B16 Obd Ii Trouble Codes

[jfred2112]

its not a DIY, but still good info to have. i got it from clubsi.com


B16 OBDII Error Codes:

# Detection Item Probable Cause
1 Primary O2 Sensor Open or Short in O2 sensor circuit, bad Primary O2 sensor
3 Manifold Absolute Pressure Sensor Open or short in MAP sensor circuit, bad MAPS
4 Crankshaft Position Sensor Failed sensor or timing belt slipped, bad CPS
5 Manifold Absolute Pressure Sensor Reading too low or too high, bad MAP
6 Engine Coolant Temp Circuit Reading too low, high, short or open, bad ECT
7 Throttle Position Circuit Reading too high, low, short or open, bad TPS
8 Crankshaft Position Sensor/
Top Dead Center Sensor/
Cylinder Position Sensor/ CKP/TDC/CYP sensor circuit disconnected, open or short. Bad TDC senor.
9 Cylinder Position Sensor Open or short in CYP circuit, bad CYP sensor
10 Intake Air Temperature Sensor Short or open in AIT circuit, bad AITS
13 Barometric Pressure Sensor Circuit Bad ECM (Barometric sensor)
14 Idle Control System Malfunction Bad IAC valve, bad fast idle thermo valve, Throttle body
17 Vehicle Speed Sensor Circuit Short or open in VSS circuit, bad VSS
20 Electrical Load Detector Circuit Short or open in circuit, bad ELD
22 VTEC System Malfunction Short or open in VTEC circuit, bad VTEC solenoid valve, Bad VTEC pressure switch
23 Knock Sensor Circuit Short or open in Knock Sensor circuit, bad Knock Sensor
30 A/T FI Signal A high/low input Bad AFSA line, TCM
31 A/T FI Signal B high/low input Bad AFSB line, TCM
41 Primary Heated O2 Sensor Heater Open or short in Primary O2 sensor heater circuit
45 System too lean/rich Fuel supply system, Primary O2 sensor, MAP sensor, contaminated fuel, valve clearance, exhaust leakage
54 Crankshaft Speed Fluctuation Sensor Open or short in CKF circuit, bad CKF sensor
61 Primary Heated O2 Sensor Slow response, bad O2 sensor, exhaust leak
63 Secondary Heated O2 Sensor Slow response, bad O2 sensor, exhaust leak
65 Secondary Heated O2 Sensor Circuit Open or short in secondary O2 sensor circuit
67 Catalyst System Efficiency System below threshold, bad catalytic converter
70 Automatic Transaxle A/T transmission, A/T FI data line, TCM, ECM
71 Random Misfire (Cyl 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 (Cyl 2)
73 Random Misfire (Cyl 3)
74 Random Misfire (Cyl 4)
86 Engine Coolant Temp Circuit Bad ECT sensor, bad cooling system
90 Evap Emission Control System Leak 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 Open or short in FTP circuit, Bad fuel tank pressure sensor