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Home >> Toyota >> 2020 >> Corolla L >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 4 (Charging System (M20A-FKS) - Diagnostic Codes & Symptom Tests) >> Charging System >> DTC P161A-87: Lost Communication with Alternator Missing Message [06/2018 - 03/2019] >> Description

DTC P161A-87: Lost Communication with Alternator Missing Message [06/2018 - 03/2019]: Description

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The ECM communicates with the generator assembly via LIN communication. If a LIN communication error is detected, the ECM stores this DTC.

DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate Memory Note
P161A-87 Lost Communication with Alternator Missing Message Generator assembly or ECM communication stops for approximately 17 minutes or more with the engine switch on (IG).
(1 trip detection logic)
  • Wire harness and connector
  • Generator assembly
  • ECM
Charge warning is not displayed DTC stored SAE Code: P161A