C0740
Electric Power Steering Voltage Supply
The supply voltage to the EPS module is out of range, reducing or disabling power assist.
The supply voltage to the EPS module is out of range, reducing or disabling power assist.
Common causes
- high
Battery undervoltage during high steering load
One of the most commonly reported causes for this code — check this first.
Typical part cost: $70-440
- medium
Ground point corroded
A plausible cause — test and verify before replacing parts.
Typical part cost: $70-440
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First things to check
- 1Confirm the code with a scan tool and check for additional related codes.
- 2Inspect the relevant sensors, wiring, and connectors for damage or corrosion.
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Related codes
See related trouble codes
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Frequently asked questions
What does C0740 mean?
C0740 means "Electric Power Steering Voltage Supply". It is a generic OBD-II code that points to a fault in the chassis.
What are the most common causes of C0740?
battery undervoltage during high steering load; ground point corroded — these are the most commonly reported causes. Verify with a proper diagnosis before replacing parts, or use the Wrenchify app for a vehicle-specific diagnosis.
Can I keep driving with this code?
The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical. Use the Wrenchify app for a full diagnosis specific to your vehicle.
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