) | EVAP System Leak Detected (Fuel Tank System) | ||||
| P1457 (90) | EVAP System Leak Detected (EVAP Control Canister System) | ||||
| P1491 (12) | EGR Valve Lift Insufficient Detected | ||||
| P1498 (12) | EGR Valve Lift Sensor High Voltage | ||||
| P1519 (14) | Idle Air Control (IAC) Valve Circuit Failure | ||||
| P1607 (-) | PCM Internal Failure | ||||
| P1655 (30/37) | SEAF/SEFA Signal Line Failure | ||||
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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.