P1491 Rad Fan Control Relay Circuit. An open or shorted condition detected in the radiator fan control relay control circuit. This includes PWM solid state relays.
I would guess that there is a short circuit or open circuit in the wiring that powers the e-fan, or the wiring that tells the PCM to turn the fan on. Check the wires and wire plug at the Coolant Temperature Sensor and test or replace the CTS.
Progressive Liberalism: Bringing you new ideas so wonderful, they have to include mandatory participation ......
Originally Posted by Ronald W. Reagan: Government is not the solution to our problem; Government is the problem.