C0559 — Power Steering Control Module Range/Performance – Rear

What Does C0559 Mean?

C0559 is a diagnostic trouble code indicating: Power Steering Control Module Range/Performance – Rear. This code relates to the chassis system. The vehicle's computer detected a condition outside normal operating parameters and stored this code.

Symptoms of C0559

⚠️ Check Engine Light (MIL) illuminated
⚠️ Power Steering Control Module not operating within expected parameters
⚠️ Reduced efficiency or performance of related system
⚠️ ABS or stability control warning light

Common Causes

🔍 Power Steering Control Module degraded or contaminated
🔍 Mechanical wear or binding in Power Steering Control Module
🔍 Incorrect Power Steering Control Module installed (wrong part number)
🔍 Related system mechanical issue affecting Power Steering Control Module readings

Frequently Asked Questions

What does C0559 mean?

C0559 indicates: Power Steering Control Module Range/Performance – Rear. The vehicle's computer has detected that the Power Steering Control Module is not operating within its expected parameters and stored this diagnostic trouble code.

Can I drive with code C0559?

Only short distances if absolutely necessary. C0559 affects a critical system and should be diagnosed within a few days to avoid further damage.

How much does it cost to fix C0559?

Repair costs for C0559 typically range from $50 to $400, depending on the root cause. Simple wiring or connector repairs are on the lower end, while component replacement costs more. A proper diagnosis ($80–$150 at most shops) will identify the exact cause before committing to expensive parts.

What To Do Next

Possible Fixes

🔧 Inspect and clean Power Steering Control Module
🔧 Replace degraded Power Steering Control Module
🔧 Check for related mechanical issues affecting readings

1
Find your vehicle above
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2
Check for recalls
Go to nhtsa.gov/recalls and enter your VIN. Free repairs if covered.
3
Get a professional diagnosis
A code alone doesn't identify the exact failed part. A diagnostic ($50–$150) pinpoints the root cause.

C0559: Power Steering Control Module Range/Performance – Rear