01 Cabrio issues
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Junior Member
Joined: Jun 2013
Posts: 2
From: Mt. Olive NC
01 Cabrio issues
I just bought this cabrio after it had been sitting a couple of years. The fuel pump was locked up, replaced pump and filter along with cleaning the tank out. It starts fine and will idle all day but when driving it will gradually quit taking the throttle. Will run wide open for a few seconds then cut off like its running out of fuel but if you back off the throttle it comes back and runs fine but will not take more throttle. then gradually takes less and less til it will only run at idle or just barely cracked throttle. The only codes I have gotten are 102, 506, and 1128. All pretty much point toward the MAF but I hate to buy one til I am reasonably sure that's the problem. Has anyone else had similar issues? I have checked the fuel line from the tank to the regulator and they are open. Any help or advise is greatly appreciated. This is my first late model vw, the old bugs were much more simple!!!
Super Moderator
Joined: Sep 2009
Posts: 2,648
From: Stoke on Trent, England
Welcome to the forum. 
I don't recognise those error codes 102, 506, and 1128 what did you use to scan your motor?
https://volkswagenforum.com/forum/ne...gnature-34185/
I don't recognise those error codes 102, 506, and 1128 what did you use to scan your motor?
https://volkswagenforum.com/forum/ne...gnature-34185/
Thread Starter
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Junior Member
Joined: Jun 2013
Posts: 2
From: Mt. Olive NC
I'm using a Memoscan OBD II scanner.
102-generic MAF circuit A low input
506-generic idle control system RPM low
1128- VW specific code-Long Term Fuel Trim B1 System Too Lean
From the research I've done the MAF is looking likely but would like to hear others experiences/opinions
Chuck
102-generic MAF circuit A low input
506-generic idle control system RPM low
1128- VW specific code-Long Term Fuel Trim B1 System Too Lean
From the research I've done the MAF is looking likely but would like to hear others experiences/opinions
Chuck
Super Moderator
Joined: Sep 2009
Posts: 2,648
From: Stoke on Trent, England
Thats what you get from these cheap scanners.
VAG Error Code: 16486
VAG Error Code: 17536
This stupid forum never spaces things right.
VAG Error Code: 16486
EOBD II Error Code: P0102
Fault Location:
Mass Air Flow (MAF) Sensor (G70), Bank 1 - Low Input
Mass Air Flow (MAF) Sensor (G70), Bank 1 - Low Input
Possible Cause:
Probably no serious malfunctions.
Loss of power.
Probably no serious malfunctions.
Loss of power.
Intake leak.
Air filter blocked.
Wiring short to earth.
Fuse.
Mass air flow (MAF) sensor (G70).
Mass Air Flow (MAF) (G70) defective.
Air filter blocked.
Wiring short to earth.
Fuse.
Mass air flow (MAF) sensor (G70).
Mass Air Flow (MAF) (G70) defective.
Possible Solutions:
Check wiring and connections.
Check / Replace Mass Air Flow (MAF) (G70).
Mass Air Flow (MAF) sensor signal < 66 µs
Check wiring and connections.
Check / Replace Mass Air Flow (MAF) (G70).
Mass Air Flow (MAF) sensor signal < 66 µs
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).
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).
VAG Error Code: 16890
EOBD II Error Code: P0506
EOBD II Error Code: P0506
Fault Location:
Idle Speed Control (ISC) System (G28) - RPM Lower Than Expected
Idle Speed Control (ISC) System (G28) - RPM Lower Than Expected
Possible Cause:
Throttle control unit.
Throttle control unit.
Possible Solutions:
Check throttle valve control module.
Check throttle valve control module.
VAG Error Code: 17536
EOBD II Error Code: P1128
Fault Location:
Long Term Fuel Trim, Entire Speed/Load Range, Bank 1 - System too Lean
Long Term Fuel Trim, Entire Speed/Load Range, Bank 1 - System too Lean
Possible Cause:
Malfunction Indicator Lamp (MIL)(K83) active.
Malfunction Indicator Lamp (MIL)(K83) active.
Mass Air Flow (MAF) Sensor faulty.
Oxygen Sensor Control faulty.
Oxygen Sensor(s) faulty.
Fuel pressure/pump.
Fuel Injector(s) faulty.
Intake/exhaust leak.
Secondary air injection (AIR) system.
Hose leak.
Oxygen Sensor Control faulty.
Oxygen Sensor(s) faulty.
Fuel pressure/pump.
Fuel Injector(s) faulty.
Intake/exhaust leak.
Secondary air injection (AIR) system.
Hose leak.
Possible Solutions:
Check Mass Air Flow (MAF) Sensor.
Check Oxygen Sensor Control.
Check Oxygen Sensor(s).
Check Fuel Injector(s).
Check Mass Air Flow (MAF) Sensor.
Check Oxygen Sensor Control.
Check Oxygen Sensor(s).
Check Fuel Injector(s).
This stupid forum never spaces things right.
As taken from my https://volkswagenforum.com/forum/ge...oftware-34973/
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