EPS Ground Circuit High Resistance
The C0548 code means the vehicle's onboard diagnostic system has detected: EPS Ground Circuit High Resistance. This is a critical severity code.
- Keep driving?
- Short distances only
- DIY difficulty
- moderate
- Estimated cost
- $100 - $800 (parts and labor)
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Common Symptoms
- Power steering warning light on
- EPS assist level reduced
- Steering effort changes with temperature
- EPS system disabled
Probable Causes (Ranked by Likelihood)
- Low system voltage affecting EPS Very High
- Failed EPS power relay High
- Corroded EPS ground connection Moderate
- CAN bus communication fault Low
Step-by-Step Diagnostic Procedure
-
Check system voltage at EPS module
-
Test EPS power supply relay
-
Inspect EPS ground connections
-
Verify CAN bus communication to EPS
Frequently Asked Questions
What does code C0548 mean?
C0548 indicates a fault with the eps ground circuit high resistance.
Can I drive with C0548?
You can drive short distances but steering will require more effort. Drive slowly and carefully to a repair shop.
How much does it cost to fix C0548?
Typical repair costs are $100 - $800 (parts and labor).
Sources
This page is built from documented references. Verify against your own service info before repair work.
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