Passat L4-1.8L Turbo (AWM) (2004)
The following operating conditions must be obtained during road test:
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Coolant temperature must rise to above 80 °C.
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Once the temperature is reached, the operating conditions
Idle
Partial throttle
Wide Open Throttle (WOT)
Deceleration
must be reached several times each.
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Engine speed must be increased to above 3500 RPM during Wide Open Throttle (WOT).
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Check control module's DTC memory again.
If complaint persists:
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Replace Knock Sensor(s)