Honda OBD/OBD2 Codes >> 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)

ModelYearEngine identificationSystem
Accord 2.3L1998-02F23A1/4/5PGM-FI
Accord  2.4L2003-04F24A4PGM-FI
Accord  3.0L1998-04J30A1PGM-FI
Civic  1.7L2001-05D17A1/A2/A6/A7PGM-FI
Civic 2.0L2002-05K20A3PGM-FI
CR-V 2.4L2002-06K24A1PGM-FI
Odyssey 3.5L1999-04J35A1/A4PGM-FI
S2000 2.0L2000-03F20C1PGM-FI
S2000 2.2L2004-08F22C1PGM-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.


  • 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 codePermanent OBD-11 codeFault locationProbable cause
PO, P2, UORefer to OBD-11 trouble code tables
0P1630Transmission control module   (TCM) processor errorTCM
1Heated oxygen sensor (H02S) – front – circuit/voltage low/highWiring open/short circuit, H02S, fuel system, ECM
3Manifold absolute pressure (MAP)   sensor – circuit/voltage high/lowWiring, MAP sensor, ECM
4Crankshaft position (CKP) sensor – circuit malfunction/range/ performance problemWiring, CKP sensor, valve timing, ECM
5P1128Manifold absolute pressure (MAP) sensor – pressure lower than expectedMAP sensor
5P1129Manifold absolute pressure (MAP) sensor – pressure higher than expectedMAP sensor
6Engine coolant temperature (ECT)   sensor – circuit/voltage low/highWiring short/open circuit, ECT   sensor, ECM
7Throttle position (TP) sensor – circuit/voltage low/highWiring, TP sensor, ECM
7P1121Throttle position (TP) sensor- position lower than expectedTP sensor
7P1122Throttle position (TP) sensor – position higher than expectedTP sensor
Accord   F23A1/4/5: 8P1359Crankshaft position (CKP) sensor – top dead center sensor 1 – connector disconnectionWiring, ECM
Except Accord   F23A1/4/5: 8P1359Camshaft position (CMP) sensor – top dead center sensor 1 – connector disconnectionWiring, ECM
Accord   F23A1/4/5: 8P1361Crankshaft position (CKP) sensor- top dead center sensor 1 – intermittent signalWiring, CKP sensor, ECM
Except Accord   F23A1/4/5: 8P1361Camshaft position (CMP) sensor – top dead center sensor 1 – intermittent signalWiring, CMP sensor, ECM
Accord   F23A1/4/5: 8P1362Crankshaft position (CKP) sensor – top dead center sensor 1 – no signalWiring, CKP sensor, ECM
Except Accord   F23A1/4/5: 8P1362Camshaft position (CMP) sensor – top dead center sensor 1 – no signalWiring, CMP sensor, ECM
9P1381Camshaft position (CMP) sensor- intermittent signalWiring, CMP sensor, ECM
9P1382Camshaft position (CMP) sensor- no signalWiring, CMP sensor, ECM
10Intake air temperature (IAT)   sensor – circuiUvoltage low/highWiring short/open circuit, IAT   sensor, ECM
12Exhaust gas recirculation (EGR) system – range/performance problemHose leak/blockage, wiring, EGR   valve/solenoid
12Exhaust gas recirculation (EGR) valve position sensor A – high input  Wiring short to positive, EGR  
12P1491Exhaust gas recirculation (EGR)   system – valve lift insufficientWiring, EGR valve/position sensor, ECM
12P1498Exhaust gas recirculation (EGR) valve position sensor – voltage . highWiring, EGR valve/position sensor, ECM
13P1106Barometric pressure (BARO) sensor – range/performance problemECM
13P1107Barometric pressure (BARO)   sensor – circuit/voltage lowECM
13P1108Barometric pressure (BARO)   sensor – circuit/voltage highECM
13P1109Barometric pressure (BARO) sensor – range/performance problemECM
14Idle control system – malfunctionlAC valve, idle speed, hose leak
