[TheOtherDave™]

OBD-1 CODE CHART:
These codes are for OBD-1 ECU-equipped Integras ONLY (1990-1995 inclusive)

Spoiler for OBD-1 Chart:

0 Engine Control Module (ECM/ECU)
1 Heated 02 sensor
3 Manifold Absolutre Pressure (MAP Sensor)
4 Crank Shaft Position Sensor (CKP Sensor)
6 Engine Coolant Temperature (ECT Sensor)
7 Throttle Position (TP sensor)
8 Top Dead Center Position (TDC sensor)
9 #1 Cylinder Position (CYP sensor)
10 Intake Air Temperature (IAT sensor)
13 Barometric Sensor (BARO sensor)
14 Idle Air Control Valve (IACV sensor)
15 Ignition Output Signal
16 Fuel Injector
17 Vehicle Speed Sensor (VSS sensor)
19 Lock Solenoid Valve (A/T trans)
20 Electrical Load Sensor (ELD sensor)
21 VTEC Solenoid (VTS)
22 VTEC Pressure Switch (VTPS sensor)
23 Knock Sensor (KS)
30 A/T FI Signal A
31 A/T FI Signal B
41 Heated 02 Sensor
43 Fuel Supply

OBD-2 CODE CHART:
These codes are for OBD-2 ECU-equipped Integras ONLY (1996-2001)

Spoiler for OBD-2 Chart:

0 ECU
1 Oxygen Content
3 Map Sensor
4 Crank Angle Sensor
5 Map Sensor
6 Coolant Temperature
7 Throttle Angle
8 TDC Position
9 No 1 Cylinder Position
10 Intake Air Temperature
12 Exhaust Gas Recirculation System
13 Atmosphere Pressure
14 Electronic Air Control
15 Ignition Output Signal
16 Fuel Injector
17 Vehicle Speed Sensor
20 Electronic Load Detector
21 VTEC Solenoid Valve (GSR & ITR Models)
22 VTEC Oil Pressure Switch (GSR & ITR Models)
23 Knock Sensor
30 TCM Signal A
31 TCM Signal B
41 O-2 Sensor Heater
43 Fuel Supply System
45 System Too Rich or Too Lean
48 Primary Heated O-2 Sensor
54 Crankshaft Speed Fluctuation Sensor
61 Primary O-2 Sensor Circuit
63 Secondary O-2 Sensor Circuit
67 Catalyst System
70 Automatic Transaxle
71-74 Random Misfire (71=Cylinder 1, 72=Cylinder 2, etc..)
80 Exhaust Gas Recirculation
86 Engine Coolant Temperature Circuit
90 Evaporative Emission Control System Leak Detected
91 Fuel Tank Pressure Circuit
92 Evaporative Emission Control System Insufficient

An important note about the language used for code descriptions:

Spoiler for ...:

Originally Posted by JimBlake

Just to be picky about the list above, code 1 isn't 'oxygen content' but it's a sensor problem. Codes 43 & 45 would indicate mixture issues for the situation where the ECU 'believes' the sensor itself is OK. Similarly, codes like 6, 10, 13, etc. don't mean the temperature is bad, they mean the measurement is bogus.

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GENERATION III ABS DTC CODE CHART:

Spoiler for As originally contributed by JimBlake::

And another one for the ABS error codes. You jumper the same SCS connector as when you're reading ECU codes, but it's the ABS light that flashes. If you have ECU and ABS problems, then both lights will be flashing.

- Plug in the jumper, turn on the key. ABS light comes on for a couple seconds then off for a couple seconds. That isn't part of the code.

- Short flashes for the first digit of the code.
- Short pause.
- Short flashes for the 2nd digit of the code.
- Long pause.
- Repeat the code or display another.

(94-97) ABS DTCs...
1 - ABS pump motor over-run
1 2 ABS pump motor
1 3 high pressure leakage
1 4 pressure switch
1 8 high pressure system
2 1 parking brake
3 1 pulser RF
3 2 pulser LF
3 4 pulser RR
3 8 pulser LR
3 12 different diameter tires
4 1 wheel sensor RF
4 2 wheel sensor LF
4 4 wheel sensor RR
4 8 wheel sensor LR
5 - rear wheel lock - R/L
5 4 rear wheel lock - R
5 8 rear wheel lock - L
6 - fail-safe relay - F/R
6 1 fail-safe relay - F
6 4 fail-safe relay - R
7 1 solenoid - RF
7 2 solenoid - LF
7 4 solenoid - R
8 1 ABS function
8 2 CPU comparison
8 4 IC self-check

Beginning in '98 the ABS system was COMPLETELY different. That one had a different set of error codes.