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.
1996 Acura SLXFACTORY OEM SERVICE PROCEDURE
Diagnostic Trouble Code Definitions
NOTE:
If any DTCs not listed here are displayed by a scan tool, the scan tool data may be faulty. Notify the scan tool manufacturer of any DTCs displayed that are not included in the following.
DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION
| DTC/Type | Component/System | Most Likely Cause | ||||||
|---|---|---|---|---|---|---|---|---|
| P0101 /B | MAF Sensor Circuit Range/Performance Problem | MAF Sensor | ||||||
| P0102 /A | MAF Sensor Circuit Low Frequency | Open/Short, MAF Sensor Or PCM | ||||||
| P0103 /A | MAF Sensor Circuit High Frequency | Open/Short, MAF Sensor Or PCM | ||||||
| P0106 /A | MAP Sensor Circuit Range/Performance Problem | MAP Sensor | ||||||
| P0107 /A | MAP Sensor Circuit Low Frequency | Open/Short, MAP Sensor Or PCM | ||||||
| P0108 /A | MAP Sensor Circuit High Frequency | Open, MAP Sensor Or PCM | ||||||
| P0112 /A | IAT Sensor Circuit Low Frequency | Short, IAT Sensor Or PCM | ||||||
| P0113 /A | IAT Sensor Circuit High Frequency | Open, IAT Sensor Or PCM | ||||||
| P0117 /A | ECT Sensor Circuit Low Frequency | Short, ECT Sensor Or PCM | ||||||
| P0118 /A | ECT Sensor Circuit High Frequency | Open, ECT Sensor Or PCM | ||||||
| P0121 /A | TP Sensor Circuit Range/Performance Problem | TP Sensor Or PCM | ||||||
| P0122 /A | TP Sensor Circuit Low Frequency | Open/Short, TP Sensor Or PCM | ||||||
| P0123 /A | TP Sensor Circuit High Frequency | Open Circuit, TP Sensor Or PCM | ||||||
| P0125 /B | ECT Sensor Circuit Excessive Warm-Up Time To Closed Loop | Cooling System, ECT Or PCM | ||||||
| P0131 /A | Bank 1 Primary HO2S Circuit Low Voltage | Short, HO2S Sensor, Fuel Supply Or PCM | ||||||
| P0132 /A | Bank 1 Primary HO2S Circuit High Voltage | Open, HO2S Sensor Or PCM | ||||||
| P0133 /B | Bank 1 Primary HO2S Slow Response | HO2S Sensor Or Exhaust System | ||||||
| P0134 /A | Bank 1 Primary HO2S Insufficient Activity | Poor Connections, HO2S Sensor Or PCM | ||||||
| P0135 /B | Bank 1 Primary HO2S Heater Circuit Malfunction | Open/Short Or PCM | ||||||
| P0137 /A | Bank 1 Secondary HO2S Circuit Low Voltage | Short, HO2S Or PCM | ||||||
| P0138 /A | Bank 1 Secondary HO2S Circuit High Voltage | Open, HO2S Or PCM | ||||||
| P0140 /A | Bank 1 Secondary HO2S Ckt. Insufficient Activity | Short In Circuit, HO2S Or PCM | ||||||
| P0141 /B | Bank 1 Secondary HO2S Circuit Malfunction | Open/Short In Heater Circuit Or PCM | ||||||
| P0143 /A | Bank 1 Secondary HO2S Low Voltage (M/T Only) | Short, HO2S Or PCM | ||||||
| P0144 /A | Bank 1 Secondary HO2S High Voltage (M/T Only) | Open/Short, HO2S Or PCM | ||||||
| P0146 /A | Bank 1 Secondary HO2S Insufficient Activity (M/T Only) | Short, HO2S Or PCM | ||||||
| P0147 /B | Bank 1 Secondary HO2S Heater Circuit (M/T Only) | Short Or HO2S | ||||||
| P0151 /A | Bank 2 Secondary HO2S Circuit Low Voltage | Short Or PCM | ||||||
| P0152 /A | Bank 2 Secondary HO2S Circuit High Voltage | Short, HO2S Or PCM | ||||||
