On the passenger side of your car, under the dash beneath the glove box, you will find a green cover above the kickpanel that houses a green connector that has two connectors.
You need turn the ignition off, and using the piece of wire or paperclip, jump the blue connector so that you connect the two wires together. Basically stick one end of the paperclip or peice of wire into one prong on the connector and stick the other end of the paperclip or wire into the other prong.
Once you have done this, turn the key to the IGN position and watch your CEL light. It will illuminate in a series of flashes.
You will notice that there will be LONG flashes and SHORT flashes. All of the ECU trouble codes are two-digits. LONG flashes determine the TENS digit by the number of times it flashes, and SHORT flashes determine the ONES digit by the number of times it flashes.
ie. LONG-LONG-LONG-SHORT-SHORT-SHORT-SHORT-PAUSE
is the trouble code: 34
3 LONG flashes followed by 4 short flashes, then a long pause. If that is the only code the ECU is throwing, then the code will simply repeat until you remove the key. If, however there are more than one ECU error code, then you will see a different series of flashes followed by the long pause. Once all the ECU codes have been displayed, they will continuously cycle until you remove the key.
ie. LONG-LONG-SHORT-PAUSE-LONG-LONG-LONG-LONG-SHORT-SHORT-SHORT-PAUSE
is the trouble code: 21 and 43.
00
ECU
Defective ECU
01
Primary O2 sensor
Open or short in O2 sensor circuit, defective Primary O2 sensor
02
Secondary O2 sensor
Open or short in O2 sensor circuit, defective Secondary O2 sensor
03
Manifold Absolute Pressure sensor
Open or short in MAP sensor circuit, defective MAP sesnor
04
Crankshaft Position sensor
Timing belt slipped, defective CP sensor
05
Manifold Absolute Pressure sensor
Reading too low or too high, defective MAP sensor
06
Engine Coolant Temp circuit
Reading too low or too high, open or short in circuit, defective ECT circuit
07
Throttle Position circuit
Reading too low or too high, open or short in circuit, defective TPS circuit
08
Top Dead Center sensor
Open or short in TDC sensor circuit, defective TDC sensor
09
Cylinder Position sensor
Open or short in CYP sensor circuit, defective CYP sensor
10
Intake Air Temperature sensor
Open or short in IAT sensor circuit, defective IAT sensor
12
Exhaust Gas Recirculation Valve
Open or short in EGR valve circuit, defective EGR valve
13
Barometric Pressure sensor circuit
Defective ECM (Barometric sensor)
14
Idle Control System Malfunction
Defective IAC valve, defective fast idle thermo valve, throttle body
15
Ignition Output Signal
Missing, defective or noisy Ignition Output Signal
16
Fuel Injector System
Defective or malfunctioning Fuel Injector System
17
Vehicle Speed sensor circuit
Open or short in VS sensor circuit, defective VS sensor
19
Lock-up Control Solenoid
Open or short in LCS circuit, defective LCS solenoid
20
Electrical Load Detector circuit
Open or short in ELD circuit, defective ELD circuit
21
VTEC Solenoid Valve
Open or short in VTEC solenoid valve circuit, defective VTEC solenoid valve
22
VTEC Oil Pressure Switch
Open or short in VTEC OPS circuit, defective VTEC pressure switch
23
Knock sensor circuit
Open or short in Knock sensor circuit, defective Knock sensor circuit
30
A/T FI Signal A high/low input
Defective AFSA line, TCM
31
A/T FI Signal B high/low input
Defective AFSB line, TCM
41
Primary Heated O2 sensor heater circuit
Open or short in Primary O2 sensor heater circuit, defective Primary O2 sensor heater circuit
43
Fuel Supply System
Defective or malfunctioning Fuel Supply System
45
System too lean/rich
Fuel supply system, Primary O2 sensor, MAP sensor, contaminated fuel, valve clearance, exhaust leakage
48
Lean Air Fuel sensor
Open or short in Lean Air Fuel sensor circuit, defective Lean Air Fuel sensor
54
Crankshaft Speed Fluctuation sensor
Open or short in CKF sensor circuit, defective CKF sensor circuit
58
Top Dead Center sensor #2
Open or short in TDC sensor circuit, defective TDC sensor
61
Primary Heated O2 sensor
Slow response, exhaust leak, defective Primary Heated O2 sensor
63
Secondary Heated O2 sensor
Slow response, exhaust leak, defective Secondary Heated O2 sensor
65
Secondary Heated O2 sensor circuit
Open or short in Secondary Heated O2 sensor circuit, defective Secondary Heated O2 sensor circuit
OBD-II ONLY (1996-Present)
67
Catalyst System Efficiency
System below threshold, defective catalytic converter
70
Automatic Transaxle
A/T transmission, A/T FI data line, TCM, ECM
71
Random Misfire (Cylinder 1)
Ignition system, fuel supply system, MAP sensor, IAC valve, contaminated fuel, lack of fuel, fuel injector,
fuel injector circuit, low compression, valve clearance
72
Random Misfire (Cylinder 2)
73
Random Misfire (Cylinder 3)
74
Random Misfire (Cylinder 4)
75
Random Misfire (Cylinder 5)
76
Random Misfire (Cylinder 6)
80
Exhaust Gas Re-circulation
Malfunction with EGR system, insufficient flow
86
Engine Coolant Temp circuit
Defective ECT sensor, defective cooling system
90
Evaporative Emission Control System
Fuel cap loose, poor vacuum connection, fuel tank, fuel tank pressure sensor, EVAP bypass solenoid valve,
EVAP tow-way valve, EVAP control canister vent shut valve, EVAP canister, EVAP purge control solenoid valve
91
Fuel Tank Pressure sensor circuit
Possible leak in the Fuel Tank Emissions System, open or short in FTP sensor circuit, defective FTP sensor circuit
92
Evaporative Emission Control System
Insufficient Purge Flow or Defective Emissions System