General Information
- Trouble codes can be displayed by LED in engine control module (ECM) – 1990 or malfunction indicator lamp (MIL) – 1991-93.
Accessing Trouble Codes
- Ensure ignition switched OFF
- Jump service check connector terminals Image 1
- 1990 – access engine control module (ECM) Image 2
- Switch ignition ON.
- Check ECM LED is flashing.
- 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
- Switch ignition OFF
Clearing Trouble Codes
- After the faults have been rectified, erase the trouble codes as follows:
- Ensure ignition switched OFF
- Remove fuse No.24 (7.5A) from underhood fusebox for 10 seconds minimum
- Reinstall fuse
- Repeat accessing procedure to ensure no data remains in ECM fault memory
Trouble Codes
90-93 Accord 2.2L Engine Code: F22A1/4/6 | ||
|---|---|---|
| Trouble code | Fault location | Probable Cause |
| 0 | Engine control module (ECM) | Wiring, ECM |
| 1 | Heated oxygen sensor (H02S) | Fuel system, wiring, H02S, ECM |
| 3 | Manifold absolute pressure (MAP)sensor | Wiring, MAP sensor, ECM |
| 4 | Engine speed (RPM) sensor | Wiring, RPM sensor, ECM |
| 5 | Manifold absolute pressure (MAP)sensor | Hose leak |
| 6 | Engine coolant temperature (ECT)sensor | Wiring, ECT sensor, ECM |
| 7 | Throttle position (TP) sensor | Wiring, TP sensor, ECM |
| 8 | Crankshaft position (CKP) sensor | Wiring, CKP sensor, ECM |
| 9 | Camshaft position (CMP) sensor | Wiring, CMP sensor, ECM |
| 10 | Intake air temperature (IAT) sensor | Wiring, lAT sensor, ECM |
| 13 | Barometric pressure (BARO) sensor | ECM |
| 14 | Idle air control (lAC) valve | Wiring, lAC valve, ECM |
| 15 | Ignition output signal | Wiring, ignition module, ECM |
| 16 | Injectors | Wiring, injectors, ECM |
| 17 | Vehicle speed sensor (VSS) | Wiring, VSS, ECM |
| 20 | Electrical load sensor | Wiring, electrical load sensor, ECM |
| 30 | AT signal A | Wiring, ECM |
| 31 | AT signal B | Wiring, ECM |
| 41 | Oxygen sensor heater | Wiring, H02S, ECM |
| 43 | Heated oxygen sensor (H02S)/fuel supply system | Fuel system, wiring, H02S, ECM |