Electronic Power Steering Motor Circuit Malfunction
What does C0245 mean?
The C0245 code means the vehicle's onboard diagnostic system has detected: Electronic Power Steering Motor Circuit Malfunction. This is a critical severity code.
Common Symptoms
- Power steering warning light on
- Steering becomes heavy or difficult
- Electric power steering assist intermittent
- Steering effort changes with temperature
- Buzzing or whining noise from steering column or rack
Probable Causes (Ranked by Likelihood)
- Failed electric power steering motor Very High
- EPS motor wiring harness damage High
- EPS control module failure Moderate
- Corroded motor connector Moderate
- Overheated motor from sustained heavy steering effort Low
Step-by-Step Diagnostic Procedure
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Scan for DTCs and check EPS motor current draw in live data
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Inspect EPS motor connector for corrosion or damage
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Check motor wiring for chafing, especially near the steering column
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Test EPS motor resistance against specifications
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Verify battery voltage and alternator output -- EPS needs adequate power
Frequently Asked Questions
Can I still steer with a failed EPS motor?
Yes, but the steering will be very heavy, especially at low speeds and during parking. At highway speeds, steering effort is somewhat lighter. Use caution and get it repaired soon.
Is the EPS motor part of the steering rack?
It depends on the vehicle. Some have the motor on the steering column, while others have it mounted directly on the steering rack. Column-mounted motors are typically easier and cheaper to replace.
Can low battery voltage cause EPS failure?
Yes. The EPS motor draws significant electrical current. A weak battery or failing alternator may not provide enough power, causing the system to reduce or disable power steering assist.