14P1519Idle air control (lAC) valve – circuit failureWiring, lAC valve, ECM
17Vehicle speed sensor (VSS) – circuit malfunction/range/ performa-nce problemWiring, peedometer, VSS, ECM
20P1297Electrical load sensor – circuiVvoltage lowWiring short circuit, electrical load sensor, ECM
20P1298Electrical load sensor – circuiVvoltage highWiring open circuit, electrical load sensor, ECM
21P1253VTEC system malfunctionWiring, VTEC solenoid/pressure switch, ECM
22P1257VTEC system malfunctionWiring, VTEC solenoid/pressure switch, ECM
22P1258VTEC system malfunctionWiring, VTEC solenoid/pressure switch, ECM
22P1259VTEC system malfunctionWiring, VTEC solenoid/pressure switch, ECM
23Knock sensor (KS) – circuit malfunctionWiring, KS, ECM
23P1324Knock sensor (KS) – circuiVvoltage lowWiring, poor connection, KS, ECM
34System voltage – malfunctionWiring, poor connection, battery, alternator
P1549Generator system – high voltageWiring, generator, ECM
P16BBGenerator system – low voltageWiring, generator, ECM
P16BCGenerator system – low voltageWiring, generator, ECM
35P1676ABS/TCS control module – communication malfunctionWiring, ABS/TCS control module, ECM
35P1678ABS/TCS control module – communication malfunctionWiring, ABS/TCS control module, ECM
39CAN data bus – malfunctionWiring, connected system, ECM
40P1683Throttle motor – default position spring performance problemWiring, throttle sticking/ mechanically damaged, throttle motor
40P1684Throttle motor – return spring performance problemWiring, throttle sticking/ mechanically damaged, throttle motor
Civic 017A6/ K20A3/CR-V/ Accord F23A4: 41Heated oxygen sensor (H02S) – front – no activity detectedWiring, H02S, ECM
Except Civic   017A6/K20A3/ CR-V/Accord F23A4: 41Heated oxygen sensor (H02S) – front – circuit malfunctionWiring, H02S, ECM
Civic 017A6/ K20A3/CR-V/ Accord F23A4: 41P1166Heated oxygen sensor (H02S) – front – heater circuit problemWiring, H02S, ECM
Except Civic   017A6/K20A3/ CR-V/Accord F23A4: 41P1166Heated oxygen sensor (H02S) – front – heater circuit problemWiring, H02S, ECM
Civic 017A6/ K20A3/CR-V/ Accord F23A4: 41P1167Heated oxygen sensor (H02S) – front – heater circuit malfunctionWiring, H02S
Except Civic   017A6/K20A3/ CR-V/Accord F23A4: 41P1167Heated oxygen sensor (H02S) – front – heater circuit malfunctionWiring, H02S
45Mixture too lean/richFuel system, front H02S, injectors, MAP sensor, wiring,   mechanical fault
Civic 017A6/ K20A3/CR-V/ Accord F24A4: 48P1157Heated oxygen sensor (H02S) – front – circuit malfunctionWiring, H02S, ECM
52000 2005 -+: 48P1157Heated oxygen sensor (H02S) – front – circuit/voltage highWiring, H02S, ECM
Civic 017A6/ K20A3/CR-V: 48P1158Heated oxygen sensor (H02S) – front – low voltage negative terminalWiring, H02S, ECM
Civic 017A6/ K20A3/CR-V: 48P1159Heated oxygen sensor (H02S) – front – low voltage positive terminalWiring, H02S, ECM
Civic D17A6/ K20A3/Accord F23A4: 48P1162Heated oxygen sensor (H02S)- front – circuit malfunctionWiring, H02S
Except Civic   017A6/K20A3/ Accord F23A4: 48P1162Heated oxygen sensor (H02S) – front – circuit malfunctionWiring, H02S
54Crankshaft position (CKP) sensor   B – circuit malfunctionWiring, poor connection, CKP   sensor, ECM
56P1009Camshaft position (CMP), intake/left/front, bank 1 – circuit malfunction/timing over-advanced/ system performanceWiring, valve timing, engine mechanical fault, CMP actuator, ECM
