Need help bad... code b2477 and b1881

[trannyfreak]

Hi all, i had a mates friend come and have a go at removing tachograph from my mk7 2008 transit minibus, he said he might be able to get mileage showing on the dash as the tachograph is completely dead, he couldn't do it and now my air bag light is on and I got some codes popping up, whats tge idiot done wrong and its due to go for mot soon, many thanks

[tranmx2]

Find where the module is located.
Look for loose - not fully home connectors - loose wire in connector - loose connector pins - esp female connector pins - disconnected wires - damaged wires.

A code could show because a connector has been disconnected.
A related connector may have been disconnected and a code is now showing.
Reset/delete the codes - scan again - see if the codes come back.

The sensors are linked to modules - some modules are linked.

On the 2011/2014 Mk 7s the RCM is linked to other circuits/modules.
Changes to the Mk 7s occured in 2011. The Mk 7s were made from 2006 to 2014. The 2006 to 2011 may/might not be the same as the 2011 to 2014 Mk 7s.

[trannyfreak]

That's brilliant I'll give it a go many thanks