.
Because of this we see a wide range of symptoms caused by ECU failure, the most common symptoms are:
– Misfire on one cylinder
– Will not rev past 1500 rpm
– Non start intermittently
– Complete non start
– No communication via diagnostic.
Common Stored Fault Codes:
P0201 – injector 1 voltage low
P0202 – injector 2 voltage low
P0203 – injector 3 voltage low
P0204 – injector 4 voltage low
P2146 – Capacitor Voltage 1 Low Voltage
P1600 – replace ECU
P1625 – main relay
P060B – Replace ECU
P0608 internal control module defective
P1120 – pedal position sensors circuit 1
P1122 – Pedal position sensor circuit 2
P0683 – Glow plug circuit low voltage
These are a list of common fault codes, but usually a failed ECU will cause various fault codes to be stored.