Throttle position sensor wires needed changing

[Zano]

I had a strange issue where my car, which had done only about 16,000km, and was about a month (!! ) out of warranty would throw a fault code and the car would go into a limp mode:

• Check engine light
• Air cond stops cooling the air
• Cruise control fails to work
• Car is very sluggish

The fault would go away 1-4 days later. Sometimes later in the same day. This happened about 6 times over nearly 3 months. I booked it into the dealer twice to have checked, but then cancelled the booking after the car mysteriously cured itself. I was ever hopeful that the issue was a once off, even after it occurred 3 times! Problem was that the dealer had me booked in about 10 days away. I wanted someone to see the car when the code was 'live' and take it for a test drive.
I spoke to a Subaru mechanic who had time to do a quick read of the codes when it occurred again, and he got:

• Code 08487 Accelerator Position Sensor 2 - 6185: Signal too low P2127

I also got another generic mechanic to do a read to verify and he came up with some TPS error code, and suggested that I replace the Throttle Position Sensor.

At least everything pointed to a common thing, but these guys weren't VW specialists. So I called another VW dealer for an opinion and he thought it was ludicrous to think a car with just 16,000km would need the TPS changed - I tended to agree.

In the end I wanted a VW mechanic to fix it, and they changed:
6 X wires 000989025EA
15 X connectors 000979940
Removed accelerator pedal and proceeded to remove all wires. Replaced wire that was faulty and refit and insulate all other. Clear codes and road test. OK.
I won't shock you with the cost !!

The service manager said "it was a known fault". Has anyone had such weird Throttle Position Sensor issues in a low km (sub 20,000km) golf? What could cause such a thing? Surely wires just don't wear out!!?