BMW N45 ECU Repair – No Injector Pulse Issue

Service Overview:

We offer a specialist repair service for the BMW N45 ECU that’s experiencing no injector pulse. This is a common failure on these ECUs and can prevent the engine from starting, despite crank signal and fuel pressure being present.

If you’ve confirmed power, ground, crank signal, and injector wiring is intact – but you're still getting no injector output – the ECU is likely at fault.

Common Symptoms:

• Engine cranks but won’t start

• No injector pulse

• Confirmed crank signal on scope, but ECU not triggering injectors

• Fuel pump operates, but no fuel is delivered due to no injection event

• Check engine light may or may not be illuminated

What Our Repair Includes:

✅ Full diagnostic and bench testing of the ECU
✅ Replacement or rework of failed components
✅ Testing of injector drivers and output stages
✅ Reflow or replacement of internal processor-related circuitry if needed
✅ 48-hour turnaround on diagnostics
✅ 12-month warranty on the repair

Important Notes:

• This is a repair service – your existing ECU is repaired and returned

• All units are fully tested before return

• In some cases, we may recommend cloning your ECU data onto a replacement unit if internal damage is beyond repair

Trade-Focused Service

We work predominantly with mechanics, workshops, and auto electricians, providing fast and reliable ECU repairs so you can get your customer’s vehicle back on the road quickly.

 Turnaround:

⏱ Diagnostics within 48 hours of receiving your unit
📍 Workshop: Christchurch, New Zealand – Nationwide shipping available

Need Help?

Got questions before sending in your ECU?
Call us on 0800 000 488 or email [email protected] – we're happy to help.