Honda

Code Fault Description
0 Electronic control unit or its circuit
1 Oxygen sensor or its circuit (except engine D16A9)
3 MAP sensor (manifold absolute pressure) or its circuit
4 Crankshaft position sensor or its circuit
5 MAP sensor or its circuit
6 Engine coolant temperature sensor or its circuit
7 Throttle position sensor (potentiometer) or its circuit
8 TDC sensor (Top Dead Center) or its circuit
9 Sensor identifying the 1st cylinder
10 Intake air temperature sensor or its circuit
11 CO potentiometer or its circuit
12 Exhaust gas recirculation (EGR) system or its circuit
13 Barometric pressure sensor or its circuit
14 Idle speed control valve or its circuit
15 Fuel system output signal
16 Fuel injector or its circuit (engine D15B2)
17 Vehicle speed sensor or its circuit
18 Ignition timing
19 Automatic transmission lock-up solenoid valve
20 Electronic load detector or its circuit
21 Solenoid valve in ABS modulator or its circuit
22 Oil pressure switch for valve timing
30 Signal “A” from automatic transmission
31 Signal “B” from automatic transmission
41 Oxygen sensor heater or its circuit (engines D16Z6, D16Z7, B16A2)
41 Linear air flow sensor heater or its circuit (engine D15Z1)
43 Fuel system or its circuit (engines D16Z6, D16Z7, B16Z2)
48 Linear air flow sensor or its circuit (engine D15Z1)