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.