Honda Accord 2.3/2.4/3.0L – Civic 1.7/2.0L – CR-V 2.4L – Odyssey 3.5L – S2000 2.2/2.2L (1998 – 2008) OBD1 Codes

Model	Year	Engine identification	System
Accord 2.3L	1998-02	F23A1/4/5	PGM-FI
Accord 2.4L	2003-04	F24A4	PGM-FI
Accord 3.0L	1998-04	J30A1	PGM-FI
Civic 1.7L	2001-05	D17A1/A2/A6/A7	PGM-FI
Civic 2.0L	2002-05	K20A3	PGM-FI
CR-V 2.4L	2002-06	K24A1	PGM-FI
Odyssey 3.5L	1999-04	J35A1/A4	PGM-FI
S2000 2.0L	2000-03	F20C1	PGM-FI
S2000 2.2L	2004-08	F22C1	PGM-FI

General information

Refer to the front of this manual for general test conditions, terminology, detailed descriptions of wiring faults and a general trouble shooter for electrical and mechanical faults.
Engine control module (ECM) incorporates self-diagnosis function.
Malfunction indicator lamp (MIL) will illuminate if certain faults are recorded.
ECM operates in backup mode if sensors fail, to enable vehicle to be driven to workshop.
Trouble codes can be displayed by using a Scan Tool connected to the data link connector (DLC) Accord [1] , CR-V/Odyssey [2] , S2000 2000-04 [3] Civic/S2000 2005- [4] or by the malfunction indicator lamp (MIL) with the data link connector (DLC) terminals jumped [5].

NOTE: The use of a Scan Tool is essential to obtain full diagnostic information.

Accessing

Ensure ignition switched OFF.
Jump data link connector (DLC) terminals 4 and 9 [5].
Switch ignition ON.
Check MIL is flashing.
Trouble codes 1-9 are indicated as follows:

o Individual short flashes display trouble code [6] [A].
o A short pause separates each flash [6] [B).
o A long pause separates each trouble code [6] [C].
o For example: Trouble code 3 displayed [6].

Trouble codes greater than 9 are indicated as follows:

o Long flashes indicate the ‘tens’ of the trouble code [7] [A).
o Short flashes indicate the ‘units’ of the trouble code [7] [C].
o A short pause separates each flash [7] [B).
o A long pause separates each trouble code [7] [D).
o For example: Trouble code 12 displayed [7].

Count MIL flashes and compare with trouble code table.

NOTE: If a trouble code is displayed but not listed in the trouble code table, suspect engine control module (ECM) fault.

Switch ignition OFF.
Remove jump lead.

Erasing – except Accord 2003 ->

After the faults have been rectified, trouble codes can be erased by using a Scan Tool connected to the data link connector (DLC) or as follows:
Switch ignition OFF.
Accord: Remove clock fuse (7.5A) from fascia fusebox for 10 seconds minimum [8]
Civic/CR-V: Remove ECM fuse (15A) from underhood fusebox for 10 seconds minimum [9]
Odyssey: Remove Clock/Back Up fuse (7.5A) from fascia fusebox for 10 seconds minimum: 1999 – [1o] or 2000-04 – [11]
S2000: Remove Back Up fuse (7.5A) from fascia fusebox for 60 seconds minimum [12] .
Reinstall fuse.
Repeat checking procedure to ensure no data remains in ECM fault memory.

Erasing – Accord 2003 ->

Trouble codes can only be erased by using a Scan Tool connected to the data link connector (DLC) [1].

