Vauxhall Fault Codes for GM Multec SPi

The warning lamp will illuminate when the ignition is turned on, but will go out as soon as the engine is started. It will stay on if the ecu detects a fault with the engine. To activate fault code, connect wire A and B of the 10 pin diagnostic plug. Fault codes will display as flashes - with code 12 being 1 flash, 13 being 2 and so on. To erase the fault code, turn the ignition on/off 25 times. Otherwise disconnect the battery earth lead for at least a minute. This will, however, erase the memory from other electronic units.

Code
Fault
12
Diagnosis initiated
13
Lambda sensor (open circuit)
14&15
Coolant temperature sensor (voltage low & high respectively)
16
Knock signal circuit
18
Knock control system
19
Incorrect RPM signal
21&22
Throttle position sensor (voltage high & low respectively)
24
Vehicle speed sensor (no sensor)
25
Injector valve (voltage low)
28
Fuel pump relay (contact problem)
29&32
Fuel pump relay (voltage low & high respectively)
33&34
Map sensor (voltage high & low respectively)
35
Stepper motor (no idle speed control)
41
EST line coil cylinder 2 & 3 (voltage high)
42
EST line coil cylinder 1 & 4 (voltage high)
43
Linear EGR system
44
Lambda sensor (mixture too weak)
45
Lambda sensor (mixture too rich)
46
EST lines (voltage high)
47
Linear EGR position
49
Battery voltage high
51
Electronic control unit (memory failure)
54
Idle CO pentiometer
55
Electronic control unit
63
EST line coil cylinder 2 & 3 (voltage low)
64
EST line coil cylinder 1 & 4 (voltage low)
69&71
Air temperature sensor (voltage low & high respectively)
75
Torque control (voltage low)
76
Torque control (continuous)
81
Injector valve (voltage high)
93
Quad driver module