C116006 - C116006 Left Right Motor Status Mode Fault

meaning the mechanical execution part of the electronic parking brake cannot respond to control commands.

• The Parking Brake Indicator light on the instrument cluster lights up or flashes, indicating a fault condition in the braking system.
• While the vehicle is stopped, automatic holding of parking force may be impossible, increasing the risk of rolling away on slopes.
• When attempting to manually release or apply the parking brake, the motor operation may feel weak or exhibit increased binding/stiction.

Core Fault Cause Analysis

Based on system diagnostic logic, the potential root causes for this fault code can be precisely divided into three technical dimensions:

• Hardware Components (Actuator Side): Corresponds primarily to Left Rear Caliper Motor Failure and Right Rear Caliper Motor Failure recorded in the original data. Such hardware failure usually manifests as damaged internal drive circuits, loss of Hall sensor signals, or mechanical binding in the rotor structure, directly preventing the establishment of effective status feedback.
• Wiring/Connectors (Physical Connection): Although wiring issues are not explicitly listed in the original data, physical connection anomalies such as power line open circuits, poor grounding, or motor plug contact oxidation during the determination process of Left and Right Caliper Motor Function Failure can simulate a "status mode fault," so relevant wiring integrity must be inspected.
• Controller (Logic Operation Side): Corresponds to the data entry for Electronic Parking Controller Failure. This refers to software hang, lost memory calibration data, or inability of the processor to correctly parse motor current feedback signals within the control module, leading to erroneous judgment that the motor is in an invalid status mode.

Technical Monitoring and Trigger Logic

The system's diagnostic program activates generation and storage of this fault code only under specific environmental conditions:

• Trigger Conditions: Ignition Switch placed in ON position. Only when ignition power is on and the electronic parking controller enters the active self-check cycle will the system perform real-time verification of motor status.
• Monitoring Targets: The control unit monitors Status Feedback Signals (Status Feedback) and Instruction Response Speed coming from Left and Right Caliper Motors in real time. The system judges motor health by comparing action instruction pulses issued by the controller with actual returned voltage/current induction values.
• Judgment Logic: Under trigger conditions, if the motor fails to return compliant expected position information within a specified time window, or if received status signals exceed normal threshold ranges, the system will immediately record C116006 and stop normal motor drive functions. This monitoring process aims to ensure absolute safety of the parking system during vehicle stationary and driving switching processes.

Cause Analysis Based on system diagnostic logic, the potential root causes for this fault code can be precisely divided into three technical dimensions:

• Hardware Components (Actuator Side): Corresponds primarily to Left Rear Caliper Motor Failure and Right Rear Caliper Motor Failure recorded in the original data. Such hardware failure usually manifests as damaged internal drive circuits, loss of Hall sensor signals, or mechanical binding in the rotor structure, directly preventing the establishment of effective status feedback.
• Wiring/Connectors (Physical Connection): Although wiring issues are not explicitly listed in the original data, physical connection anomalies such as power line open circuits, poor grounding, or motor plug contact oxidation during the determination process of Left and Right Caliper Motor Function Failure can simulate a "status mode fault," so relevant wiring integrity must be inspected.
• Controller (Logic Operation Side): Corresponds to the data entry for Electronic Parking Controller Failure. This refers to software hang, lost memory calibration data, or inability of the processor to correctly parse motor current feedback signals within the control module, leading to erroneous judgment that the motor is in an invalid status mode.

Technical Monitoring and Trigger Logic

The system's diagnostic program activates generation and storage of this fault code only under specific environmental conditions:

• Trigger Conditions: Ignition Switch placed in ON position. Only when ignition power is on and the electronic parking controller enters the active self-check cycle will the system perform real-time verification of motor status.
• Monitoring Targets: The control unit monitors Status Feedback Signals (Status Feedback) and Instruction Response Speed coming from Left and Right Caliper Motors in real time. The system judges motor health by comparing action instruction pulses issued by the controller with actual returned voltage/current induction values.
• Judgment Logic: Under trigger conditions, if the motor fails to return compliant expected position information within a specified time window, or if received status signals exceed normal threshold ranges, the system will immediately record C116006 and stop normal motor drive functions. This monitoring process aims to ensure absolute safety of the parking system during vehicle stationary and driving switching processes.