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Home >> Volkswagen >> 2001 >> Jetta GL, 2.0 S, Standard >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 36 (1.8L - Fuel Injection Ignition, Engine Code(S): AWW, AWP (A4 Platform)) >> 01 On Board Diagnostic (OBD) >> Measuring Value Block >> Measuring value blocks, evaluating display groups 10 to 29 (Ignition) >> Evaluating display groups 22/23, display zones 3 and 4 - Retardation of ignition

Evaluating display groups 22/23, display zones 3 and 4 - Retardation of ignition

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Appears on display Possible cause Corrective action
All cylinders 12.75 ° CA
  • Knock sensor faulty
 
  • Connector corroded
  
 
  • Knock sensor incorrectly tightened
  • Loosen knock sensor and tighten to 20 Nm
 
  • Ancillary components on engine loose
  • Tighten ancillary components
 
  • Poor fuel quality
  • Change type of fuel
One cylinder deviates greatly from the others
  • Connector corroded
 
  • Engine damaged
 
  • Ancillary components on engine loose
  • Tighten ancillary components
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