Trouble code identification – permanent trouble codes

Flash code	Permanent OBD-11 code	Fault location	Probable cause
–	PO, P2, UO	Refer to OBD-11 trouble code tables	–
0	P1630	Transmission control module (TCM) processor error	TCM
1	–	Heated oxygen sensor (H02S) – front – circuit/voltage low/high	Wiring open/short circuit, H02S, fuel system, ECM
3	–	Manifold absolute pressure (MAP) sensor – circuit/voltage high/low	Wiring, MAP sensor, ECM
4	–	Crankshaft position (CKP) sensor – circuit malfunction/range/ performance problem	Wiring, CKP sensor, valve timing, ECM
5	P1128	Manifold absolute pressure (MAP) sensor – pressure lower than expected	MAP sensor
5	P1129	Manifold absolute pressure (MAP) sensor – pressure higher than expected	MAP sensor
6	–	Engine coolant temperature (ECT) sensor – circuit/voltage low/high	Wiring short/open circuit, ECT sensor, ECM
7	–	Throttle position (TP) sensor – circuit/voltage low/high	Wiring, TP sensor, ECM
7	P1121	Throttle position (TP) sensor- position lower than expected	TP sensor
7	P1122	Throttle position (TP) sensor – position higher than expected	TP sensor
Accord F23A1/4/5: 8	P1359	Crankshaft position (CKP) sensor – top dead center sensor 1 – connector disconnection	Wiring, ECM
Except Accord F23A1/4/5: 8	P1359	Camshaft position (CMP) sensor – top dead center sensor 1 – connector disconnection	Wiring, ECM
Accord F23A1/4/5: 8	P1361	Crankshaft position (CKP) sensor- top dead center sensor 1 – intermittent signal	Wiring, CKP sensor, ECM
Except Accord F23A1/4/5: 8	P1361	Camshaft position (CMP) sensor – top dead center sensor 1 – intermittent signal	Wiring, CMP sensor, ECM
Accord F23A1/4/5: 8	P1362	Crankshaft position (CKP) sensor – top dead center sensor 1 – no signal	Wiring, CKP sensor, ECM
Except Accord F23A1/4/5: 8	P1362	Camshaft position (CMP) sensor – top dead center sensor 1 – no signal	Wiring, CMP sensor, ECM
9	P1381	Camshaft position (CMP) sensor- intermittent signal	Wiring, CMP sensor, ECM
9	P1382	Camshaft position (CMP) sensor- no signal	Wiring, CMP sensor, ECM
10	–	Intake air temperature (IAT) sensor – circuiUvoltage low/high	Wiring short/open circuit, IAT sensor, ECM
12	–	Exhaust gas recirculation (EGR) system – range/performance problem	Hose leak/blockage, wiring, EGR valve/solenoid
12	–	Exhaust gas recirculation (EGR) valve position sensor A – high input	Wiring short to positive, EGR
12	P1491	Exhaust gas recirculation (EGR) system – valve lift insufficient	Wiring, EGR valve/position sensor, ECM
12	P1498	Exhaust gas recirculation (EGR) valve position sensor – voltage . high	Wiring, EGR valve/position sensor, ECM
13	P1106	Barometric pressure (BARO) sensor – range/performance problem	ECM
13	P1107	Barometric pressure (BARO) sensor – circuit/voltage low	ECM
13	P1108	Barometric pressure (BARO) sensor – circuit/voltage high	ECM
13	P1109	Barometric pressure (BARO) sensor – range/performance problem	ECM
14	–	Idle control system – malfunction	lAC valve, idle speed, hose leak
14	P1519	Idle air control (lAC) valve – circuit failure	Wiring, lAC valve, ECM
17	–	Vehicle speed sensor (VSS) – circuit malfunction/range/ performa-nce problem	Wiring, peedometer, VSS, ECM
