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found this somewhere may be helpful


Subaru
Engine Interference Replace
1.2 (SOHC) No 60,000
1.2 (DOHC) Yes 60,000
1.8 No 52,000
1.8 (Impreza) No 60,000
2.2 (SOHC) No 60,000
2.2 (DOHC) Yes 60,000
2.5 (SOHC) No 60,000
2.5 (DOHC) Yes 60,000
2.7) No 60,000
3.3 Yes 60,000



Diagnostic Trouble Codes - 1992
Subaru
11 Crank Angle Sensor (No Reference Pulse).
12 Ignition Switch.
13 Cam Angle Sensor.
14 Injector 1.
15 Injector 2.
16 Injector 3.
17 Injector 4.
21 Engine Coolant Temperature Sensor.
22 Knock Sensor.
23 Air Flow Sensor.
24 Air Control Valve.
31 Throttle Sensor.
32 O2 Sensor.
33 Vehicle Speed Sensor.
35 Canister Purge Control Solenoid.
41 Air / Fuel Learning Control Function.
42 Idle Switch.
45 Atmospheric Pressure Sensor.
49 Air Flow Sensor.
51 Inhibitor Switch (A/T).
51 Neutral Switch (M/T).
52 Parking Switch (A/T).

Extracting Trouble Codes:
The self-diagnostic system operates in two modes, a Regular Mode and a Test Mode. In the Regular Mode, components necessary for proper starting and driving are monitored by the control unit. If the control unit detects a malfunction in the Regular Mode, the ESC or Check Engine light will be lit by the control unit.
To diagnose the system, the Test Mode must be accessed. This is done by first turning the ignition OFF and connecting the Test Mode connectors (two wires with "T" shaped connectors located under the left side dash ). Then turn the ignition ON and read the trouble codes as displayed by the red LED on the control unit which is located under the dash.
Trouble codes are represented by a long flash for the first digit and a short flash for the second digit. For example, code 23 would be represented by 2 long flashes and 3 short flashes. If more than one code is stored in the control unit's memory, the codes will be displayed in numerical order. When the system has been restored to normal operation, the trouble codes will automatically clear from the control unit's memory.

the timing belt replacement u mentioned is in miles. (60,000 miles equals 100'000 Kms basically..)



Heres some more Trouble Codes

Subaru Code Subaru Trouble Code Description
1 Engine Speed Signal Circuit
11 Crankshaft Position Sensor
12 Starter Signal
13 Camshaft Position Sensor
14 Fuel Injector No. 1 (Legacy, Impreza, Justy, SVX)
15 Fuel Injector No. 2 (Legacy, Impreza, Justy, SVX)
16 Fuel Injector No. 3 (Legacy, Impreza, Justy, SVX)
17 Fuel Injector No. 4 (Legacy, Impreza, SVX)
18 Fuel Injector No. 5 (SVX)
19 Fuel Injector No. 6 (SVX)
21 Engine Coolant Temperature Sensor
22 Knock Sensor
23 Mass Air Flow Sensor Circuit
24 Idle Control System Malfunction
24 ISC Valve (Stick)
24 Open/Short in ISC Valve Circuit
26 Intake Air Temperature Sensor
27 ATF Temperature Sensor Circuit
28 Knock Sensor #2
29 Crankshaft Position Sensor 2
31 Throttle Position Sensor Circuit
32 A/F Sensor #1 System
32 A/F Sensor #2 System
32 Oxygen Sensor
33 Vehicle Speed Sensor
35 CPC System
36 Turbine Speed Signal
37 Rear O2 Sensor Circuit / A/F Sensor Circuit Malfunction
38 Torque Control Signal #1
38 Torque Control Signal #2
38 Torque Control Signal System
38 Torque Permission Signal
39 Traction Control System
41 Air/Fuel Adaptive Control
42 Idle Switch
43 Accelerator Pedal Switch
44 Turbocharging Pressure Control Signal
45 Pressure Sensor
46 Neutral or Parking Switch or Circuit
47 Fuel Injector
48 Lean Burn System
49 CO Resistor
51 Neutral Position Switch
52 Parking Brake Switch (Exc. Justy)
53 Antenna
53 Anti-Quick Operation Mode
53 Communication Error (Time Over)
53 EGI Control Module EEPROM
53 IMM Circuit Failure (Except Antenna Circuit)
53 IMM Control Module EEPROM
53 Key Communication Failure
53 Reference Code Incompatibility
53 Use of Unregistered Key
54 Air Intake System
55 EGR Valve Lift Sensor
56 EGR System
57 Canister Control System
58 Air Control System
61 Air Suction Control Solenoid Valve
62 Exhaust Manifold Valve Negative Pressure Control Solenoid
64 Relief Valve Control Solenoid Valve 1
64 Relief Valve Control Solenoid Valve 2
65 Differential Pressure Sensor
66 Twin Turbocharger System(H)
66 Twin Turbocharger System(S)
66 Twin Turbocharger System(T)
66 Two Stage Twin Turbocharger System
67 Exhaust Manifold Valve Positive Pressure Control Solenoid
68 Turbocharging Pressure Control Output Signal #2
71 Shift Solenoid Valve
72 Shift Solenoid #2 Circuit
73 Low Clutch Timing Solenoid Circuit
74 Brake Clutch Timing Solenoid Circuit Malfunction
75 Line Pressure Duty Solenoid Circuit
76 Brake Clutch Pressure Duty Solenoid Circuit Malfunction
77 Lock-Up Duty Solenoid Circuit
78 Tiptronic Solenoid System
79 Transfer Clutch Duty Solenoid Circuit
81 Torque Up Control Valve
85 Charger System Circuit Malfunction
86 CAN (Communication System)
87 Variable Induction Solenoid Valve Circuit Malfunction
88 Fuel Pump Circuit Malfunction
89 VVT Systems (L)
89 VVT Systems ®
91 TCS Relief Valve
92 Electrical Generation Control Signal Circuit Malfunction
93 Vehicle Speed Sensor #1 Circuit
94 Lateral G Sensor Signal Circuit Malfunction