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.
2001 Acura 3.2TLFACTORY 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: Manifold Absolute Pressure Sensor (Map) Circuit Low Voltage Input
- DTC P0108: Manifold Absolute Pressure (Map) Sensor Circuit High Voltage Input
- DTC P0112: Intake Air Temperature (IAT)Sensor Circuit Low Voltage Input
- DTC P0113: Intake Air Temperature (IAT) Sensor Circuit High Voltage Input
- DTC P0116: Engine Coolant Temperature (ECT) Sensor Circuit Range/Performance Problem
- DTC P0117: Engine Coolant Temperature (ECT) Sensor Circuit Low Voltage Input
- DTC P0118: Engine Coolant Temperature (ECT) Sensor Circuit High Voltage Input
- DTC P0122: Throttle Position (TP) Sensor Circuit Low Voltage Input
- DTC P0123: Throttle Position (TP) Sensor Circuit High Voltage Input
- DTC P0128: Cooling System Malfunction (Not Used On 3.2TL)
- DTC P0131: Primary Heated Oxygen Sensor-1 (Ho2S-1) Circuit Low Voltage
- DTC P0132: Primary Heated Oxygen Sensor-1 (Ho2S-1) Circuit High Voltage
- DTC P0133: Primary Heated Oxygen Sensor-1 (Ho2S-1) Slow Response
- DTC P0135 Or P0141: Heated Oxygen Sensor (Ho2S) Heater Circuit Malfunction
- DTC P0137: Secondary Heated Oxygen Sensor-2 (Ho2S-2) Low Voltage
- DTC P0138: Secondary Heated Oxygen Sensor-2 (Ho2S-2) High Voltage
- DTC P0139: Secondary Heated Oxygen Sensor-2 (Ho2S-2) Slow Response
- DTC P0171 Or P0172: Fuel System Is Too Lean Or Too Rich
- DTC P0300 Set With DTC P0301, P0302, P0303, P0304, P0305 Or P0306: Random Misfire
- DTC P0301, P0302, P0303, P0304, P0305 Or P0306: Misfire In One Cylinder
- DTC P0325: Knock Sensor (KS) Circuit Malfunction
- DTC P0335 Or P0336: Crankshaft Position (CKP) Sensor Malfunction
- DTC P0401: EGR System - Insufficient Flow Detected
- DTC P0420: Catalyst System - Efficiency Below Threshold
- DTC P0451: Fuel Tank Pressure Sensor (Ftps) Circuit Range/Performance
- 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 P0720: Countershaft Speed Sensor Circuit
- DTC P1106: Barometric Pressure Sensor Range/Performance Problem
- DTC P1107 Or P1108: Problem In Barometric Pressure Sensor Circuit
- DTC P1121: Throttle Position (TP) Lower Than Expected
- DTC P1122: Throttle Position (TP) Higher Than Expected
- DTC P1128: Manifold Absolute Pressure (Map) Lower Than Expected
- DTC P1129: Manifold Absolute Pressure (Map) Higher Than Expected
- DTC P1259: VTEC System Malfunction
- DTC P1297: Low Voltage Electrical Load Detector Circuit
- DTC P1298: High Voltage In Electrical Load Detector Circuit
- DTC P1361 Or P1362: Top Dead Center 1 (TDC1) Sensor Circuit, Or DTC P1366 Or P1367: Top Dead Center 2 (TDC2) Sensor Circuit
- DTC P1456: Evaporative Emission (EVAP) Control System
- DTC P1457: Evaporative Emission (EVAP) Control System
- DTC P1486: Range/Performance Problem In Thermostat (3.2TL)
- DTC P1491: Insufficient EGR Valve Lift
- DTC P1498: EGR Valve Lift Sensor Voltage High
- DTC P1519: Malfunction In Idle Air Control (IAC) Valve Circuit
- DTC P1607: Pcm Internal Failure
- DTC P1676: Frame-To-Powertrain Torque Down Request (FPTDR) Signal Line Failure (3.2CL & 3.2TL)
- DTC P1678: Frame-To-Powertrain Torque Down Request (FPTDR) Signal Line Failure (3.2CL & 3.2TL)
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
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.