Mercedes Sprinter / Dodge ECU Repair – No 5V Sensor Reference

Mercedes Sprinter / Dodge ECU Repair – No 5V Sensor Reference

ECU Part No: A 646 150 63 72 | 2006–2018 Models

This is a repair service for the engine control unit (ECU) used in 2006–2018 Mercedes-Benz Sprinter and Dodge-branded variants, specifically for units with no 5-volt reference signal to key sensors such as the crankshaft position sensor or accelerator pedal position sensor.

Common Symptoms Repaired:

• Crank sensor or accelerator pedal not reading

• Engine cranks but does not start

• Diagnostic trouble codes for sensor voltage out of range or missing signal

• No 5V reference detected on ECU pinout

• Check Engine Light illuminated with multiple sensor-related faults

What We Do:

• Diagnose and repair the 5V reference circuit within the ECU

• Replace failed voltage regulators, transistors, or track-level components

• Test and verify all sensor reference lines on a bench rig

• Confirm correct 5V output to crank and accelerator sensors

Applies To:

• Mercedes-Benz Sprinter (2006–2018)

• Dodge Sprinter (equivalent U.S. market models)

• ECU Part Number: A 646 150 63 72 646 150 63 72

• Other Bosch ECU numbers may also apply (please enquire)

Turnaround Time: 2–4 business days
Warranty: 12 months on repaired 5V output circuit

💡 Avoid the high cost and downtime of a replacement ECU — we restore your original unit with tested, reliable repairs.