57Camshaft position (CMP) sensor A, bank 1 – circuit malfunction/range/ performance problemInsecure sensor/rotor, air gap, wiring, poor connection, CMP sensor, ECM
58P1366Camshaft position (CMP) sensor – top dead center sensor 2 – intermittent signalWiring, CMP sensor, ECM
58P1367Camshaft position (CMP) sensor – top dead center sensor 2 – no signalWiring, CMP sensor, ECM
60Secondary air injection (AIR) system – malfunction/incorrect flow detectedWiring, AIR pump, AIR valve, AIR   hose(s), AIR solenoid, ECM
60P1410Secondary air injection (AIR)   pump – malfunctionWiring, AIR pump relay, AIR   pump, ECM
61Heated oxygen sensor (H02S) – front – slow responseH02S, exhaust system
Civic 017A6/ Accord F23A4: 61P1149Heated oxygen sensor (H02S) – front – range/performance problemH02S
Except Civic   017AS/Accord   F23A4: 61P1149Heated oxygen sensor (H02S) – front – range/performance problemH02S
Except Civic   017A6/K20A3/ CR-V/Accord F23A4: 61P1163Heated oxygen sensor (H02S) – front – circuit/slow responseH02S, exhaust system
Civic 017A6/ K20A3/CR-V/ Accord F23A4: 61P1163Heated oxygen sensor (H02S)- front – circuit/slow responseH02S, exhaust system
Except Civic   017A6/K20A3/ CR-V/Accord F23A4: 61P1164Heated oxygen sensor (H02S) – front – range/performance problemH02S
Civic 017A6/ K20A3/CR-V/ Accord F23A4: 61P1164Heated oxygen sensor (H02S) – front – range/performance problemH02S
Except Civic 017A6/K20A3/ Accord F23A4: 61P1165Heated oxygen sensor (H02S) – front – range/performance problemH02S
Civic D17A6/ K20A3/Accord F23A4: 61P1165Heated oxygen sensor (H02S) – front – range/performance problemH02S
52000 2005 -+: 61P1172Heated oxygen sensor (H02S) – front – circuit/voltage highWiring, H02S, ECM
63Heated oxygen sensor (H02S) – rear – slow response/circuit/voltage low/highWiring, H02S, ECM
65Heated oxygen sensor (H02S) – rear – heater circuit problemWiring, H02S, ECM
67Catalytic converter – efficiency below limitCatalytic converter, rear H02S
70AT- lock-up clutch not engaging/no gear shiftWiring, mainshaft speed sensor, countershaft speed sensor,   lock-up control system, shift solenoid (SS) A/8/C, ECM, TCM
70CVT – poor accelerationWiring, ignition coil, TCM
70P1705AT- gear shift malfunctionWiring, range position switch, ECM
70P1705CVT – gear shift malfunctionWiring, range position switch, TCM
70P1706Automatic transmissionWiring, range position switch, ECM
70P1706CVT – gear shift malfunctionWiring, range position switch, TCM
70P1717AT- gear selection malfunctionWiring, range position switch, ECM
70P1730AT- gear shift malfunctionTransmission fluid, wiring, shift solenoid A/8/D, ECM
70P1731AT- gear shift malfunctionTransmission fluid, wiring, shift solenoid E, AT clutch pressure control solenoid A, ECM
70AT- gear shift malfunctionTransmission fluid, wiring, shift solenoid 8/C, ECM
70P1733AT- gear shift malfunctionTransmission fluid, wiring, shift solenoid D, AT clutch pressure control solenoid C, ECM
70P1734AT – gear shift malfunctionTransmission fluid, wiring, shift solenoid 8/C, ECM
70P1738Automatic transmissionWiring, clutch pressure switch 2, ECM
70P1739Automatic transmissionWiring, clutch pressure switch 3, ECM
70P1740AT – 4th clutch pressure switchWiring, range position switch,   4th clutch pressure switch, ECM
70P1750AT – hydraulic system mechanical malfunctionWiring, shift solenoids, ECM, transmission mechanical fault
