P5P OBD2 ECU Technical Reference
Technical overview of the P5P OBD2 ECU used in the JDM Honda Prelude Type-S, detailing its hardware specifications and application.
The P5P is an OBD2-compliant Engine Control Unit (ECU) utilized in the Japanese Domestic Market (JDM) 1997â2000 Honda Prelude Type-S.
Overview
The P5P ECU is specifically calibrated for the H22A engine found in the Type-S trim. It features unique fuel and ignition mapping designed to support the higher compression ratio and specific intake/exhaust characteristics of the Type-S powerplant.
Important
The P5P is an OBD2-spec ECU. Ensure compatibility with your vehicle's wiring harness and immobilizer system before installation, as JDM units may lack the immobilizer circuitry found in North American (USDM) counterparts.
Hardware Specifications
- Market: JDM (Japanese Domestic Market)
- Vehicle Application: 1997â2000 Honda Prelude Type-S
- Engine: H22A
- OBD Standard: OBD2
Diagnostic Support
For troubleshooting and diagnostic assistance, refer to the integrated error code database:
Compatibility Notes
- Immobilizer: As a JDM-spec ECU, the P5P may not include the immobilizer hardware required for USDM vehicles. Use of this ECU in a USDM chassis may require an immobilizer bypass or specific wiring modifications.
- Sensor Scaling: The P5P utilizes standard Honda OBD2 sensor scaling. If you are integrating wideband oxygen sensors or aftermarket monitoring equipment, refer to the following wiring reference: