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

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Our assessment fee is $150 + GST.
If you choose to proceed with the repair, this fee is applied towards the total repair cost. It is only charged separately if you decide not to proceed after the assessment.

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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.