70P1751AT – hydraulic system mechanical malfunctionWiring, shift solenoids, ECM, transmission mechanical fault
70P1753AT – lock-up clutch not engaging/disengagingWiring, lock-up control solenoid, ECM
70P1753AT- no gear shiftWiring, lock-up control solenoid, ECM
70P1768AT – no gear shiftWiring, clutch pressure control solenoid A, ECM
70P1768AT – lock-up clutch not engagingWiring, clutch pressure control solenoid A, ECM
70P1773AT- no gear shiftClutch pressure control solenoid 8, ECM
70P1773AT – lock-up clutch not engagingClutch pressure control solenoid 8, ECM
70P1790AT- lock-up clutch not engagingWiring, TP sensor, TCM
70P1792AT- lock-up clutch not engagingWiring, ECT sensor, TCM
70P1793Automatic transmissionWiring, MAP sensor, TCM
70P1870CVT – poor accelerationWiring, shift control linear solenoid, TCM
70P1873CVT – poor accelerationWiring, PH-PL control linear solenoid, TCM
70P1876CVT – poor accelerationWiring, drive pulley pressure control valve
70P1877CVT – poor accelerationWiring, drive pulley pressure control valve
70P1878CVT – poor accelerationWiring, start clutch control linear solenoid, TCM
70P1879CVT – poor accelerationWiring, start clutch control linear solenoid, TCM
70P1880CVT – poor accelerationWiring, start clutch control linear solenoid, TCM
70P1881CVT – poor accelerationWiring, start clutch control linear solenoid, TCM
70P1882Constantly variable transmission   (CVT)Wiring, inhibitor solenoid, TCM
70P1885CVT – poor accelerationWiring, drive pulley speed sensor, TCM
70P1886CVT – poor accelerationWiring, driven pulley speed sensor, TCM
70P1888CVT – poor accelerationWiring, speed sensor 1, TCM
70P1889CVT – poor accelerationWiring, speed sensor 2, TCM
70P1890CVT – poor accelerationShift control system
70P1891CVT – poor accelerationStart clutch control system
70P1892CVT – poor accelerationWiring, drive pulley pressure control valve, TCM
70P1893CVT – poor accelerationWiring, drive pulley pressure control valve, TCM
70P1894CVT – poor accelerationWiring, drive pulley pressure control valve, TCM
70P1895CVT – poor accelerationWiring, drive pulley pressure control valve, TCM
70P1896CVT – poor accelerationWiring, drive pulley pressure control valve, TCM
70P1897CVT – poor accelerationWiring, drive pulley pressure control valve, TCM
70P1898CVT – poor accelerationWiring, drive pulley pressure control valve, TCM
70P1899CVT – poor accelerationWiring, drive pulley pressure control valve, TCM
71Cylinder No.1 – misfireFuel/ignition/VTEC system, injector, wiring, mechanical fault
72Cylinder No.2 – misfireFuel/ignitionNTEC system, injector, wiring, mechanical fault
73Cylinder No.3 – misfireFuel/ignitionNTEC system, injector, wiring, mechanical fault
74Cylinder No.4 – misfireFuel/ignitionNTEC system, injector, wiring, mechanical fault
75Cylinder No.5 – misfireFuel/ignitionNTEC system, injector, wiring, mechanical fault
76Cylinder No.6 – misfireFuel/ignitionNTEC system, injector, wiring, mechanical fault
P1399Random misfireFuel/ignition system, MAP   sensor, lAC valve
80Exhaust gas recirculation (EGR)   system – insufficient flowEGR valve, EGR solenoid, hose leak/blockage
83Secondary air injection (AIR) pump current sensor – circuit/voltage high/lowWiring, current sensor, ECM
83P1415AIR pump electrical current sensor – circuit lowWiring, AIR pump electrical current sensor, ECM