20	P1297	Electrical load sensor – circuiVvoltage low	Wiring short circuit, electrical load sensor, ECM
20	P1298	Electrical load sensor – circuiVvoltage high	Wiring open circuit, electrical load sensor, ECM
21	P1253	VTEC system malfunction	Wiring, VTEC solenoid/pressure switch, ECM
22	P1257	VTEC system malfunction	Wiring, VTEC solenoid/pressure switch, ECM
22	P1258	VTEC system malfunction	Wiring, VTEC solenoid/pressure switch, ECM
22	P1259	VTEC system malfunction	Wiring, VTEC solenoid/pressure switch, ECM
23	–	Knock sensor (KS) – circuit malfunction	Wiring, KS, ECM
23	P1324	Knock sensor (KS) – circuiVvoltage low	Wiring, poor connection, KS, ECM
34	–	System voltage – malfunction	Wiring, poor connection, battery, alternator
–	P1549	Generator system – high voltage	Wiring, generator, ECM
–	P16BB	Generator system – low voltage	Wiring, generator, ECM
–	P16BC	Generator system – low voltage	Wiring, generator, ECM
35	P1676	ABS/TCS control module – communication malfunction	Wiring, ABS/TCS control module, ECM
35	P1678	ABS/TCS control module – communication malfunction	Wiring, ABS/TCS control module, ECM
39	–	CAN data bus – malfunction	Wiring, connected system, ECM
40	P1683	Throttle motor – default position spring performance problem	Wiring, throttle sticking/ mechanically damaged, throttle motor
40	P1684	Throttle motor – return spring performance problem	Wiring, throttle sticking/ mechanically damaged, throttle motor
Civic 017A6/ K20A3/CR-V/ Accord F23A4: 41	–	Heated oxygen sensor (H02S) – front – no activity detected	Wiring, H02S, ECM
Except Civic 017A6/K20A3/ CR-V/Accord F23A4: 41	–	Heated oxygen sensor (H02S) – front – circuit malfunction	Wiring, H02S, ECM
Civic 017A6/ K20A3/CR-V/ Accord F23A4: 41	P1166	Heated oxygen sensor (H02S) – front – heater circuit problem	Wiring, H02S, ECM
Except Civic 017A6/K20A3/ CR-V/Accord F23A4: 41	P1166	Heated oxygen sensor (H02S) – front – heater circuit problem	Wiring, H02S, ECM
Civic 017A6/ K20A3/CR-V/ Accord F23A4: 41	P1167	Heated oxygen sensor (H02S) – front – heater circuit malfunction	Wiring, H02S
Except Civic 017A6/K20A3/ CR-V/Accord F23A4: 41	P1167	Heated oxygen sensor (H02S) – front – heater circuit malfunction	Wiring, H02S
45	–	Mixture too lean/rich	Fuel system, front H02S, injectors, MAP sensor, wiring, mechanical fault
Civic 017A6/ K20A3/CR-V/ Accord F24A4: 48	P1157	Heated oxygen sensor (H02S) – front – circuit malfunction	Wiring, H02S, ECM
52000 2005 -+: 48	P1157	Heated oxygen sensor (H02S) – front – circuit/voltage high	Wiring, H02S, ECM
Civic 017A6/ K20A3/CR-V: 48	P1158	Heated oxygen sensor (H02S) – front – low voltage negative terminal	Wiring, H02S, ECM
Civic 017A6/ K20A3/CR-V: 48	P1159	Heated oxygen sensor (H02S) – front – low voltage positive terminal	Wiring, H02S, ECM
Civic D17A6/ K20A3/Accord F23A4: 48	P1162	Heated oxygen sensor (H02S)- front – circuit malfunction	Wiring, H02S
Except Civic 017A6/K20A3/ Accord F23A4: 48	P1162	Heated oxygen sensor (H02S) – front – circuit malfunction	Wiring, H02S
54	–	Crankshaft position (CKP) sensor B – circuit malfunction	Wiring, poor connection, CKP sensor, ECM
