3-Pin 1928405718 Bosch Connector – High-Pressure Common Rail & Camshaft Sensor Harness

Direct-fit replacement for Bosch OEM part number 1928405718, a 3-pin connector used for high-pressure common rail (HPCR) fuel system sensors and camshaft position sensor harness connections on European diesel and petrol engines. Bosch is the primary supplier of common rail injection systems – the 1928405718 is the standard Bosch connector housing used at fuel rail pressure sensors, camshaft sensors, and related high-voltage sensor interfaces.

Key Specifications

• OEM Part Number: 1928405718 (Bosch)
• Pin Count: 3
• Housing Material: PA66 glass-filled nylon (high-temp rated)
• Terminal Material: Copper alloy, tin-plated
• Wire Gauge: 18 AWG (0.5 mm²)
• Wire Length: 5.5 inches (140 mm)
• Operating Temperature: -40°C to +125°C
• Current Rating: Up to 10A per pin

Common Rail Sensor Pin Assignment (3-Pin Bosch)

Compatible Applications

• VW / Audi TDI: 1.9L and 2.0L TDI common rail fuel pressure sensor harness
• BMW diesel: 2.0d and 3.0d common rail pressure sensor connector
• Mercedes CDI: Common rail fuel rail pressure sensor wiring
• Bosch CRS / CRI injector systems: High-pressure sensor harness on Bosch-equipped diesel engines
• Camshaft position sensor: 3-pin Bosch CMP sensor harness on petrol engines

Fault Codes Linked to 1928405718 Connector Failure

• P0190–P0193 – Fuel Rail Pressure Sensor circuit faults
• P0340 / P0345 – Camshaft Position Sensor circuit faults
• P0087 – Fuel Rail/System Pressure Too Low (caused by pressure sensor signal loss)
• VCDS: 17965 – Fuel Pressure Regulation; 16486 – Mass Air Flow Sensor

Frequently Asked Questions

Q: Can a bad fuel rail pressure sensor connector cause a no-start on diesel?
A: Yes. The ECM requires a valid fuel rail pressure signal to control injection timing and quantity. An open circuit at the 1928405718 connector causes the ECM to disable injection or default to a fixed fuel map, resulting in hard starting, rough running, or a no-start condition.

Q: What is the Bosch 1928405XXX series?
A: The 1928405XXX series is Bosch’s standard automotive connector housing range. The last three digits identify the specific housing variant (pin count, pitch, color, seal type). The 1928405718 is a 3-pin variant in this series.

Q: What crimping tool is needed?
A: Use a ratchet crimper rated for 18 AWG (0.5 mm²) Bosch terminals – Engineer PA-09 or equivalent.

Package Contents

1 × 3-Pin Connector (1928405718) with 18 AWG wire and terminal insert