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.
2000 Acura 3.5RLFACTORY OEM SERVICE PROCEDURE
Engine Controls - Self-Diagnostics
- Introduction
- Self-Diagnostic System
- Test Equipment
- Summary
- Diagnostic Trouble Code Definitions
- Diagnostic Circuit Check
- Diagnostic Tests
- DTC P0107: Map Sensor Low Voltage Input
- DTC P0108: Map Sensor High Voltage Input
- DTC P0112: IAT Sensor Low Voltage Input
- DTC P0113: IAT Sensor High Voltage Input
- DTC P0116: ECT Sensor Range/Performance Problem
- DTC P0117: ECT Sensor Circuit Low Voltage Input
- DTC P0118: ECT Sensor Circuit High Voltage Input
- DTC P0122: TP Sensor Circuit Low Voltage Input
- DTC P0123: TP Sensor Circuit High Voltage Input
- DTC P0131 Or P0151: Primary Ho2S-1 Circuit Low Voltage
- DTC P0132 Or P0152: Primary Ho2S-1 Circuit High Voltage
- DTC P0133 Or P0153: Primary Ho2S-1 Slow Response
- DTC P0135, P0141 Or P0155: Ho2S Heater Circuit Malfunction
- DTC P0137: Secondary Ho2S-2 Low Voltage
- DTC P0138: Secondary Ho2S-2 High Voltage
- DTC P0139: Secondary Ho2S-2 Slow Response
- DTC P0171, P0172, P0174 Or P0175: Fuel System Is Too Lean Or Too Rich
- DTC P0325 Or P0330: Knock Sensor (KS) Circuit Malfunction
- DTC P0335, P0336, P1336, P1337, P1381, P1382, P1386 Or P1387: CKP/CYP Sensors Malfunction
- DTC P0401: EGR - Insufficient Flow Detected
- DTC P0420: Catalyst Efficiency Below Threshold
- DTC P0451: Fuel Tank Pressure Sensor (Ftps) Range/Performance Problem
- DTC P0452: Fuel Tank Pressure Sensor (Ftps) Low Voltage
- DTC P0453: Fuel Tank Pressure Sensor (Ftps) High Voltage
- DTC P0505: Idle Control System Malfunction
- DTC P0560: Low Voltage In Pcm Back-Up Circuit
- DTC P1106: Barometric Pressure (BARO) Sensor Range/Performance Problem
- DTC P1107 Or P1108: Problem In BARO Sensor Circuit
- DTC P1121: Throttle Position (TP) Lower Than Expected
- DTC P1122: Throttle Position (TP) Higher Than Expected
- DTC P1128: Manifold Absolute Pressure Lower Than Expected
- DTC P1129: Manifold Absolute Pressure Higher Than Expected
- DTC P1201-P1206 Or DTC P1301-P1306: Misfire Detected
- DTC P1201-P1206 Or P1301-P1306 Set With DTC P0300: Random Misfire Detected
- DTC P1316 Or P1317: Spark Plug Voltage Detection Circuit Malfunction
- DTC P1318 Or P1319: Spark Plug Voltage Detection Module Reset Malfunction
- DTC P1456: EVAP Control System
- DTC P1457 EVAP Control System
- DTC P1486: Thermostat Range/Performance Problem
- DTC P1491: Insufficient EGR Valve Lift Detected
- DTC P1498: EGR Valve Lift Sensor Voltage High
- DTC P1508: Idle Air Control (IAC) Valve Circuit
- DTC P1607: Pcm Internal Failure
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.
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