56	P1009	Camshaft position (CMP), intake/left/front, bank 1 – circuit malfunction/timing over-advanced/ system performance	Wiring, valve timing, engine mechanical fault, CMP actuator, ECM
57	–	Camshaft position (CMP) sensor A, bank 1 – circuit malfunction/range/ performance problem	Insecure sensor/rotor, air gap, wiring, poor connection, CMP sensor, ECM
58	P1366	Camshaft position (CMP) sensor – top dead center sensor 2 – intermittent signal	Wiring, CMP sensor, ECM
58	P1367	Camshaft position (CMP) sensor – top dead center sensor 2 – no signal	Wiring, CMP sensor, ECM
60	–	Secondary air injection (AIR) system – malfunction/incorrect flow detected	Wiring, AIR pump, AIR valve, AIR hose(s), AIR solenoid, ECM
60	P1410	Secondary air injection (AIR) pump – malfunction	Wiring, AIR pump relay, AIR pump, ECM
61	–	Heated oxygen sensor (H02S) – front – slow response	H02S, exhaust system
Civic 017A6/ Accord F23A4: 61	P1149	Heated oxygen sensor (H02S) – front – range/performance problem	H02S
Except Civic 017AS/Accord F23A4: 61	P1149	Heated oxygen sensor (H02S) – front – range/performance problem	H02S
Except Civic 017A6/K20A3/ CR-V/Accord F23A4: 61	P1163	Heated oxygen sensor (H02S) – front – circuit/slow response	H02S, exhaust system
Civic 017A6/ K20A3/CR-V/ Accord F23A4: 61	P1163	Heated oxygen sensor (H02S)- front – circuit/slow response	H02S, exhaust system
Except Civic 017A6/K20A3/ CR-V/Accord F23A4: 61	P1164	Heated oxygen sensor (H02S) – front – range/performance problem	H02S
Civic 017A6/ K20A3/CR-V/ Accord F23A4: 61	P1164	Heated oxygen sensor (H02S) – front – range/performance problem	H02S
Except Civic 017A6/K20A3/ Accord F23A4: 61	P1165	Heated oxygen sensor (H02S) – front – range/performance problem	H02S
Civic D17A6/ K20A3/Accord F23A4: 61	P1165	Heated oxygen sensor (H02S) – front – range/performance problem	H02S
52000 2005 -+: 61	P1172	Heated oxygen sensor (H02S) – front – circuit/voltage high	Wiring, H02S, ECM
63	–	Heated oxygen sensor (H02S) – rear – slow response/circuit/voltage low/high	Wiring, H02S, ECM
65	–	Heated oxygen sensor (H02S) – rear – heater circuit problem	Wiring, H02S, ECM
67	–	Catalytic converter – efficiency below limit	Catalytic converter, rear H02S
70	–	AT- lock-up clutch not engaging/no gear shift	Wiring, mainshaft speed sensor, countershaft speed sensor, lock-up control system, shift solenoid (SS) A/8/C, ECM, TCM
70	–	CVT – poor acceleration	Wiring, ignition coil, TCM
70	P1705	AT- gear shift malfunction	Wiring, range position switch, ECM
70	P1705	CVT – gear shift malfunction	Wiring, range position switch, TCM
70	P1706	Automatic transmission	Wiring, range position switch, ECM
70	P1706	CVT – gear shift malfunction	Wiring, range position switch, TCM
70	P1717	AT- gear selection malfunction	Wiring, range position switch, ECM
70	P1730	AT- gear shift malfunction	Transmission fluid, wiring, shift solenoid A/8/D, ECM
70	P1731	AT- gear shift malfunction	Transmission fluid, wiring, shift solenoid E, AT clutch pressure control solenoid A, ECM
70	–	AT- gear shift malfunction	Transmission fluid, wiring, shift solenoid 8/C, ECM
70	P1733	AT- gear shift malfunction	Transmission fluid, wiring, shift solenoid D, AT clutch pressure control solenoid C, ECM
