P0C OBD1 ECU Reference
Technical specifications and pinout reference for the P0C OBD1 ECU used in 1992-1995 Honda Accord 2.2L models.
The P0C ECU is an OBD1 engine control unit utilized in 1992â1995 Honda Accord models equipped with the 2.2L F22B DOHC non-VTEC engine.
Technical Specifications
- OBD Version: OBD1
- Engine Application: F22B (DOHC Non-VTEC)
- Vehicle Application: 1992â1995 Honda Accord
Note
This ECU is specific to the non-VTEC DOHC F22B engine configuration. Ensure compatibility with your specific engine harness before installation.
ECU Pinout
The following table outlines the primary pinout configuration for the P0C ECU.
PG1
- Ground
PG2
- Ground
INJ1
- Injector 1
INJ2
- Injector 2
INJ3
- Injector 3
INJ4
- Injector 4
No matching connections.
Diagnostics
Use the following tool to cross-reference error codes associated with this ECU.
Related Resources
Resistor Color Code Reference
Use the color bands on through-hole resistors to identify their resistance value before installing ECU jumpers, pull-ups, voltage dividers, or sensor-scaling parts.
How to Read the Bands
| Resistor Type | Band 1 | Band 2 | Band 3 | Band 4 | Band 5 |
|---|---|---|---|---|---|
| 4-band | 1st digit | 2nd digit | Multiplier | Tolerance | - |
| 5-band | 1st digit | 2nd digit | 3rd digit | Multiplier | Tolerance |
Color Values
| Color | Digit | Multiplier | Tolerance |
|---|---|---|---|
| Black | 0 | x1 | - |
| Brown | 1 | x10 | +/- 1% |
| Red | 2 | x100 | +/- 2% |
| Orange | 3 | x1,000 | - |
| Yellow | 4 | x10,000 | - |
| Green | 5 | x100,000 | +/- 0.5% |
| Blue | 6 | x1,000,000 | +/- 0.25% |
| Violet | 7 | x10,000,000 | +/- 0.1% |
| Gray | 8 | x100,000,000 | +/- 0.05% |
| White | 9 | x1,000,000,000 | - |
| Gold | - | x0.1 | +/- 5% |
| Silver | - | x0.01 | +/- 10% |
| No band | - | - | +/- 20% |
Common ECU Examples
| Value | 4-Band Code | Typical Use |
|---|---|---|
| 220 ohm | Red, Red, Brown, Gold | LED/current-limiting or ECU hardware mods |
| 1k ohm | Brown, Black, Red, Gold | Pull-up, jumper, and driver-bias circuits |
| 1.2k ohm | Brown, Red, Red, Gold | Driver-bias circuits such as IACV repair references |
| 4.7k ohm | Yellow, Violet, Red, Gold | Transistor base resistor circuits |
| 10k ohm | Brown, Black, Orange, Gold | Pull-up, pull-down, and sensor-divider circuits |
Tip
Always confirm the measured value with a multimeter before soldering. Old ECU resistors can be heat-discolored, and some boards use small surface-mount parts marked with numeric codes instead of color bands.