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Home >> Lexus >> 2010 >> ES 350 >> Repair and Diagnosis >> Engine Performance >> System >> Active Control Engine Mount System (Diagnostic Codes & Circuit Tests) >> Active Control Engine Mount System >> DTC P16A1: Linear Solenoid Circuit or G Sensor Circuit >> Description
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DTC P16A1: Linear Solenoid Circuit or G Sensor Circuit: Description

The ECU receives information from the G sensor, ECM (engine speed, engine load ratio coolant temperature, and shift position) skid control ECU (vehicle speed), and A/C ECU (ambient temperature). Based on this information, the ECU drives the solenoid actuator that is built in the front mount to generate vibration that is opposite to the engine vibration in order to reduce engine vibration.

DTC No. DTC Detection Condition Trouble Area
P16A1 While the active control engine mount ECU is controlling the actuators, problems (open circuit, short circuit, overcurrent, etc.) occur in the ECU, actuators, or the circuits.
  • Acceleration sensor
  • Front engine mounting insulator
  • Open or short in active control engine mount actuator circuit
  • Active control engine mount ECU
The vibration signal level from the acceleration sensor is lower than specified (problems with the sensor or the actuator may be stuck).