i found this not sure if its any use to any one but i thought might be a good referance
CA20 ECU Codes
code: description:
11 engine speed sensor (*)
12 system pass
13 oxygen sensor circuit (open)
14 coolant temperature sensor circuit (voltage low)
15 coolant temperature sensor circuit (voltage high)
21 throttle position sensor circuit (voltage high)
22 throttle position sensor circuit (voltage low)
23 start signal circuit (*)
31 park/neutral switch circuit - auto only (*)
32 air mass sensor circuit (voltage low)
33 air mass sensor circuit (voltage high)
34 hotwire self cleaner (*)
43 vehicle speed sensor circuit
44 oxygen sensor circuit (lean)
45 oxygen sensor circuit (rich)
55 ECU
Note: (*) the ECM lamp will not light for these faults.
Note: these codes are applicable to the Australian U12.
KA24 ECU Codes
code: description:
11 crank angle sensor circuit
12 air mass sensor circuit
13 coolant temperature sensor circuit
21 ignition signal circuit
41 air temperature sensor circuit
55 system pass
Note: these codes are applicable to the Australian U12.