Diagnostic Trouble Code (DTC) memory, erasing

• Malfunction repaired

• Test-drive car for a road test of at least 10 minutes duration. While test-driving:
  • Engine Coolant Temperature (ECT) must reach at least 80°C (176°F)
  • Engine Speed (RPM) must reach at least 4600 RPM
  • The Accelerator Pedal must be fully depressed, briefly reaching the Wide Open Throttle position at least once
  • In 4th gear, starting from approx. 50 km/h (30 mph), accelerate for approximately 4 seconds using half-throttle (Accelerator Pedal pressed halfway down)
• Connect VAG 1551 Scan Tool (ST) with VAG 1551/3 adapter harness.
• Start engine and let idle.

Operate VAG 1551 Scan Tool (ST) according to information and instructions on the display:

• Press button -1- for "Rapid data transfer" operating mode.
• Enter address word 01 for "Engine Electronics."

  Indicated on display

  Fig 1: Identifying VAG 1551 Scan Tool - Rapid Data Transfer Help Display

  
• Press buttons -0- and -2- to select "Check DTC Memory" function.
• Press -Q- button to confirm input.

  Indicated on display

  Fig 2: Identifying VAG 1551 Scan Tool - Rapid Data Transfer Help Display

  
• Press --> button until all DTCs still stored have appeared, and the Scan Tool display reads as shown.
• Press buttons -0- and -5- to select "Erase DTC Memory" function.
• Press -Q- button to confirm input.

  Indicated on display

  Fig 3: Identifying VAG 1551 Scan Tool - DTC Memory Erased

  
• Press --> button.

  Indicated on display

  Fig 4: Identifying VAG 1551 Scan Tool - Rapid Data Transfer Help Display

  
• Press buttons -0- and -6- to select "End Output" function.
• Press -Q- button to confirm input.
• Repeat the road test, at least 10 minutes duration:
  • Engine Coolant Temp. at least 80°C (176°F)
  • Engine Speed (RPM) to at least 4600 RPM
  • Wide Open Throttle at least once
  • Accelerate at half-throttle in 4th gear, for at least 4 seconds
• Check DTC memory again.
  • No DTC recognized