Hi all,
I found this topic same issue of gearbox fault then I think it can help. Below is a quote from topic owner but you can read all threads from this link
Last, hopefully, update.
60 mile trip today at highish speed, therefore engine and turbo well up to temp, and NO repercussions. So, I now feel comfy that the issue is resolved.
Summary of thread:
Started with the appearance of a message on the dashboard display "Gearbox Fault" accompanied by flashing glowplug icon and amber light. Outcome: engine in limp mode and auto gearbox not shifting.
Diagnosis at local indie: P132A Turbo/Supercharger Boost control A electrical and another, I can't remember what, though. Likely source Turbo Actuator. My comment: How come "Gearbox Fault"? Well, consensus opinion, the display is registering the symptom, not the source.
Advised that best route would be to replace the complete turbo assembly. Cost £1400 approx. Don't like that route
Find Taylor Motor Services on eBay. They seem to be familiar with the symptoms/diagnosis and offer a recon service for own turbo actuatorunit at £89.95. I opt for this. Postage to them £7.15 recorded dely.
Two days later, recon unit received back. (Fastest ever service I can recall.)
Recon'd Actuator refitted by indie. Car starts and runs normally. No messages etc.
Problem solved.
Therefore, by going down the recon actuator route I saved £1222.90
(£1400.00 - £177.10 (£89.95 + £7.15 + local indie investigation and diagnosis cost £80) = £1222.90)
OK, you could argue that I don't have a new turbo. But the current turbo is patently operating just fine and at only 50K miles I don't think I need bother too much on that front.
So, in footie parlance - A RESULT