| P0153 /B | Bank 2 Secondary HO2S Circuit Slow Response | Open/Short, HO2S Contamination Or PCM | ||||||
| P0154 /A | Bank 2 Secondary HO2S Insufficient Activity | HO2S Or PCM | ||||||
| P0155 /B | Bank 2 Secondary HO2S Heater Circuit | Short Or HO2S | ||||||
| P0157 /A | Bank 2 Secondary HO2S Circuit Low Voltage (A/T Only) | Short Or PCM | ||||||
| P0158 /A | Bank 2 Secondary HO2S Ckt. High Voltage (A/T Only) | Short, HO2S Or PCM | ||||||
| P0160 /A | Bank 2 Secondary HO2S Circuit Insufficient Activity (A/T Only) | Short, HO2S Or PCM | ||||||
| P0161 /B | Bank 2 Secondary HO2S Heater Circuit Malfunction (A/T Only) | Short Or HO2S | ||||||
| P0171 /B | Bank 1 System Too Lean | Fuel Supply/Contamination, Primary HO2S, MAP, Leaking Exhaust Or Valve Clearance | ||||||
| P0172 /B | Bank 1 System Too Rich | Fuel Supply, Primary HO2S, MAP Sensor, Fuel Contamination Or Valve Clearance | ||||||
| P0174 /B | Bank 2 System Too Lean | Air Intake System, MAF Sensor, Fuel Supply Or Exhaust System | ||||||
| P0175 /B | Bank 2 System Too Rich | Air Intake System, MAF Sensor, Fuel Supply Or TP Sensor | ||||||
| P0201 /A | Injector No. 1 Circuit Malfunction | Open/Short Or PCM | ||||||
| P0202 /A | Injector No. 2 Circuit Malfunction | Open/Short Or PCM | ||||||
| P0203 /A | Injector No. 3 Circuit Malfunction | Open/Short Or PCM | ||||||
| P0204 /A | Injector No. 4 Circuit Malfunction | Open/Short Or PCM | ||||||
| P0205 /A | Injector No. 5 Circuit Malfunction | Open/Short Or PCM | ||||||
| P0206 /A | Injector No. 6 Circuit Malfunction | Open/Short Or PCM | ||||||
| P0218/D (1) | Transmission High Temp. Condition (A/T Only) | Miscellaneous | ||||||
| P0300 /B | Random Misfire Detected | Ignition System, Fuel Supply, MAP Sensor, EGR System, IAC Valve Or Contaminated Fuel | ||||||
| P0301 /B | Cylinder No. 1 Misfire Detected | Miscellaneous | ||||||
| P0302 /B | Cylinder No. 2 Misfire Detected | Miscellaneous | ||||||
| P0303 /B | Cylinder No. 3 Misfire Detected | Miscellaneous | ||||||
| P0304 /B | Cylinder No. 4 Misfire Detected | Miscellaneous | ||||||
| P0305 /B | Cylinder No. 5 Misfire Detected | Miscellaneous | ||||||
| P0306 /B | Cylinder No. 6 Misfire Detected | Miscellaneous | ||||||
| P0325 /A | Knock Sensor (KS) Circuit Malfunction | PCM | ||||||
| P0327 /A | KS Circuit | Open/Short, KS Or PCM | ||||||
| P0336 /B | CKP Sensor Range/Performance | CKP Sensor, Valve Timing Or Timing Belt Skipped Teeth | ||||||
| P0337 /B | CKP Circuit Low Frequency | Open/Short, CKP Sensor Or PCM | ||||||
| P0341 /A | CKP Circuit Performance | Open/Short, CKP Sensor, Faulty Or Missing CKP Magnet Or PCM | ||||||
| P0342 /A | CKP Sensor Low Frequency | CKP Sensor/ Magnet Or PCM | ||||||
| P0351 /A | Ignition Coil 1 Circuit | Ignition Control Module (ICM), Open/Short Or PCM | ||||||
| P0352 /A | Ignition Coil 2 Circuit | Miscellaneous | ||||||
| P0353 /A | Ignition Coil 3 Circuit | Miscellaneous | ||||||
| P0354 /A | Ignition Coil 4 Circuit | Miscellaneous | ||||||
| P0355 /A | Ignition Coil 5 Circuit | Miscellaneous | ||||||
| P0356 /A | Ignition Coil 6 Circuit | Miscellaneous | ||||||
