Honda Fault Codes
1 O2A – Oxygen sensor #1
2 O2B – Oxygen sensor #2
3 MAP – manifold absolute pressure sensor
4 CKP – crank position sensor
5 MAP – manifold absolute pressure sensor
6 ECT – water temperature sensor
7 TPS – throttle position sensor
8 TDC – top dead centre sensor
9 CYP – cylinder sensor
10 IAT – intake air temperature sensor
12 EGR – exhaust gas recirculation lift valve
13 BARO – atmospheric pressure sensor
14 IAC (EACV) – idle air control valve
15 Ignition output signal
16 Fuel injectors
17 VSS – speed sensor
19 Automatic transmission lockup control valve
20 Electrical load detector
21 VTEC spool solenoid valve
22 VTEC pressure valve
23 Knock sensor
30 Automatic transmission A signal
31 Automatic transmission B signal
36 traction control found on JDM ecu’s
41 Primary oxygen sensor heater
43 Fuel supply system
45 Fuel system too rich or lean
48 LAF – lean air fuel sensor
54 CKF – crank fluctuation sensor
58 TDC sensor #2
61 Primary oxygen sensor
63 Secondary oxygen sensor
65 Secondary oxygen sensor heater
71 random misfire cylinder 1
72 random misfire cylinder 2
73 random misfire cylinder 3
74 random misfire cylinder 4