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.
2002-04 Models
2003 Acura NSX 3.2 NA2 Service Manual /"D4" Code) Description P0106 (5) MAP Sensor Range/Performance P0107 (3) MAP Sensor Low Voltage P0108 (3) MAP Sensor High Voltage P0112 (10) IAT Sensor Low Voltage P0113 (10) IAT Sensor High Voltage P0116 (86) ECT Sensor Range/Performance P0117 (6) ECT Sensor Low Voltage P0118 (86) ECT Sensor High Voltage P0122 (7) Throttle Position Sensor Low Voltage P0123 (7) Throttle Position Sensor High Voltage P0125 (86) ECT Sensor Malfunction/Slow Response P0128 (87) Thermostat Range/Performance P0131 (2) Rear Primary Oxygen Sensor Low Voltage P0132 (2) Rear Primary Oxygen Sensor Circuit High Voltage P0133 (62) Rear Primary Heated Oxygen Sensor Range/Performance P0134 (2) Rear Primary Oxygen Sensor Heater P0135 (42) Rear Primary Heated Oxygen Sensor Circuit P0137 (64) Rear Secondary Oxygen Sensor Low Voltage P0138 (64) Rear Secondary Oxygen Sensor High Voltage P0139 (64) Rear Secondary Oxygen Sensor 2 Circuit Slow Response P0141 (66) Rear Secondary Heated Oxygen Sensor Circuit P0151 (1) Front Primary Oxygen Sensor Low Voltage P0152 (1) Front Primary Oxygen Sensor Circuit High Voltage P0153 (61) Front Primary Heated Oxygen Sensor Range/Performance P0154 (1) Front Primary Oxygen Sensor Heater P0155 (41) Front Primary Heated Oxygen Sensor Circuit P0157 (63) Front Secondary Oxygen Sensor Low Voltage P0158 (63) Front Secondary Oxygen Sensor High Voltage P0159 (63) Front Secondary Oxygen Sensor 2 Circuit Slow Response P0161 (65) Front Secondary Heated Oxygen Sensor Circuit P0171 (46) Fuel System Too Lean Rear Bank P0172 (46) Fuel System Too Rich Rear Bank P0174 (45) Fuel System Too Lean Front Bank P0175 (45) Fuel System Too Rich Front Bank P0300 (71, 72, 73, 74, 75, 76 Random Misfire P0325 (53) Rear Knock Sensor P0330 (23) Front Knock Sensor P0335 (4) Crankshaft Position (CKP) Sensor 1 No Signal P0336 (4) Crankshaft Position (CKP) Sensor 1 Intermittent P0345 (4) Crankshaft Position (CKP) Sensor 1 No Signal P0349 (4) Crankshaft Position (CKP) Sensor 1 Intermittent P0390 (9) Cylinder Position (CYP) Sensor 1 No Signal P0394 (9) Cylinder Position (CYP) Sensor 1 Intermittent P0401 (80) EGR System Insufficient Flow P0404 (12) EGR Valve Lift Insufficient P0406 (12) EGR System High Voltage P0410 (60) Air Pump Low Voltage P0411 (60) Air Control Valve Circuit Low Voltage P0420 (68) Rear Catalyst System Efficiency Low P0430 (67) Front Catalyst System Efficiency Low P0451 (91) Fuel Tank Pressure Sensor Range/Performance P0452 (91) Fuel Tank Pressure Sensor Low Voltage P0453 (91) Fuel Tank Pressure Sensor High Voltage P0497 (90) EVAP System Low Purge Flow P0500 (17) Vehicle Speed Sensor Low Voltage P0501 (70) Lock-Up Clutch Does Not Engage P0502 (70) Lock-Up Clutch Does Not Engage P0505 (14) Idle Control System P0506 (14) Idle Control System RPM Lower Than Expected P0507 (14) Idle Control System RPM Higher Than Expected P0560 (34) ECM Backup Circuit Low Voltage P0607 (-) ECM Internal Circuit "A" Or "B" P0630 (139) ECM Internal Circuit Or VIN Not Registered P0700 (70) Indicates TCM