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14 and 71 what do they mean its on a 1993 lexus sc300
14 - Ignition signal. No IGF signal to ECU for 6 consecutive IGT signal.
Trouble area
*Open or short in IGF or IGT circuit from igniter to ecu.
*Igniter.
*ECU.
71 - EGR system malfunction
Trouble area
*Open in EGR gas temp, sensor circuit
*Short in VSV circuit for EGR.
*EGR disconnected or valve stuck.
*Clogged EGR gas passage.
*ECM.
14 - Ignition signal. No IGF signal to ECU for 6 consecutive IGT signal.
Trouble area
*Open or short in IGF or IGT circuit from igniter to ecu.
*Igniter.
*ECU.
71 - EGR system malfunction
Trouble area
*Open in EGR gas temp, sensor circuit
*Short in VSV circuit for EGR.
*EGR disconnected or valve stuck.
*Clogged EGR gas passage.
*ECM.
i did cat an igf wire one day someone told me i could hook up a tach to it it didnt work so i did splice it back togather and all my car still runs fin tho do u think it is affecting anything