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Dtc honda OBDI

Los motores Honda con OBD2 tienen tantos sensores que puede llegar a ser muy dificil

averiguar que es lo que esta andando mal.

Puenteando una ficha color celeste ubicada debajo de la guantera, cerca del ECU se puede

averiguar por medio de la lectura de un codigo que arrojara la luz amarilla en el tablero "Check

Engine"de error y la siguiente tabla, que es lo que no funciona.

El procedimiento es el siguiente:

- Apagar el contacto del auto.

- Buscar debajo de la guantera una ficha color celeste con 2 ranuras planas y puentearla con

un cable.

- Poner el auto en contacto.

- La Luz amarilla que se encontraba prendida va a empezar a hacer una serie de destellos

largos y luego una serie de destellos cortos. Contar cuantos hace de cada uno.

-Los destellos largos son las decenas y los cortos son las unidades.

Ejemplo:

6 destellos largos, 7 destellos cortos significa codigo de error 67

Busco en la tabla y la falla es "baja eficiencia del catalizador o catalizador roto"

Tabla de Codigos de Error para OBD II

# 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

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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

Tabla de Codigos de Error para OBD I

0 Engine Control Module.

1 Heated Oxygen Sensor or Oxygen Sensor.

2 Heated Oxygen Sensor or Oxygen Sensor (Fuel Injection) or Vehicle Speed Sensor

(Carburetor).

3 Manifold Absolute Pressure (MAP) Sensor.

4 Crankshaft Position (CKP) Sensor (Fuel Injection) or Vacuum Switch (Carburetor).

5 MAP Sensor.

6 Engine Coolant Temperature (ECT) Sensor.

7 Throttle Position Sensor (Fuel Injection), Manual Transmission Clutch Switch Signal

(Carburetor), or Automatic Transmission Shift Position Signal (Carburetor).

8 Crankshaft Position (CKP) or Top Dead Center (TDC) Sensor problem (Fuel Injection) or

Ignition Coil Signal (Carburetor).

9 No. 1 Cylinder Position Sensor.

10 Intake Air Temperature (IAT) Sensor.

12 EGR System.

13 Barometric Pressure (BARO) Sensor.

14 Idle Air Control (IAC) Valve.

15 Ignition Output Signal.

16 Fuel Injector System.

17 Vehicle Speed Sensor.

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19 Lock-Up Solenoid Valve.

20 Electric Load Detector.

21 VTEC Solenoid Valve.

22 VTEC Pressure Switch.

23 Knock Sensor.

30 Automatic Transmission FI Signal A.

31 Automatic Transmission FI Signal B.

41 Heated Oxygen Sensor Heater.

43 Fuel Supply System.

48 Heated Oxygen Sensor.

Para identificar si la ECU es OBD2B, OBD2A, OBD1 u OBD0 tenemos que fijarlos en el tipo

de conector. Abajo les muestro una imagen de los distintos modelos de conectores (plugs)

para ECUs.