U0318
Software Incompatibility with Power Steering Control Module
A control module has detected that its software version does not match the electric power steering module. Steering may stay functional but become heavy if the EPS goes into a fallback mode.
A control module has detected that its software version does not match the electric power steering module. Steering may stay functional but become heavy if the EPS goes into a fallback mode.
Common causes
- high
EPS software/calibration mismatch
One of the most commonly reported causes for this code — check this first.
Typical part cost: $90-880
- medium
Used EPS module fitted from different vehicle
A plausible cause — test and verify before replacing parts.
Typical part cost: $90-880
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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 U0318 mean?
U0318 means "Software Incompatibility with Power Steering Control Module". It is a generic OBD-II code that points to a fault in the network / communication.
What are the most common causes of U0318?
eps software/calibration mismatch; used eps module fitted from different vehicle; gateway module routing can messages incorrectly — 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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