What does code P0635 mean?

Q: What does code P0635 mean?

Power Steering Control Circuit. P0635 indicates that the powertrain control module has detected a fault in the electrical circuit that controls the power steering system, often involving the power steering control module or the variable assist solenoid. The computer monitors voltage or current on the control circuit and sets this code when the signal falls outside the expected range, which can affect steering effort.

DTC codes / P06xx · Computer and output circuits / P0635

P0635Power Steering Control Circuit

P0635 indicates that the powertrain control module has detected a fault in the electrical circuit that controls the power steering system, often involving the power steering control module or the variable assist solenoid. The computer monitors voltage or current on the control circuit and sets this code when the signal falls outside the expected range, which can affect steering effort.

SystemPowertrain

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyIntermediate

AreaComputer and output circuits

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