P1486

P1486: The HDS or the scan tool indicates Diagnostic Trouble Code (DTC) P1486: Range/Performance Problem in Thermostat.

NOTE: If the DTCs listed below are stored at the game time as DTC P1486, troubleshoot those DTCs first, then recheck for P1486.

P0107, P0108, P1128, P1129: MAP Sensor
P2227, P2228, P2229: Barometric Pressure Circuit
P1259, P1279: VTEC system
P0401: EGR Flow Insufficient
P0404: EGR Valve Lift Insufficient
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: CKP Sensor 1/2
P0300: Random Misfire
P0301, P0302, P0303, P0304, P0305, P0306: Cylinder 1, 2, 3, 4, 5 or 6 Misfire detected.
P0506, P0507: Idle Control System Malfunction
P0511: Idle Air Control Valve

DTC P1486 can set occasionally when the hood is opened.




Troubleshooting