70	P1734	AT – gear shift malfunction	Transmission fluid, wiring, shift solenoid 8/C, ECM
70	P1738	Automatic transmission	Wiring, clutch pressure switch 2, ECM
70	P1739	Automatic transmission	Wiring, clutch pressure switch 3, ECM
70	P1740	AT – 4th clutch pressure switch	Wiring, range position switch, 4th clutch pressure switch, ECM
70	P1750	AT – hydraulic system mechanical malfunction	Wiring, shift solenoids, ECM, transmission mechanical fault
70	P1751	AT – hydraulic system mechanical malfunction	Wiring, shift solenoids, ECM, transmission mechanical fault
70	P1753	AT – lock-up clutch not engaging/disengaging	Wiring, lock-up control solenoid, ECM
70	P1753	AT- no gear shift	Wiring, lock-up control solenoid, ECM
70	P1768	AT – no gear shift	Wiring, clutch pressure control solenoid A, ECM
70	P1768	AT – lock-up clutch not engaging	Wiring, clutch pressure control solenoid A, ECM
70	P1773	AT- no gear shift	Clutch pressure control solenoid 8, ECM
70	P1773	AT – lock-up clutch not engaging	Clutch pressure control solenoid 8, ECM
70	P1790	AT- lock-up clutch not engaging	Wiring, TP sensor, TCM
70	P1792	AT- lock-up clutch not engaging	Wiring, ECT sensor, TCM
70	P1793	Automatic transmission	Wiring, MAP sensor, TCM
70	P1870	CVT – poor acceleration	Wiring, shift control linear solenoid, TCM
70	P1873	CVT – poor acceleration	Wiring, PH-PL control linear solenoid, TCM
70	P1876	CVT – poor acceleration	Wiring, drive pulley pressure control valve
70	P1877	CVT – poor acceleration	Wiring, drive pulley pressure control valve
70	P1878	CVT – poor acceleration	Wiring, start clutch control linear solenoid, TCM
70	P1879	CVT – poor acceleration	Wiring, start clutch control linear solenoid, TCM
70	P1880	CVT – poor acceleration	Wiring, start clutch control linear solenoid, TCM
70	P1881	CVT – poor acceleration	Wiring, start clutch control linear solenoid, TCM
70	P1882	Constantly variable transmission (CVT)	Wiring, inhibitor solenoid, TCM
70	P1885	CVT – poor acceleration	Wiring, drive pulley speed sensor, TCM
70	P1886	CVT – poor acceleration	Wiring, driven pulley speed sensor, TCM
70	P1888	CVT – poor acceleration	Wiring, speed sensor 1, TCM
70	P1889	CVT – poor acceleration	Wiring, speed sensor 2, TCM
70	P1890	CVT – poor acceleration	Shift control system
70	P1891	CVT – poor acceleration	Start clutch control system
70	P1892	CVT – poor acceleration	Wiring, drive pulley pressure control valve, TCM
70	P1893	CVT – poor acceleration	Wiring, drive pulley pressure control valve, TCM
70	P1894	CVT – poor acceleration	Wiring, drive pulley pressure control valve, TCM
70	P1895	CVT – poor acceleration	Wiring, drive pulley pressure control valve, TCM
70	P1896	CVT – poor acceleration	Wiring, drive pulley pressure control valve, TCM
70	P1897	CVT – poor acceleration	Wiring, drive pulley pressure control valve, TCM
70	P1898	CVT – poor acceleration	Wiring, drive pulley pressure control valve, TCM
70	P1899	CVT – poor acceleration	Wiring, drive pulley pressure control valve, TCM
71	–	Cylinder No.1 – misfire	Fuel/ignition/VTEC system, injector, wiring, mechanical fault
72	–	Cylinder No.2 – misfire	Fuel/ignitionNTEC system, injector, wiring, mechanical fault