83P1416AIR pump electrical current sensor – circuit highWiring, AIR pump electrical current sensor, ECM
86Engine coolant temperature (ECT) sensor – range/performance problemECT sensor, cooling system
86P1116Engine coolant temperature (ECT) sensor – range/performance problemECT sensor, cooling system
87Thermostat – range/performance problemThermostat, cooling system
90Evaporative emission (EVAP)   system – small leak detectedMechanical fault, hose connection(s), intake leak, EVAP canister, EVAP canister purge valve, EVAP pressure sensor
90P1456Evaporative emission (EVAP) canister purge system (fuel tank system) – leak detectedHose, fuel tank/pressure sensor, fuel filler cap, EVAP valve/ bypass solenoid, EVAP two way valve, EVAP canister/vent valve, wiring
90P1457Evaporative emission (EVAP) canister purge system (canister system) – leak detectedHose, fuel tank/pressure sensor, fuel filler cap, EVAP valve/ bypass solenoid, EVAP two way valve, EVAP canister/vent valve, wiring
91Fuel tank pressure sensor- range/performance problem/circuit/ voltage low/highHose leak/blockage, wiring, pressure sensor, ECM
91P1454Fuel tank pressure sensor- range/performance problemWiring, hose, fuel tank pressure sensor, fuel filler cap, EVAP canister/vent valve, ECM
91P1457Fuel tank pressure sensor- range/performance problemHose leak/blockage, wiring, pressure sensor, ECM
92Evaporative emission (EVAP) canister purge valve – circuit malfunctionWiring, EVAP canister purge valve, ECM
Civic 017A7: 95Fuel rail pressure (FRP) sensor- range/performance problem/circuit malfunctionWiring, FRP sensor
Civic D17A7: 96P1182Fuel temperature sensor- low inputWiring short to ground, fuel temperature sensor, ECM
Civic D17A7: 96P1183Fuel temperature sensor- high inputWiring short to positive, fuel temperature sensor, ECM
Civic D17A7: 97P1192Fuel tank pressure sensor- low inputWiring short to ground, fuel tank sensor
Civic D17A7: 97P1193Fuel tank pressure sensor- high inputWiring short to positive, fuel tank sensor
Civic D17A7: 98P1187Fuel tank temperature sensor- low inputWiring short to ground, fuel tank temperature sensor, ECM
Civic D17A7: 98P1188Fuel tank temperature sensor- high inputWiring short to positive, fuel tank temperature sensor, ECM
P1607Engine control module (ECM) – internal circuit failure AECM
101Heated oxygen sensor (H02S) 3 – circuit/voltage lowWiring short circuit, H025, ECM
103Heated oxygen sensor (H02S) 3 – slow response/circuit/voltage highWiring open circuit, H025, ECM
104Heated oxygen sensor (H02S) 3 – heater circuit problemWiring, H025, ECM
105P1420NOx adsorptive catalyst system – efficiency below limitNOx adsorptive three way catalyst
106P1077Intake manifold tuning valve system malfunction – low RPMHose leak/blockage, wiring, intake manifold tuning valve, intake manifold tuning valve actuator, ECM
106P1078Intake manifold tuning valve system malfunction – high RPMHose leak/blockage, wiring, intake manifold tuning valve, intake manifold tuning valve actuator, ECM
107Intake manifold tuning valve position sensor – circuit/voltage high/lowWiring, intake manifold tuning valve position sensor, ECM
109P1505Positive crankcase ventilation   (PCV) – air leakHose leak/blockage, PCV   system, throttle body
111P1130Heated oxygen sensor (H02S)   2/3 – faulty componentsH025 2, H025 3
117Evaporative emission system, vent control – circuit low/highWiring, EVAP valve
