Should I also clear DTC does and...

[headache56]

Does anyone speak Fault-codish please ?
I recently bought a Fault Code Reader, a Autel Vagsanner, to try and identify any possible reason for the severve but intermittent hesitantcy / jerkiness upon hard acceleration. I replaced the MAF and the Lambda sensor last week. Apologies if I am in the wrong forum - please advise.

The Engine fault codes are:

17833
Tank Ventilation Valve, Short to Ground or EVAP Purge Valve (N80): Short to Ground: P1425

17523
Oxygen (Lambda) Sensor Heating Cuircuit: B1 S1: Short to Ground: P1115

16486
Mass or Volume Air Flow Circuit - Low Input or Mass Air Flow Sensor (G70): Signal too Low: P0102

17697 Boost Pressure Control Valve (N249): Short To Ground: P1289

17955 Boost Pressure Regulation Valve (N75): Short to Ground: P1547

May I ask:

(1)
Should I Erase the codes then run the Fault Code Reader again (so that only those problems not already rectified will show up?)

(2)
Does the frequency with which the words "Short to Ground" appear indicate any common problem ?

(3)
Any suggestions on how I should proceed ? Any steer would be much appreciated.

Thank you
Kevin

[headache56]

Help will anyone talk to me ? Am I in the wrong place ?

[a8 tech]

Iam waiting for the other bloke to respond.

[onzarob]

I would clear the codes and see what re-appears. thats allot of short to grounds, either its a wiring fault or a sequence triggered by one event.

[headache56]

Onzarob (or anyone),

Thank you. I cleared all codes, they disaperaed then after a short drive, all 5 came back again. I cleared them again and they came back again.

Interestingly, I have what I thought was an unrelated problem - when driving with the radio on in a weak signal recetion area, the radio seemed to stop/stutter for perhaps half a sceond every 10-20 minutes or so.

I guss this means a trip to a specialist Auto Electrician (I am not impressed with my local VW deaer who msised these faults) but I woud like to keep trying a bit more. Do you reckon there is any single problem that might cause these shorts (e.g. water in a footwell, common wiring loom problem).

Thank you
Kevin Headache (well it's giving me one - that is why I chose this handle!)