Chassis, generic

C0725 Electric Power Steering Motor Circuit

Check engine lightUsually off

EmissionsNot relevant

Drive cycleNot required

Limp modePossible

C0725 has no public documentation; the publicly available J2012 tables, NHTSA bulletins and maker indexes leave it out. Carmakers file assist motor faults elsewhere: GM uses C0475, including symptom 64 for a detected slip in the motor circuit (bulletin PIT5213B), and Stellantis C1592, which the 2019 Jeep Cherokee could log as a general electrical failure and which a software flash addressed under bulletin 08-034-20, sometimes together with a MIL. The motor is usually a brushless machine fed by a power stage; NXP describes control units that measure rotor position and the current in each phase and set PWM duty cycles through field-oriented control. A circuit fault here means a phase, the power stage or the wiring does not behave as commanded, so the module cuts or reduces assist and steering becomes heavy.

Likely causes

Motor winding or power stage in the EPS unit defective

Module software misdiagnoses the motor circuit (update available)

Poor connection between module and motor

Symptoms

Steering warning, assist reduced or lost
Steering feels notchy or jerks while turning

Repair estimate

DifficultyHardWorkshop job

Parts and labour€150–2,500

Time0.5–5 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

eps motoreps control modulepower supply wiring

Related codes

C0730 C0735 C0720

References: static.nhtsa.gov, static.nhtsa.gov, nxp.com.