Nissan / Toyota / Honda / Mitsubishi 4-Pin 1.2mm MAF / MAP Sensor Waterproof Connector – OEM 6189-0551 / MD355556
Direct OEM-specification replacement for the Sumitomo 4-pin waterproof wire harness connector used on mass air flow (MAF) sensors and intake manifold pressure (MAP) sensors across Nissan, Toyota, Honda, and Mitsubishi platforms. Cross-references Sumitomo OEM part numbers 6189-0551 and MD355556. Uses the 1.2mm contact series in grey nylon housing with waterproof sealing — a compact, high-density connector used for critical engine management sensor circuits.
A failed MAF or MAP sensor connector causes the ECM to lose air mass or manifold pressure data, triggering P0100–P0105 fault codes. Without this data, the ECM cannot accurately calculate fuel injection quantity, causing rich or lean running, increased fuel consumption, and potential catalytic converter damage.
| OEM Number | Application |
|---|---|
| 6189-0551 | Sumitomo 4-pin 1.2mm MAF/MAP sensor connector (primary) |
| MD355556 | Mitsubishi OEM cross-reference |
| Pin | Function | Failure Symptom if Open |
|---|---|---|
| 1 | 12V power supply | Sensor inoperative, P0100–P0105 |
| 2 | Ground / earth | Sensor inoperative |
| 3 | MAF / MAP signal output to ECM | ECM loses air data, rich/lean running |
| 4 | IAT signal (combined sensor variants) | P0110–P0113 IAT fault |
| Attribute | Detail |
|---|---|
| Pin Count | 4-Pin |
| Contact Series | 1.2mm pitch (Sumitomo series) |
| Housing Material | Nylon, grey |
| Sealing | Waterproof |
| OEM Part Numbers | 6189-0551 / MD355556 |
| Applications | MAF sensor, MAP sensor, combined MAF/IAT sensor |
| Compatible Models | Nissan Navara / X-Trail / Qashqai; Toyota Corolla / Camry / RAV4; Honda Civic / Accord / CR-V; Mitsubishi Lancer / Outlander / Pajero |
| Terminal Included | Yes |
Q: Are terminals included?
A: Yes, terminals are included with all variants.
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4 Pin Connectors