| P0401 /A | Insufficient EGR Flow Detected | EGR Valve Or Line | ||||||
| P0420 /A | Bank 1 Catalyst System Efficiency Below Threshold | Catalytic Converter Or Secondary HO2S | ||||||
| P0430 /A | Bank 2 Catalyst System Efficiency Below Threshold (A/T Only) | Catalytic Converter Or Secondary HO2S | ||||||
| P0440 /A | EVAP System | Canister Purge Valve, Vent Solenoid Or Hoses | ||||||
| P0441 /B | (2) Evaporative Emission Control System, Incorrect Purge Flow | EVAP Canister, Vacuum Switch, Purge Solenoid Or PCM | ||||||
| P0502 /A | VSS Circuit Low Frequency | Open/Short, VSS Or PCM | ||||||
| P0506 /B | Idle Control System Low RPM | IAC Valve Or PCM | ||||||
| P0507 /B | Idle Control System High RPM | IAC Valve Or PCM | ||||||
| P0560/D (1) | System Voltage Malfunction (A/T Only) | Miscellaneous | ||||||
| P0562 /D | System Voltage Low | Open Or PCM | ||||||
| P0563 /D | System Voltage High | PCM | ||||||
| P0601 /A | Powertrain Control module (PCM) Memory Check Sum Error | PCM | ||||||
| P0700/D (1) | Automatic Transaxle | Miscellaneous | ||||||
| P0705/D (1) | Transmission Range Sensor Circuit Malfunction | Miscellaneous | ||||||
| P0706/D (1) | Transmission Range Sensor Rationality | Miscellaneous | ||||||
| P0712/D (1) | Transmission Fluid Temperature Low Voltage | Miscellaneous | ||||||
| P0713/D (1) | Transmission Fluid Temperature High Voltage | Miscellaneous | ||||||
| P0715/D (1) | Transmission Jerks Hard When Shifting (A/T) | Open/Short In Mainshaft Speed Sensor Circuit Or Faulty Mainshaft Speed Sensor | ||||||
| P0719/D (1) | Brake Switch Circuit Low | Miscellaneous | ||||||
| P0720/D (1) | Lock-up Clutch Does Not Engage (A/T) | Open Or Short In Countershaft Speed Sensor Circuit Or Faulty Countershaft Speed Sensor | ||||||
| P0722/A (1) | Output Speed Sensor Circuit No Signal | Miscellaneous | ||||||
| P0723/A (1) | Output speed Sensor Circuit Intermittent Signal | Miscellaneous | ||||||
| P0724/D (1) | Brake Switch Circuit High | Miscellaneous | ||||||
| P0730/C (1) | Wont Shift Between 1/2nd, 2/3rd, 2/4th. Stuck in 1st Or 4th gears (A/T) | Faulty Shift Control System | ||||||
| P0740 (1) | Lock-up clutch does not engage/disengage, Unstable Idle Speed (A/T) | Faulty Lock-up Control System | ||||||
| P0742/A (1) | Torque Converter Clutch Circuit Stuck On | Miscellaneous | ||||||
| P0748/C (1) | Transmission Pressure Control Solenoid Electrical Circuit Fault | Miscellaneous | ||||||
| P0751/B (1) | Transmission Shift Solenoid "A" Performance Or Stuck Off (A/T Only) | Miscellaneous | ||||||
| P0753/A (1) | Transmission Shift Solenoid "A"- Electrical Circuit Fault | Open/Short In Ckt. Or Faulty Solenoid | ||||||
| P0756/B (1) | Transmission Shift Solenoid "B" Performance Stuck Off (A/T Only) | Miscellaneous | ||||||
| P0758/A (1) | Transmission Shift Solenoid "B" - Electrical Circuit Fault | Open/Short In Circuit Or Faulty Solenoid | ||||||
| P1106 /D | MAP Circuit Intermittent High Voltage | Open/Short In Circuit | ||||||
| P1107 /D | MAP/Barometric Pressure Circuit Low Voltage | Intermittent Open/Short Or PCM | ||||||
