SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSACURA20043.5RLREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCESYSTEMENGINE PERFORMANCE SYSTEM SELF-DIAGNOSTICSDIAGNOSTIC TESTSDTC P1486: COOLING SYSTEM MALFUNCTION (2004 3.5RL)
2004 Acura 3.5RL

DTC P1486: Cooling System Malfunction (2004 3.5RL)

2004 Acura 3.5RLSECTION DTC P1486: Cooling System Malfunction (2004 3.5RL)
NOTE: DTC P1486 can set occasionally when hood is opened. If some of the DTCs listed below are stored at the same time as DTC P1486, troubleshoot those DTCs first, then troubleshoot DTC P1486:
  • P0107, P0108, P1128, P1129:  MAP Sensor
  • P2227, P2228, P2229:  Barometric Pressure Circuit
  • P1259, P1279:  VTEC System
  • P0401:  Insufficient EGR Flow
  • P0404  Insufficient EGR Valve Lift
  • P0406:  EGR Valve Position Sensor High Voltage
  • P0125, P0116, P0117, P0118:  Engine Coolant Temperature Circuit
  • P0112, P0113:  Intake Air Temperature Circuit
  • P0345, P0349, P1336, P1337:  Crankshaft Position Sensors 1 & 2
  • P0300:  Random Misfire
  • P0301, P0302, P0303, P0304, P0305, P0306:  Cylinder No. 1, 2, 3, 4, 5 or 6 Misfire Detected
  • P0506, P0507:  Idle Control System Malfunction
  • P0511:  Idle Air Control Valve

Turn ignition switch off. Check engine coolant level. Add coolant as necessary. If coolant level is okay, turn ignition switch ON (II). Check radiator fan. If radiator fan does not keep running, check thermostat. If radiator fan keeps running, check radiator fan circuit, radiator fan switch circuit, and radiator fan switch. Repair as necessary. If all components are okay, substitute a known-good PCM, and recheck. If symptom or indication goes away, replace original PCM.

RENDER: 1.0x

NO RELATED

Recommended Tools & Savings

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Affiliate disclosure: We may earn a commission at no extra cost to you.

Shop Manual-Ready ToolsFree Quote CheckQuote Shield Pro

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.