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[Audi A3/S3] A3 short to ground + low voltage on MAF, o2 sleeping


j3nn3r
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Have had this show up on the VAG-COM its on a A3 1.8 T AGU engine

01247 - Activated Charcoal Filter (EVAP) System Solenoid Valve 1 (N80)

29-00 - Short to Ground

16486 - Mass or Volume Air Flow Circuit - Low input

P0102 - 35-00 -

16518 - O2 Sensor Circuit - No Activity Detected (Bank 1 Sensor 1)

16519 - Oxygen (Lambda) Sensor B1 S1: Heating Circuit Malfunction Sensor Heater Circuit - Malfunction (Bank 1 Sensor 1)

P0135 - 35-00 - -

Been thinking and it had occured to me that the short to ground and MAF may have a common input somewhere. will also check fuses again.

I am in the middle of getting a quote for the O2 sensor replacement, but just seems odd to me that these particular errors would show up together.

Idle slighty raised also.

Does anyonw know if the J17 Relay or any others may be related to these problems. And where is it.

Edited by j3nn3r
forgot to add
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  • 2 weeks later...
  • 1 month later...
  • 2 weeks later...

Hi,

Last week I've got the same errors from vag-com. Which fuses have you replaced? Only MAF?

You mentioned you changed O2 sensor. I don't sense any power reduction or fuel consumption increasing due to O2 sensor fail.. Did you sense the same?

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im getting the same

1250- ------- Injector for No. 2 Cyl. (N31)

Short to Ground INTERMITTENT

1251- ------- Injector for No. 3 Cyl. (N32)

Short to Ground INTERMITTENT

1252- ------- Injector for No. 4 Cyl. (N33)

Short to Ground INTERMITTENT

1247- ------- EVAP canister purge regulator valve (N80)

Short to Ground INTERMITTENT

1262- ------- Wastegate Bypass Reg. Valve -N75

Short to Ground INTERMITTENT

16486 (P0102) Mass or Volume air Flow Circuit Low Input

INTERMITTENT

16519 (P0135) O2 Sensor Heater Circuit Malfunction (Bank 1 - Sensor 1)

INTERMITTENT

before this it was running fine and no errors makes me think it is an earthing problem leave it a few mins and it starts then dies after a few more mins any one got any answers

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