What does code C0740 mean?

Q: What does code C0740 mean?

Electric Power Steering Voltage Supply. C0740 indicates that the electric power steering (EPS) control module has detected an abnormal voltage supply condition, either too low or too high, on its power feed circuit. The module monitors the voltage at its main supply input and sets this code when the reading falls outside the manufacturer's specified operating range for a calibrated time, which can disable or reduce power assist.

DTC codes / C07xx · Brakes, steering and suspension / C0740

C0740Electric Power Steering Voltage Supply

C0740 indicates that the electric power steering (EPS) control module has detected an abnormal voltage supply condition, either too low or too high, on its power feed circuit. The module monitors the voltage at its main supply input and sets this code when the reading falls outside the manufacturer's specified operating range for a calibrated time, which can disable or reduce power assist.

SystemChassis

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyIntermediate

AreaBrakes, steering and suspension

Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.