122Output shaft speed (OSS) sensor- circuit malfunctionWiring, OSS sensor, ECM
131Engine control module (ECM) – KAM errorECM
135ECM power relay control – circuit openWiring, ECM relay
151Heated oxygen sensor (H02S) 1, bank 1 – no activity detectedWiring, H02S, ECM
151Heated oxygen sensor (H02S) 1, bank 1, heater control – circuit malfunctionWiring, H02S, ECM
152Heated oxygen sensor (H02S) 1, bank 2 – no activity detectedWiring, H02S, ECM
152Heated oxygen sensor (H02S) 1, bank 2, heater control – circuit malfunctionWiring, H02S, ECM
153System too lean/rich, bank 1Intake blocked, intake/exhaust leak, EVAP canister purge valve, fuel pressure, EGR system, injector(s), H02S, AIR system, hose connection(s)
154System’ too lean/rich, bank 2Intake blocked, intake/exhaust leak, EVAP canister purge valve, fuel pressure, EGR system, injector(s), H02S, AIR system, hose connection(s)
157Heated oxygen sensor (H02S) 1, bank 1 – slow responseHeating inoperative, wiring, H02S
158Heated oxygen sensor (H02S) 1, bank 2 – slow responseHeating inoperative, wiring, H02S
161Heated oxygen sensor (H02S) 2, bank 1 – low/high voltageExhaust leak, wiring, H02S, ECM
161Heated oxygen sensor (H02S) 2, bank 1 – slow responseHeating inoperative, wiring, H02S, ECM
162Heated oxygen sensor (H02S) 2, bank 2 – low/high voltageExhaust leak, wiring, H02S, ECM
162Heated oxygen sensor (H02S) 2, bank 2 – slow responseHeating inoperative, wiring, H02S, ECM
163Heated oxygen sensor (H02S) 2, bank 1, heater control – circuit malfunctionWiring, H02S, ECM
164Heated oxygen sensor (H02S) 2, bank 2, heater control – circuit malfunctionWiring, H02S, ECM
165Catalytic converter system,   bank 1 – efficiency below thresholdCatalytic converter, wiring, H025 2
166Catalytic converter system,   bank 2 – efficiency below thresholdCatalytic converter, wiring, H025 2
P1171Heated oxygen sensor (H02S) 1 – circuit malfunctionWiring, H025, ECM
P1172Heated oxygen sensor (H02S) 1 – circuit malfunctionWiring, H025, ECM

Trouble code  identification – temporary trouble codes

Flash codeTemporary OBD-11 codeFault locationProbable cause
PO, P2, UORefer to OBD-11 trouble code tables
1Heated oxygen sensor (H02S) – frontWiring, H025, fuel system, ECM
5P1128Manifold absolute pressure (MAP) sensor – pressure lower than expectedMAP sensor
5P1129Manifold absolute pressure (MAP) sensor – pressure higher than expectedMAP sensor
7P1121Throttle position (TP) sensor – position lower than expectedTP sensor
7P1122Throttle position (TP) sensor – position higher than expectedTP sensor
12P1491Exhaust gas recirculation (EGR)   sys em – valve lift insufficientWiring, EGR valve/position sensor, ECM
13P1106Barometric pressure (BARO) sensor – range/performance problemECM
14Idle control system – malfunctionlAC valve, idle speed, hose leak
21P1257VTEC system malfunctionWiring, VTEC solenoid/pressure switch, ECM
22P1257VTEC system malfunctionWiring, VTEC solenoid/pressure switch, ECM
45Mixture too lean/richFuei/EVAP system, front H025, injectors, wiring, mechanical fault
52000 2005 -+: 48P1157Heated oxygen sensor (H02S) – front – circuit/voltage highWiring, H025, ECM
56Camshaft position (CMP), intake/lefUfront, bank 1 – timing over-advanced/system performanceValve timing, engine mechanical fault, CMP actuator
60Secondary air injection (AIR) system – malfunction/incorrect flow detectedWiring, AIR pump, AIR valve, AIR   hose(s), AIR solenoid, ECM
