Honda OBD/OBD2 Codes >> Honda 92-95 Civic 1.5/1.6L & 92-95 Prelude 2.2/2.3L

General Information

  • Trouble codes are displayed by the malfunction indicator lamp (MIL)
  • Engine control module (ECM) incorporates self-diagnosis function

Accessing Trouble Codes

  • Ensure ignition switched OFF
  • Join together the service check connector terminals Civic Image 1 [1] Prelude Image 1 [2]
  • Switch ignition ON.
  • MIL should flash
  • Trouble codes 1-9 are indicated as follows:
    • Individual short flashes display trouble code
    • A short pause separates each flash
    • A long pause separates each trouble code
  • Trouble codes greater than 9 are indicated as follows:
    • Long flashes indicate the ‘tens’ of the trouble code
    • Short flashes indicate the ‘units’ of the trouble code
    • A short pause separates each flash
    • A long pause separates each trouble code
  • Count MIL flashes and compare with trouble code table below
  • Switch ignition OFF
  • Disconnect the service check connector terminals

Clearing Trouble Codes

  • After the faults have been rectified, erase the trouble codes as follows:
  • Ensure ignition switched OFF
  • Civic – remove fuse No.32 (7.5A) from underhood fusebox for 10 seconds minimum
  • Prelude – remove fuse No.43 (10A) from underhood fusebox for 10 seconds minimum
  • Reinstall fuse
  • Repeat accessing procedure to ensure no data remains in ECM fault memory

 Trouble Codes

92-95 Civic 8V/16V Engine Code: D15B7/B8 

92-95 Civic 1.5/1.6L Engine Code: D15Z1/D16Z693

93 Civic del Sol 1.5L/1.6L Engine Code: D15B7/D16Z6

92-95 Prelude 2.2L Engine Code: F22A1/H22A1

92-95 Prelude 2.3L Engine Code: H23A1

Trouble codeFault locationProbable Cause
0Engine control module (ECM)Wiring, ECM
1Heated oxygen sensor (H02S)Fuel system, wiring, H02S, ECM
3Manifold  absolute pressure  (MAP) sensorWiring, MAP sensor, ECM
4Engine speed (RPM) sensorWiring, RPM sensor, ECM
5Manifold absolute pressure  (MAP) sensorHose leak
6Engine coolant temperature  (ECT) sensorWiring, ECT sensor, ECM
7Throttle position (TP) sensorWiring, TP sensor, ECM
8Crankshaft position (CKP) sensorWiring, CKP sensor, ECM
9Camshaft  position (CMP) sensorWiring, CMP sensor, ECM
10Intake air temperature  (IAT) sensorWiring, lAT sensor, ECM
12Exhaust gas recirculation (EGR) systemHose leak/blockage, wiring, EGR valve/position sensor, EGR solenoid, ECM
13Barometric  pressure (BARO)  sensorECM
14Idle air control (lAC) valveWiring, lAC valve, ECM
15Ignition output signalWiring,  ICM, ECM
16InjectorsWiring, injectors, ECM
17Vehicle speed sensor (VSS)Wiring, VSS, ECM
19Lock-up control solenoid valve (AT)Wiring, lock-up control solenoid valve, ECM
20Electrical load sensorWiring, electrical load sensor, ECM
21VTEC system – malfunctionWiring, VTEC solenoid, ECM
22VTEC system – malfunctionWiring, VTEC pressure switch, ECM
23Knock sensor (KS)Wiring, KS, ECM
30AT signal AWiring, ECM
31AT signal BWiring, ECM
41Oxygen sensor heaterWiring, H02S, ECM
43Heated oxygen sensor (H02S)/fuel supply systemFuel system, wiring, H02S, ECM
48Heated oxygen sensor (H02S)Wiring, H02S, ECM