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Honda OBD1 Codes

Codes 0 and 11
Electronic Control Module (ECM)
Code 1
Heated oxygen sensor A
Code 2
Oxygen content B
Codes 3 and 5
Manifold Absolute Pressure
Code 4
Crank position sensor
Code 6
Engine coolant temperature
Code 7
Throttle position sensor
Code 8
Top dead center sensor
Code 9
No.1 cylinder position sensor
Code 10
Intake air temperature sensor
Code 12
Exhaust recirculation system
Code 13
Barometric pressure sensor
Code 14
Idle air control valve or bad ECM
Code 15
Ignition output signal
Code 16
Fuel Injector
Code 17
Vehicle speed sensor
Code 19
A/T lock-up control solenoid
Code 20
Electric load detector
Code 21
V-TEC control solenoid
Code 22
V-TEC pressure solenoid
Code 23
Knock sensor
Code 30
A/T FI signal A
Code 30
A/T FI signal B
Code 41
Heated oxygen sensor heater
Code 43
Fuel supply system
Code 45
Fuel supply metering
Code 48
Heated oxygen sensor
Code 61
Front heated oxygen sensor
Code 63
Rear heated oxygen sensor
Code 65
Rear heated oxygen sensor heater
Code 67
Catalytic converter system
Code 70
Automatic transaxle
Code 71
Misfire detected cylinder 1
Code 72
Misfire detected cylinder 2
Code 73
Misfire detected cylinder 3
Code 74
Misfire detected cylinder 4
Code 75
Misfire detected cylinder 5
Code 76
Misfire detected cylinder 6
Code 80
Exhaust recirculation system
Code 86
Coolant temperature
Code 92
Evaporative emission control system
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