Re-occuring P0101 Code

I have a 2005 Golf TDI http://forums.tdiclub.com/showthread.php?t=175964

I have replaced my MAF Sensor twice with the latest change-out (under dealer warranty) being last week.

I was driving yesterday and the code came up again. Any ideas as to what could be causing this?

The car now has 75,000 miles on it and run GREAT!!!

P0101

Check all possible causes not just MAF



Contents

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• <LI class=toclevel-1>1 16485/P0101/000257 - Mass Air Flow Sensor (G70): Implausible Signal
  • <LI class=toclevel-2>1.1 Possible Symptoms <LI class=toclevel-2>1.2 Possible Causes
  • 1.3 Possible Solutions
  • 1.4 Special Notes

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16485/P0101/000257 - Mass Air Flow Sensor (G70): Implausible Signal

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Possible Symptoms

• Loss of Power
• Erratic Idle

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Possible Causes

• Mass Air Flow Sensor (G70) faulty
• Air Leak(s) after Mass Air Flow Sensor (G70)
• Intake Air Filter dirty/faulty
• Ground Spots corroded or Paint Residue
• Wiring and/or Connections from/to Mass Air Flow Sensor (G70) faulty

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Possible Solutions

• Check Intake Air Filter
• Check Mass Air Flow Sensor (G70)
• Check Ground Spots
• Check Wiring and/or Connections from/to Mass Air Flow Sensor (G70)

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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)

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Categories: Fault Codes

Thanks for the reply. I will follow up on this!