Code C1512 on the 2023 Honda CR-V indicates a malfunction in the Electric Power Steering (EPS) control module. This electronic brain manages all EPS functions, interpreting driver input and vehicle conditions to provide appropriate steering assist.
EPS Control Module Function
The EPS control module receives inputs from the torque sensor (measuring steering effort), vehicle speed sensor, and other systems. It calculates the proper amount of motor current to apply based on these inputs, adjusting assist levels for different driving situations. The module also integrates with Honda's driver assist features that use steering input for lane keeping functions.
Warning Indications
With C1512 active, the EPS warning light illuminates and steering assist may be reduced or eliminated. Honda Sensing features that use EPS input may be disabled. You may notice variable steering effort - sometimes normal, sometimes heavy - depending on the fault mode. The steering wheel center position may also feel off if calibration data is corrupted.
Diagnostic Direction
Module faults can result from internal electronics failure, software corruption, or external factors like voltage spikes or poor grounds. Check battery and charging system condition first. Inspect the EPS module connector for corrosion or damage. Review any recent electrical work or jump-start incidents that might have caused voltage spikes. Honda diagnostic equipment can test internal module functions.
Repair Requirements
If the module has failed internally, replacement is necessary. The EPS control module is often integrated with the motor assembly on the steering column or rack. After replacement, calibration including torque sensor neutral position and steering angle center must be performed with Honda HDS or equivalent equipment.