DTC 00577/2141 - Knock Sensor Control CYL. No. 1.

NOTE: The first set of numbers is displayed as the 5 digit Rapid Data code. Second set of numbers are displayed as 4 Digit Blinking Code. Blinking codes are also displayed by vehicle's Malfunction Indicator Light (MIL).

If the scan tool indicates the above code, a range/performance problem in that circuit may exist. To perform test, see Fig 1 .

Fig 1: Knock Sensor Control Cylinder No. 1. & Knock Sensor Control Cylinder No. 2. Diagnostic Flow Charts

Courtesy of AUDI OF AMERICA, INC.