DTC Exists P1106 (13) Barometric Pressure Sensor Circuit Range/Performance P1107 (13) Barometric Sensor Low Voltage P1108 (13) Barometric Sensor High Voltage P1128 (5) MAP Sensor Low P1129 (5) MAP Sensor High P1201 (71) Misfire In One Cylinder P1202 (72) Misfire In One Cylinder P1203 (73) Misfire In One Cylinder P1204 (74) Misfire In One Cylinder P1205 (75) Misfire In One Cylinder P1206 (76) Misfire In One Cylinder P1241 (40) Throttle Control Motor Circuit 1 P1242 (40) Throttle Control Motor Circuit 2 P1243 (40) Throttle Position Insufficient P1244 (40) Closed Throttle Position Insufficient P1246 (37) Accelerator Pedal Position Sensor 1 Malfunction P1247 (37) Accelerator Pedal Position Sensor 2 Malfunction P1248 (37) Accelerator Pedal Position Sensor 1 & 2 Incorrect Correlation P1259 (52) Rear VTEC Pressure Switch Or Solenoid Valve (Bank 1) P1279 (52) Front VTEC Pressure Switch Or Solenoid Valve (Bank 2) P1301 (71) Misfire In One Cylinder P1302 (72) Misfire In One Cylinder P1303 (73) Misfire In One Cylinder P1304 (74) Misfire In One Cylinder P1305 (75) Misfire In One Cylinder P1306 (76) Misfire In One Cylinder P1316 (79) Spark Plug Voltage Detection Module (Front Bank 2) P1317 (79) Spark Plug Voltage Detection Module (Rear Bank 1) P1318 (79) Spark Plug Voltage Detection Reset (Bank 1) P1319 (79) Spark Plug Voltage Detection Reset (Bank 2) P1336 (54) Crankshaft Position (CKP) Sensor 2 Intermittent P1336 (54) Crankshaft Position (CKP) Sensor 2 Intermittent P1337 (54) Crankshaft Position (CKP) Sensor 2 No Signal P1337 (54) Crankshaft Position (CKP) Sensor 2 No Signal P1381 (9) Cylinder Position (CYP) Sensor 1 Intermittent P1382 (9) Cylinder Position (CYP) Sensor 1 No Signal P1386 (59) Cylinder Position (CYP) Sensor 2 Intermittent P1386 (59) Cylinder Position (CYP) Sensor 2 Intermittent P1387 (59) Cylinder Position (CYP) Sensor 2 No Signal P1387 (59) Cylinder Position (CYP) Sensor 2 No Signal P1410 (60) Air Control Valve High Voltage P1415 (83) Air Pump Current Sensor Low Voltage P1416 (83) Air Pump Current Sensor High Voltage P1419 (60) Secondary Air Injection System Malfunction P1456 (90) EVAP System Leak (Fuel Tank) P1457 (90) EVAP System Leak (Canister) P1486 (87) Thermostat (Range/Performance) P1491 EGR System P1498 EGR System High Voltage P1607 (-) ECM Internal Circuit "A" Or "B" P1608 (-) ECM Internal Circuit "A" Or "B" P1672 (31) A/T FI Signal "B" Signal Failure P1676 (35) Traction Control System Data Line No Signal P1677 (35) Traction Control System Data Line Failure P2195 (2) Primary Heated Oxygen Sensor Low Voltage (Bank 1) P2197 (2) Primary Heated Oxygen Sensor Low Voltage (Bank 2) P2227 (13) Barometric Pressure Sensor Circuit Range/Performance P2228 (13) Barometric Sensor Low Voltage P2229 (13) Barometric Sensor High Voltage P2279 (109) PCV System Leak P2297 (2) Primary Heated Oxygen Sensor High Voltage (Bank 1) P2298 (2) Primary Heated Oxygen Sensor High Voltage (Bank 2) P2646 (52) VTEC System Malfunction (Bank 1) P2656 (52) VTEC System Malfunction (Bank 2) P2756 (70) Lock-Up Clutch Does Not Engage
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.