73	–	Cylinder No.3 – misfire	Fuel/ignitionNTEC system, injector, wiring, mechanical fault
74	–	Cylinder No.4 – misfire	Fuel/ignitionNTEC system, injector, wiring, mechanical fault
75	–	Cylinder No.5 – misfire	Fuel/ignitionNTEC system, injector, wiring, mechanical fault
76	–	Cylinder No.6 – misfire	Fuel/ignitionNTEC system, injector, wiring, mechanical fault
–	P1399	Random misfire	Fuel/ignition system, MAP sensor, lAC valve
80	–	Exhaust gas recirculation (EGR) system – insufficient flow	EGR valve, EGR solenoid, hose leak/blockage
83	–	Secondary air injection (AIR) pump current sensor – circuit/voltage high/low	Wiring, current sensor, ECM
83	P1415	AIR pump electrical current sensor – circuit low	Wiring, AIR pump electrical current sensor, ECM
83	P1416	AIR pump electrical current sensor – circuit high	Wiring, AIR pump electrical current sensor, ECM
86	–	Engine coolant temperature (ECT) sensor – range/performance problem	ECT sensor, cooling system
86	P1116	Engine coolant temperature (ECT) sensor – range/performance problem	ECT sensor, cooling system
87	–	Thermostat – range/performance problem	Thermostat, cooling system
90	–	Evaporative emission (EVAP) system – small leak detected	Mechanical fault, hose connection(s), intake leak, EVAP canister, EVAP canister purge valve, EVAP pressure sensor
90	P1456	Evaporative emission (EVAP) canister purge system (fuel tank system) – leak detected	Hose, fuel tank/pressure sensor, fuel filler cap, EVAP valve/ bypass solenoid, EVAP two way valve, EVAP canister/vent valve, wiring
90	P1457	Evaporative emission (EVAP) canister purge system (canister system) – leak detected	Hose, fuel tank/pressure sensor, fuel filler cap, EVAP valve/ bypass solenoid, EVAP two way valve, EVAP canister/vent valve, wiring
91	–	Fuel tank pressure sensor- range/performance problem/circuit/ voltage low/high	Hose leak/blockage, wiring, pressure sensor, ECM
91	P1454	Fuel tank pressure sensor- range/performance problem	Wiring, hose, fuel tank pressure sensor, fuel filler cap, EVAP canister/vent valve, ECM
91	P1457	Fuel tank pressure sensor- range/performance problem	Hose leak/blockage, wiring, pressure sensor, ECM
92	–	Evaporative emission (EVAP) canister purge valve – circuit malfunction	Wiring, EVAP canister purge valve, ECM
Civic 017A7: 95	–	Fuel rail pressure (FRP) sensor- range/performance problem/circuit malfunction	Wiring, FRP sensor
Civic D17A7: 96	P1182	Fuel temperature sensor- low input	Wiring short to ground, fuel temperature sensor, ECM
Civic D17A7: 96	P1183	Fuel temperature sensor- high input	Wiring short to positive, fuel temperature sensor, ECM
Civic D17A7: 97	P1192	Fuel tank pressure sensor- low input	Wiring short to ground, fuel tank sensor
Civic D17A7: 97	P1193	Fuel tank pressure sensor- high input	Wiring short to positive, fuel tank sensor
Civic D17A7: 98	P1187	Fuel tank temperature sensor- low input	Wiring short to ground, fuel tank temperature sensor, ECM
Civic D17A7: 98	P1188	Fuel tank temperature sensor- high input	Wiring short to positive, fuel tank temperature sensor, ECM
–	P1607	Engine control module (ECM) – internal circuit failure A	ECM
