Renault / Peugeot / Citroen 2-Pin 2.8mm Reverse Sensor Waterproof Connector – OEM 7021Q-2.8-21
Direct OEM-specification replacement for the 2-pin waterproof wire harness connector used on reverse parking sensors (PDC sensors) across Renault, Peugeot, Citroen, and Logan platforms. Cross-references OEM part number 7021Q-2.8-21. Uses the 2.8mm contact series in black and green nylon housing with waterproof sealing — designed for rear bumper-mounted parking sensor applications where moisture, road spray, and temperature cycling are constant.
The 2-pin reverse sensor connector is located in the rear bumper, one of the most exposed positions on the vehicle. Road spray, car wash water, and temperature cycling cause the connector seal to harden and crack, allowing moisture to corrode the 2.8mm terminals. A failed reverse sensor connector causes the parking sensor system to display a fault — typically a continuous beep or a sensor error on the dashboard display — and disables the affected sensor. On vehicles with four rear sensors, a single failed connector can disable the entire PDC system.
| OEM Number | Application |
|---|---|
| 7021Q-2.8-21 | Renault/PSA 2-pin 2.8mm reverse sensor connector |
| Pin | Function | Failure Symptom if Open |
|---|---|---|
| 1 | Sensor signal / power supply | PDC sensor fault, continuous beep |
| 2 | Ground | Sensor inoperative, PDC system fault |
| Attribute | Detail |
|---|---|
| Pin Count | 2-Pin |
| Contact Series | 2.8mm pitch |
| Housing Material | Nylon, black and green |
| Sealing | Waterproof |
| OEM Part Number | 7021Q-2.8-21 |
| Applications | Reverse parking sensor (PDC), ultrasonic sensor harness |
| Compatible Models | Renault Logan / Duster / Megane; Peugeot 206 / 307 / 308; Citroen C3 / C4 / C5 |
| Terminal Included | Yes |
Q: My Renault Logan parking sensor is beeping continuously in reverse — could it be the connector?
A: Yes. A corroded or open 2-pin reverse sensor connector is a common cause of PDC faults on Renault and PSA Group vehicles. Disconnect each sensor connector in turn and inspect the terminals for corrosion before replacing the sensor itself.
Q: Are terminals included?
A: Yes, terminals are included with all variants.
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2 Pin Connectors
