Don't know what this error code is.
SOURCE: Error Code E000001-0004
The main thermistor TH1 has poor contact or open circuit.The thermal switch TP1 has an open circuit.The fixing heater has an open circuit.The SSR is faulty or the DC controller PCB.After the main power switch is turned ON the temperature detected by the main thermistor does not reach 70 C.The error must be reset in service mode :COPIER - FUNCTION - CLEAR - ERR
there is a good possibility that the main thermistor and the sub thermistor has gone bad or is dirty. also it might need adjusted to be better placed next to the upper fixing roller
This error code is a sensor in the side where paper jams usually occur open the door and look for a small sensor in black plastic, it will probably be not located properly these are known for dislodeging, Canon engineers simply glue them back in, switch off the power beofre doing this and when you switch back on it should load ok.
Usually answered in minutes!