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Home >> GMC >> 2017 >> Acadia SL >> Repair and Diagnosis >> External Pages >> Different car >> Section 197 (Automatic Transmission - 8L45 (M5N M5T) Or 8L90 (M5U) - Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> DTC P182A, P1838, P18B5, P18BA, or P18BF: Internal Mode Switch A >> Conditions for Setting the DTC

Conditions for Setting the DTC

WARNING: This page is about a different car, the 2017 Cadillac ATS. However, it is still accessible from the selected car via links, so may be relevant.

P182A 

TCM has detected the internal mode switch A signal circuit voltage is less than 0.7 V, for 1.75 s.

P1838 

TCM has detected the internal mode switch A signal circuit voltage is greater than 2.38 V, for 1.75 s.

P18B5 

TCM has detected the internal mode switch A signal circuit voltage is between 0.966-1.68 V, for 1.75 s.

P18BA 

TCM has detected the internal mode switch A signal circuit has an invalid voltage range of 1.68 - 2.38 V, for 2.7 s.

P18BF 

TCM has detected the internal mode switch A signal circuit has an invalid voltage range of 0.70 - 0.96 V, for 2.7 s.

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