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P54 ECU Technical Reference

Technical reference for the P54 OBD1 ECU, commonly found in JDM Domani and 1.8L Accord models equipped with the B18B DOHC engine.

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Anonymous PGMFI contributor Author

The P54 is an OBD1 engine control unit (ECU) utilized in JDM Domani and 1.8L Accord platforms, specifically paired with the 1.8L B18B DOHC engine.

ECU Board Scans

The following images provide visual documentation of the P54 PCB layout.

P54 ECU Board Scan 1992
P54 ECU board revision 1992
P54 ECU Board Scan 1993
P54 ECU board revision 1993
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Note

This ECU follows standard Honda OBD1 architecture. Ensure proper identification of board revisions when performing hardware modifications or chip tuning.

Applies to

3 taxonomy links
Cars 3 links

Acura

1 link
Model Integra
Direct taxonomy match

Honda

2 links
Model Accord
Direct taxonomy match
Model Integra
Direct taxonomy match