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Home >> Buick >> 2007 >> Lucerne CX >> Repair and Diagnosis >> External Pages >> Different car >> Section 223 (Seat System) >> Diagnostic Information and Procedures >> DTC B1920 or B2165: Seat Heater Timer Circuit >> Conditions for Setting the DTC

Conditions for Setting the DTC

WARNING: This page is about a different car, the 2006 Pontiac Montana SV6, 2006 Chevrolet Uplander, and 2006 Buick Terraza. However, it is still accessible from the selected car via links, so may be relevant.
  1. The BCM detects that the change in voltage of the temperature sensor signal circuit is either too fast or too slow.
  2. The BCM performs the slow rate check only when the heated seat is initially turned on in order to prevent setting a false DTC.
  3. The slow rate check may take the BCM 10 minutes to set a DTC.
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