1.8t Fault codes.

[joebickerton89]

hi all my friend was checking his car for faults earlier so i thought i would plug it into mine and see if it had anything wrong and i got to codes come up first one was 16486 and second one was 17978 ive typed this codes into google but it brings up immobliser problems yet mines fine in that way :/ if anyone could help and tell me what they will affect etc car seems to be running fine :/ thanks

 

[Sandra]

Try asking down in the vcds section of the forum, may get an answer quicker. x

 

[16Klappe]

Joe, Joe, Joe, Joe Joe...


First result on Google when searching "16486" is the Ross-Tech wiki -

16486/P0102/000258
Contents [hide]
1 16486/P0102/000258 - Mass Air Flow Sensor (MAF/G70): Signal too Low
1.1 Possible Symptoms
1.2 Possible Causes
1.3 Possible Solutions
1.4 Special Notes
16486/P0102/000258 - Mass Air Flow Sensor (MAF/G70): Signal too Low

Possible Symptoms
Malfunction Indicator Light (MIL) ON
Loss of Power
Possible Causes
Wiring and/or Connector(s) from/to Mass Air Flow Sensor (MAF/G70) faulty
Mass Air Flow Sensor (MAF/G70) faulty
Possible Solutions
Check Wiring and/or Connector(s) from/to Mass Air Flow Sensor (MAF/G70)
Check/Replace Mass Air Flow Sensor (MAF/G70)
Special Notes
In MY 1995-2002 (?) in Europe at VW-diesel-cars G70 had the bad reputation of slowly losing his performance, causing loss of power. It's not a matter of defective or breaking down, but it is filthy / dirty (not easy to clean). You can check functionality by making a log in [01-engine], [meas.blocks-08], group 003 (3e gear, full throttle, from 1700-4000rpm)

First result on google searching for "17978" is this page from the Ross-Tech wiki -

17978/P1570/005488 - Engine Start Blocked by Immobilizer

Possible Symptoms
Engine starting but stalling immediately
Possible Causes
Key(s) not matched
Instrument Cluster not matched
Engine Control Unit (ECU) not matched
Engine Control Unit (ECU) Power Supply faulty
Possible Solutions
Check for Fault Codes in Immobilizer itself (part of Instrument Cluster in many cars, but separate Immobilizer Control Module in some)
Check Immobilizer Measuring Values (usually in Instrument Cluster OR Immobilizer Control Module)
Match Key(s)/Instrument Cluster/Engine Control Unit (ECU)
Check Engine Control Unit (ECU) Power Supply (Relay)
Special Notes
In case of Engine Starting Issues please make sure that you are really experience an Immobilizer related Problem! Even if the Immobilizer engages, the Engine will still start fine but cut out after 2-3 Seconds. If you are NOT experiencing this behavior (e.g. Engine doesn't start at all) your Problem is very likely NOT Immobilizer related.
May be stored in Combination with 01176 - Key: Signal too Low in Immobilizer Control Module.
If no other immobilizer related fault codes are stored and the immobilizer related meas. blocks are fine except Engine Start not allowed, in rare occasions it helps to try cold-booting the car. Remove both battery cables from the battery. Short the battery cables together (away from the battery) for about 15 seconds. Reconnect the battery. (Example)
Low battery voltage (including a faulty battery) may cause Immobilizer system malfunctions and testing should be done only with a known good battery installed.

How is using the internet SO hard?!

 

[<tuffty/>]

Information about how to find fault codes is in the stickies...

http://www.audi-sport.net/vb/a3-s3-...portant-when-posting-asking-help-updated.html

I occasionally get the immobiliser warning light flash up for no apparent reason... I restart the car and all is good... not yet taken the time to look into why yet...

<tuffty/>

 

[joebickerton89]

Joe, Joe, Joe, Joe Joe...


First result on Google when searching "16486" is the Ross-Tech wiki -

when i typed them in it only brought up other forum answers which didnt help



First result on google searching for "17978" is this page from the Ross-Tech wiki -



How is using the internet SO hard?!

when i typed them in it only brought up other forum answers which didnt help

 

[s3dave]

Just Clear them they could be years old.. and go from there...