60P1410Secondary air injection (AIR)   pump – malfunctionWiring, AIR pump relay, AIR   pump, ECM
61Heated oxygen sensor (H02S) – front – slow responseH02S, exhaust system
Civic D17A6: 61P1149Heated oxygen sensor (H02S) – front – range/performance problemH02S
Except Civic   D17A6: 61P1149Heated oxygen sensor (H02S) – front – range/performance problemH02S
Except Civic   D17A6/K20A3: 61P1163Heated oxygen sensor (H02S) – front – circuit/slow responseH02S, exhaust system
Civic D17A6/ K20A3: 61P1163Heated oxygen sensor (H02S) – front – circuit/slow responseH02S, exhaust system
Except Civic   D17A6/K20A3: 61P1164Heated oxygen sensor (H02S) – front- range/performance·problemH02S
Civic D17A6/ K20A3: 61P1164Heated oxygen sensor (H02S) – front – range/performance problemH02S
Except Civic   D17A6/K20A3: 61P1165Heated oxygen sensor (H02S) – front – range/performance problemH02S
Civic 017A6/ K20A3: 61P1165Heated oxygen sensor (H02S)- front – range/performance problemH02S
52000 2005 -+: 61P1172Heated oxygen sensor (H02S) – front – circuit/voltage highWiring, H02S, ECM
63Heated oxygen sensor (H02S) – rear – slow response/circuit/voltage low/highWiring, H02S, ECM
67Catalytic converter – efficiency below limitCatalytic converter, rear H02S
71P1399Cylinder No.1 – misfireFuel/ignitionNTEC system, injector, wiring, mechanical fault
72P1399Cylinder No.2 – misfireFuellignitionNTEC system, injector, wiring, mechanical fault
73P1399Cylinder No.3 – misfireFuel/ignitionNTEC system, injector, wiring, mechanical fault
74P1399Cylinder No.4 – misfireFuellignitionNTEC system, injector, wiring, mechanical fault
75P1399Cylinder No.5 – misfireFuel/ignitionNTEC system, injector, wiring, mechanical fault
76P1399Cylinder No.6 – misfireFuel/ignitionNTEC system, injector, wiring, mechanical fault
P1399Random misfireFuel/ignition system, MAP   sensor, lAC valve
80Exhaust gas recirculation (EGR)   solenoid – insufficient flowEGR valve, hose leak/blockage
86Engine coolant temperature (ECT) sensor – range/performance problemECT sensor, cooling system
86P1116Engine coolant temperature (ECT) sensor – range/performance problemECT sensor, cooling system
87P1486Thermostat – range/performance problemThermostat, cooling system
90P1456Evaporative emission (EVAP) canister purge system (fuel tank system) – leak detectedHose,. fuel tank/pressure sensor, fuel filler cap, EVAP valve/ bypass solenoid, EVAP two way valve, EVAP canister/vent valve, wiring
90P1457Evaporative emission (EVAP) canister purge system (canister system)- leak detectedHose, fuel tank/pressure sensor, fuel filler cap, EVAP valve/ bypass solenoid, EVAP two way valve, EVAP canister/vent valve, wiring
91Fuel tank pressure sensor – range/performance problem/circuiU voltage low/highHose leak/blockage, wiring, pressure sensor, ECM
101Heated oxygen sensor (H02S) 3 – circuiUvoltage lowWiring short circuit, H02S, ECM
103Heated oxygen sensor (H02S) 3 – slow response/circuiUvoltage highWiring open circuit, H02S, ECM
104Heated oxygen sensor (H02S) 3 – heater circuit problemWiring, H02S, ECM
105P1420NOx adsorptive catalyst system – efficiency below limitNOx adsorptive three way catalyst
109P1505Positive crankcase ventilation   (PCV) – air leakHose leak/blockage, PCV   system, throttle body
111P1130Heated oxygen sensor (H02S)   2/3 – faulty componentsH02S 2, H02S 3