101	–	Heated oxygen sensor (H02S) 3 – circuit/voltage low	Wiring short circuit, H025, ECM
103	–	Heated oxygen sensor (H02S) 3 – slow response/circuit/voltage high	Wiring open circuit, H025, ECM
104	–	Heated oxygen sensor (H02S) 3 – heater circuit problem	Wiring, H025, ECM
105	P1420	NOx adsorptive catalyst system – efficiency below limit	NOx adsorptive three way catalyst
106	P1077	Intake manifold tuning valve system malfunction – low RPM	Hose leak/blockage, wiring, intake manifold tuning valve, intake manifold tuning valve actuator, ECM
106	P1078	Intake manifold tuning valve system malfunction – high RPM	Hose leak/blockage, wiring, intake manifold tuning valve, intake manifold tuning valve actuator, ECM
107	–	Intake manifold tuning valve position sensor – circuit/voltage high/low	Wiring, intake manifold tuning valve position sensor, ECM
109	P1505	Positive crankcase ventilation (PCV) – air leak	Hose leak/blockage, PCV system, throttle body
111	P1130	Heated oxygen sensor (H02S) 2/3 – faulty components	H025 2, H025 3
117	–	Evaporative emission system, vent control – circuit low/high	Wiring, EVAP valve
122	–	Output shaft speed (OSS) sensor- circuit malfunction	Wiring, OSS sensor, ECM
131	–	Engine control module (ECM) – KAM error	ECM
135	–	ECM power relay control – circuit open	Wiring, ECM relay
151	–	Heated oxygen sensor (H02S) 1, bank 1 – no activity detected	Wiring, H02S, ECM
151	–	Heated oxygen sensor (H02S) 1, bank 1, heater control – circuit malfunction	Wiring, H02S, ECM
152	–	Heated oxygen sensor (H02S) 1, bank 2 – no activity detected	Wiring, H02S, ECM
152	–	Heated oxygen sensor (H02S) 1, bank 2, heater control – circuit malfunction	Wiring, H02S, ECM
153	–	System too lean/rich, bank 1	Intake blocked, intake/exhaust leak, EVAP canister purge valve, fuel pressure, EGR system, injector(s), H02S, AIR system, hose connection(s)
154	–	System’ too lean/rich, bank 2	Intake blocked, intake/exhaust leak, EVAP canister purge valve, fuel pressure, EGR system, injector(s), H02S, AIR system, hose connection(s)
157	–	Heated oxygen sensor (H02S) 1, bank 1 – slow response	Heating inoperative, wiring, H02S
158	–	Heated oxygen sensor (H02S) 1, bank 2 – slow response	Heating inoperative, wiring, H02S
161	–	Heated oxygen sensor (H02S) 2, bank 1 – low/high voltage	Exhaust leak, wiring, H02S, ECM
161	–	Heated oxygen sensor (H02S) 2, bank 1 – slow response	Heating inoperative, wiring, H02S, ECM
162	–	Heated oxygen sensor (H02S) 2, bank 2 – low/high voltage	Exhaust leak, wiring, H02S, ECM
162	–	Heated oxygen sensor (H02S) 2, bank 2 – slow response	Heating inoperative, wiring, H02S, ECM
163	–	Heated oxygen sensor (H02S) 2, bank 1, heater control – circuit malfunction	Wiring, H02S, ECM
164	–	Heated oxygen sensor (H02S) 2, bank 2, heater control – circuit malfunction	Wiring, H02S, ECM
165	–	Catalytic converter system, bank 1 – efficiency below threshold	Catalytic converter, wiring, H025 2
166	–	Catalytic converter system, bank 2 – efficiency below threshold	Catalytic converter, wiring, H025 2
–	P1171	Heated oxygen sensor (H02S) 1 – circuit malfunction	Wiring, H025, ECM
–	P1172	Heated oxygen sensor (H02S) 1 – circuit malfunction	Wiring, H025, ECM