| P1111 /D | IAT Circuit Intermittent High Voltage | Poor Ground/Open Circuit | ||||||
| P1112 /D | IAT Circuit Intermittent Low Voltage | Short In Circuit | ||||||
| P1114 /D | ECT Circuit Intermittent Low Voltage | Intermittent Short | ||||||
| P1115 /D | ECT Circuit Intermittent High Voltage | Poor PCM Ground Or Open | ||||||
| P1121 /D | TP Circuit Intermittent High Voltage | Open/Short Or Poor Ground In Circuit | ||||||
| P1122 /D | TP Circuit Intermittent Low Voltage | Open/Short Or Poor Ground In Circuit | ||||||
| P1133 /B | Bank 1 Primary HO2S Circuit Insufficient Switching | Exhaust Leak, Short In Circuit, HO2S Or PCM | ||||||
| P1134 /B | Bank 1 Primary HO2S Circuit Transition Time Ratio | Exhaust Leak, Open/Short In Circuit, HO2S Or PCM | ||||||
| P1153 /B | Bank 2 Primary HO2S Circuit Insufficient Switching | Exhaust Leak, Short In Circuit, HO2S Or PCM | ||||||
| P1154 /B | Bank 2 Primary HO2S Circuit Transition Time Ratio | Exhaust Leak, Open/Short In Circuit, HO2S Or PCM | ||||||
| P1171 /A | Fuel System Lean During Acceleration | Fuel Pressure, Incorrect Fuel Or Hot Fuel | ||||||
| P1390 /D | G-Sensor Circuit Intermittent Low Voltage | Open/Short | ||||||
| P1391 /B | G-Sensor Circuit Performance | G-Sensor Or PCM | ||||||
| P1392 /A | G-Sensor Circuit Low Voltage | PCM | ||||||
| P1393 /A | G-Sensor Circuit High Voltage | Poor Grounds, G-Sensor Or PCM | ||||||
| P1394 /D | G-Sensor Circuit Intermittent High Voltage | Poor Ground, MAP Or G-Sensor | ||||||
| P1406 /A | Exhaust Gas Recirculation (EGR) Valve Pintle Position Circuit | Open/Short, EGR Or PCM | ||||||
| P1441 /B | EVAP System Flow During Non-Purge | Short, PCM, EVAP Purge Solenoid Or EVAP Vacuum Switch | ||||||
| P1442 /B | EVAP System Vacuum Switch Circuit | Open/Short, PCM Or EVAP Vacuum Switch | ||||||
| P1508 /B | Idle Control System Low RPM | IAC Valve Circuit Or PCM | ||||||
| P1509 /B | Idle Control System High RPM | Vacuum Leaks, IAC Circuit Or PCM | ||||||
| P1618 /A | Serial Peripheral Interface PCM Interprocessor Communication Error | PCM | ||||||
| P1640 /D | ODM "A" Fault | Open in Ignition Circuit Or PCM | ||||||
| P1705 (1) | (2) | Short In A/T Gear Position Switch Wire Or Faulty A/T Gear Position Switch | ||||||
| P1706 (1) | (3) | Open A/T Gear Position Switch Circuit Or Faulty A/T Gear Position Switch | ||||||
| P1753 (1) | Lock-Up Clutch Does Not Engage Or Disengage. Unstable Idle (A/T) | Open/Short In Lock-Up Control Solenoid | ||||||
| P1753 (1) | Lock-up Clutch Wont Engage/Disengage. Unstable Idle (A/T) | Valve "A" Circuit Or Faulty Solenoid | ||||||
| P1758 (1) | Lock-up Clutch Does Not Engage (A/T) | Open/Short In Lock-up Control Solenoid | ||||||
| P1758 (1) | Lock-up Clutch Does Not Engage (A/T) | Valve "B" Circuit Or Faulty Solenoid | ||||||
| P1860/A (1) | TCC PWM Solenoid Circuit Fault | Miscellaneous | ||||||
| P1870/A (1) | Transmission Component Slipping | Miscellaneous | ||||||
|
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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.
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