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D3 - Common Faults Quick links to all known common faults and their solutions

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Old 7th July 2019, 01:13 PM
Jon_viola Jon_viola is offline
Join Date: Jan 2017
Location: Sussex
Posts: 67
Default Engine light on


Havenít been on for a while- havenít needed to! My 57 plate 4.2 diesel has been amazing for the past 40k miles (now showing 215k).

However the engine light keeps coming on.

Vcds shows

Fault codes
Throttle body module 2
Electrical malfunction

Battery regulation
Upper limit exceeded intermittent

Are they related? Do I need to sort the voltage regulator or the throttle body?

On vcds charge shows 14.8v, battery 14.5v, condition 100%

Can you offer any advice? Car drives fine as always.


2007 4.2tdi Quattro Sport.

Valcona black leather, Extended leather, Sports comfort Seats, Fr&R Heated seats, 20" wheels, BOSE, Media Interface, TVIM, DAB, CD changer, Bluetooth, Reversing Camera, Auto dim mirrors, Blinds, Soft close doors, Elec Boot, Keyless entry, Finger print read, TPMS, BI Xenon Active lights, LED indicators, LED puddlelights from door mirror when door closed.
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