Isuzu Bighorn ECU Repair – Full Throttle Fault (UBS69GW, 8971354430 / 409713-1104)

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Price Exclusive of GST

Our minimum assessment fee is $150 + GST (Excluding Headlights). This just covers the time to check the unit over. If you proceed with the repair, we’ll apply this to the total cost. Our full terms of trade can be found here. Has repair work been attempted by your customer? Link here !

Heavy Diesel or Industrial Repair you need? Link here for a solution!

Australian customers, we can pick up from your Workshop. Click Here to arrange a pickup

International Customers:
When sending a unit from overseas, please declare it as “Repair and Return” with a low customs value (around $100 USD) to avoid unnecessary import fees. - All Repair Prices are quoted in NZD

 

This is a repair service for the engine control unit (ECU) found in the Isuzu Bighorn UBS69GW, specifically for part numbers 8971354430 and 409713-1104.

These ECUs are prone to several faults, but one of the most critical and commonly reported issues is the engine running at full throttle unexpectedly — a dangerous and serious failure caused by internal circuit faults.

Common Symptoms Include:

  • Engine surging or running at full throttle with no pedal input

  • Unstable idle or erratic RPM

  • Engine light on with throttle position-related fault codes

  • No response to accelerator input

Our Repair Service Covers:

  • Thorough inspection of internal power and throttle control circuits

  • Replacement of damaged or degraded components

  • Cleaning and rework of all suspect areas

  • Full bench testing for correct throttle control and stability

Turnaround Time: 2–4 business days
Applies To: Isuzu Bighorn UBS69GW with ECU part numbers 8971354430 / 409713-1104

⚠️ If your engine is revving uncontrollably, stop using the vehicle immediately and send in the ECU for repair.