INDEX:
-Engine Codes: Page 1
-Wheel and Tire Size Info: Page 11
I'm feeling left out since everyone has one of these...
Anyway, let's start with the CEL codes (borrowed from TPC):
To find the CEL Code:
In order to get the code you'll need to find the service connector. On the 5th Gens it's on the right hand side of the centre console underneath a carpeted panel that just pops right out. The connector looks like a telephone connector and is plugged into a blue plastic piece that just serves as a holder. Unplug it and you'll see that it has two sockets in it that lead to two wires.
You'll need a small piece of wire for this. Make sure the car is off. Just connect the two ports in the service connector together with the wire. After you've shorted the service connector, turn the key in the ignition to the on position (you don't actually need to start the car) and the yellow engine light will flash at you. There will be a series of long flashes, short flashes, and then it will repeat itself. Count the number of long flashes and short flashes and this will give you the MIL code. 2 long flashes and 3 short flashes is code 23. Once you've found the code, turn the key back to off and remove the wire from the service connector. You can look up the code in the following list.
MIL Codes:
3 Manifold Absolute Pressure Signal
10 Intake Air Temperature Cicuit
86 Engine Coolant Temperature Circuit
6 Engine Coolant Temperature Circuit
7 Throttle Position Circuit
1 Primary Heated Oxygen Circuit
61 Primary Heated Oxygen Circuit
41 Primary Heated Oxygen Circuit
63 Secondary Heated Oxygen Circuit
65 Secondary Heated Oxygen Circuit
45 System too Rich/Lean Fuel Supply System
71 Misfire Detected - Cylinder 1
72 Misfire Detected - Cylinder 2
73 Misfire Detected - Cylinder 3
74 Misfire Detected - Cylinder 4
23 Knock Sensor Circuit Malfunction Open or short in Knock Sensor (KS) circuit
4 Crankshaft Position Sensor Circuit
80 Exhaust Gas Recirculation
67 Catalyst System Efficiency Below Threshold Three way
92 Evaporative Emission Control System
91 Fuel Tank Pressure Sensor High/Low Input Open or short in Fuel Tank Pressure Sensor Circuit
17 Vehicle Speed Circuit Malfunction Vehicle Speed Sensor
14 Idle Control System Malfunction IAC Valve
70 Automatic Transaxle Automatic Transmission
13 Barometric Pressure Circuit
5 Manifold Absolute Pressure
22 VTEC System Malfunction VTEC Solenoid Valve
20 Electrical Load Detector Circuit
8 Crankshaft Position / Top Dead Center Sensor
9 Cylinder Position Sensor
90 Evaporative Emission Control System
92 Evaporative Emmision Purge Flow Switch
12 EGR Valve Lift Sensor
14 Idle Air Control Valve Circuit Failure IAC Valve
30 SEAF/SEFA Signal Line Failure