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Home >> Audi >> 1996 >> A4 Base, Standard >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Controls - Tests W/Codes - 2.8L >> Circuit Tests >> DTC P1611/18019 - Malfunction Indicator Light (Mil) Call-Up/Transmission Control Module (TCM) Short To Ground
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DTC P1611/18019 - Malfunction Indicator Light (Mil) Call-Up/Transmission Control Module (TCM) Short To Ground

NOTE: This DTC can only occur if vehicle is equipped with an automatic transmission. If malfunctions are recognized that are related to exhaust system, the automatic transmission switches on MIL.
  1. Using DVOM, check MIL circuit between PCM and TCM for a short circuit. Repair circuit as necessary. If circuit is okay, go to next step. If circuit was repaired, erase DTC memory and test drive vehicle.
  2. Replace faulty TCM. Erase DTC memory and test drive vehicle. If DTC sets again, go to next step.
  3. Replace faulty PCM. Code new PCM and test drive vehicle. See PCM CODING in this article.
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