Trouble code identification – temporary trouble codes

Flash code	Temporary OBD-11 code	Fault location	Probable cause
–	PO, P2, UO	Refer to OBD-11 trouble code tables	–
1	–	Heated oxygen sensor (H02S) – front	Wiring, H025, fuel system, ECM
5	P1128	Manifold absolute pressure (MAP) sensor – pressure lower than expected	MAP sensor
5	P1129	Manifold absolute pressure (MAP) sensor – pressure higher than expected	MAP sensor
7	P1121	Throttle position (TP) sensor – position lower than expected	TP sensor
7	P1122	Throttle position (TP) sensor – position higher than expected	TP sensor
12	P1491	Exhaust gas recirculation (EGR) sys em – valve lift insufficient	Wiring, EGR valve/position sensor, ECM
13	P1106	Barometric pressure (BARO) sensor – range/performance problem	ECM
14	–	Idle control system – malfunction	lAC valve, idle speed, hose leak
21	P1257	VTEC system malfunction	Wiring, VTEC solenoid/pressure switch, ECM
22	P1257	VTEC system malfunction	Wiring, VTEC solenoid/pressure switch, ECM
45	–	Mixture too lean/rich	Fuei/EVAP system, front H025, injectors, wiring, mechanical fault
52000 2005 -+: 48	P1157	Heated oxygen sensor (H02S) – front – circuit/voltage high	Wiring, H025, ECM
56	–	Camshaft position (CMP), intake/lefUfront, bank 1 – timing over-advanced/system performance	Valve timing, engine mechanical fault, CMP actuator
60	–	Secondary air injection (AIR) system – malfunction/incorrect flow detected	Wiring, AIR pump, AIR valve, AIR hose(s), AIR solenoid, ECM
60	P1410	Secondary air injection (AIR) pump – malfunction	Wiring, AIR pump relay, AIR pump, ECM
61	–	Heated oxygen sensor (H02S) – front – slow response	H02S, exhaust system
Civic D17A6: 61	P1149	Heated oxygen sensor (H02S) – front – range/performance problem	H02S
Except Civic D17A6: 61	P1149	Heated oxygen sensor (H02S) – front – range/performance problem	H02S
Except Civic D17A6/K20A3: 61	P1163	Heated oxygen sensor (H02S) – front – circuit/slow response	H02S, exhaust system
Civic D17A6/ K20A3: 61	P1163	Heated oxygen sensor (H02S) – front – circuit/slow response	H02S, exhaust system
Except Civic D17A6/K20A3: 61	P1164	Heated oxygen sensor (H02S) – front- range/performance·problem	H02S
Civic D17A6/ K20A3: 61	P1164	Heated oxygen sensor (H02S) – front – range/performance problem	H02S
Except Civic D17A6/K20A3: 61	P1165	Heated oxygen sensor (H02S) – front – range/performance problem	H02S
Civic 017A6/ K20A3: 61	P1165	Heated oxygen sensor (H02S)- front – range/performance problem	H02S
52000 2005 -+: 61	P1172	Heated oxygen sensor (H02S) – front – circuit/voltage high	Wiring, H02S, ECM
63	–	Heated oxygen sensor (H02S) – rear – slow response/circuit/voltage low/high	Wiring, H02S, ECM
67	–	Catalytic converter – efficiency below limit	Catalytic converter, rear H02S
71	P1399	Cylinder No.1 – misfire	Fuel/ignitionNTEC system, injector, wiring, mechanical fault
72	P1399	Cylinder No.2 – misfire	FuellignitionNTEC system, injector, wiring, mechanical fault
73	P1399	Cylinder No.3 – misfire	Fuel/ignitionNTEC system, injector, wiring, mechanical fault
74	P1399	Cylinder No.4 – misfire	FuellignitionNTEC system, injector, wiring, mechanical fault
75	P1399	Cylinder No.5 – misfire	Fuel/ignitionNTEC system, injector, wiring, mechanical fault
76	P1399	Cylinder No.6 – misfire	Fuel/ignitionNTEC system, injector, wiring, mechanical fault
–	P1399	Random misfire	Fuel/ignition system, MAP sensor, lAC valve
80	–	Exhaust gas recirculation (EGR) solenoid – insufficient flow	EGR valve, hose leak/blockage
86	–	Engine coolant temperature (ECT) sensor – range/performance problem	ECT sensor, cooling system
86	P1116	Engine coolant temperature (ECT) sensor – range/performance problem	ECT sensor, cooling system
87	P1486	Thermostat – range/performance problem	Thermostat, cooling system
90	P1456	Evaporative emission (EVAP) canister purge system (fuel tank system) – leak detected	Hose,. fuel tank/pressure sensor, fuel filler cap, EVAP valve/ bypass solenoid, EVAP two way valve, EVAP canister/vent valve, wiring
90	P1457	Evaporative emission (EVAP) canister purge system (canister system)- leak detected	Hose, fuel tank/pressure sensor, fuel filler cap, EVAP valve/ bypass solenoid, EVAP two way valve, EVAP canister/vent valve, wiring
91	–	Fuel tank pressure sensor – range/performance problem/circuiU voltage low/high	Hose leak/blockage, wiring, pressure sensor, ECM
101	–	Heated oxygen sensor (H02S) 3 – circuiUvoltage low	Wiring short circuit, H02S, ECM
103	–	Heated oxygen sensor (H02S) 3 – slow response/circuiUvoltage high	Wiring open circuit, H02S, ECM
104	–	Heated oxygen sensor (H02S) 3 – heater circuit problem	Wiring, H02S, ECM
105	P1420	NOx adsorptive catalyst system – efficiency below limit	NOx adsorptive three way catalyst
109	P1505	Positive crankcase ventilation (PCV) – air leak	Hose leak/blockage, PCV system, throttle body
111	P1130	Heated oxygen sensor (H02S) 2/3 – faulty components	H02S 2, H02S 3