C0475 on 2014-2016 Cadillac XTS — Electric Steering Motor Circuit
1 vehicles · 1 makes
Most Reported On
C0475 is an OBD-II diagnostic trouble code meaning “Electric Steering Motor Circuit.” This is a General Motors chassis code. The Power Steering Control Module (PSCM) monitors commanded versus actual current in the three-phase electric power steering (EPS) assist motor and sets C0475 when it sees a fault such as an open, a short, motor position outside the allowed tolerance, missing motor sensor trim configuration, or excessive rack travel. When it sets, the module typically shuts down steering assist to protect the circuit, so the steering wheel becomes very heavy while the vehicle remains fully steerable manually. It is seen on GM vehicles with electric power steering, including Chevrolet, GMC, Buick and Cadillac models. This code is most commonly reported on 2014-2016 Cadillac XTS.
Common Causes
Diagnostic Tools
This is a chassis code. A basic engine-code reader will not show it — you need a scanner that reads chassis modules. These read C0475.
One caveat that applies to every scanner: only powertrain codes are standardised across manufacturers. Body, chassis and network coverage is "enhanced" diagnostics, and how deep it goes varies by make and model year — check your specific vehicle against the tool's coverage list before buying.
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What you can do yourself, and what needs a shop
Reading the code, clearing it, and watching whether it returns is a driveway job with the right scanner. These steps are not:
- Module programming or software updates — needs the manufacturer software or a J2534 pass-through with a paid subscription.
- Replacing a control module — most are VIN-programmed and immobilizer-registered, so a new one does nothing until it is coded to your car.
- Airbag/SRS component work — a stored fault can deploy a live device.
If the vehicle is still under warranty, check for an open recall or technical service bulletin before buying anything — the repair may already be covered.
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FAQ
What does C0475 mean?
C0475 stands for "Electric Steering Motor Circuit." This is a General Motors chassis code. The Power Steering Control Module (PSCM) monitors commanded versus actual current in the three-phase electric power steering (EPS) assist motor and sets C0475 when it sees a fault such as an open, a short, motor position outside the allowed tolerance, missing motor sensor trim configuration, or excessive rack travel. When it sets, the module typically shuts down steering assist to protect the circuit, so the steering wheel becomes very heavy while the vehicle remains fully steerable manually. It is seen on GM vehicles with electric power steering, including Chevrolet, GMC, Buick and Cadillac models.
What are the most common causes of C0475?
The most common causes of C0475 are: Failed electric power steering assist motor, Open, shorted, or chafed wiring in the EPS motor harness, Corroded or loose EPS motor connector / poor electrical connection, Weak battery, failing alternator, loose battery terminal or bad ground causing low system voltage (EPS needs a stable 9-16V and can draw very high current), Blown power steering fuse or fusible link, Faulty power steering control module (PSCM). The specific cause varies by vehicle.
How much does it cost to fix C0475?
Repair costs vary widely depending on the root cause and vehicle.
Which vehicles are affected by C0475?
Au7o has documented C0475 across 1 vehicle models from 1 manufacturers: Cadillac.
Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.