How much does it cost to fix the power steering assist fault?
Typically, diagnostic fees start around $60-$150, with minor fixes often falling in the $100-$300 range. For hydraulic systems, total repairs commonly run from roughly $400-$1,200, while electric power steering (EPS) issues or rack-and-pinion replacements can push the bill into the $1,500-$3,000 range, depending on the vehicle and region.
Power steering assist faults occur when the system that provides steering help—whether hydraulic or electric—fails. Causes can range from a simple low fluid level or a worn belt to leaks, electrical faults in an EPS motor, or a faulty control module. Because the needed parts and labor vary so widely by make and model, the final price can swing significantly. The following sections outline typical costs and what influences them.
What triggers a power steering assist fault?
When the steering assist system detects a problem, it usually triggers a warning light or message. In hydraulic systems, issues often revolve around fluid level, leaks, or worn components like the pump or hoses. In electric power steering setups, the fault can stem from the motor, sensors, wiring, or the control module. A technician will typically scan for fault codes with an OBD-II tool to identify the defective part before quoting a repair.
Hydraulic power steering costs (if your car uses a hydraulic system)
Prices below reflect common ranges for hydraulic systems as of 2025. They include parts and labor but can vary by car model and local shop rates.
- Diagnostic fee and code reading: $60-$150
- Hydraulic fluid top-up and system bleed (if no major parts replacement needed): $10-$150
- Leak repair or hose replacement: $150-$500
- Power steering pump replacement (pump itself): $200-$700 for parts; labor typically $150-$400; total $350-$1,100
- Rack-and-pinion replacement: $600-$2,000 for parts; labor $300-$900; total $900-$2,900
- Miscellaneous parts (belts, reservoirs, pulleys) and disposal fees: $50-$200
In hydraulic systems, the biggest cost driver is the pump or rack replacement. Routine fluid work and small hose repairs are far less expensive, while labor costs vary by region and shop.)
Electric power steering (EPS) costs
EPS faults tend to be more expensive due to specialized components and dealer-level repair requirements. The ranges below reflect typical costs seen in 2025 for many mid-range vehicles; some luxury or high-end models can exceed these figures.
- Diagnostic fee and fault code retrieval: $60-$150
- EPS motor replacement (electric steering motor): $600-$1,500 for parts; labor $300-$700; total $900-$2,200
- EPS sensor or wiring harness replacement: $200-$800 for parts; labor $100-$500; total $300-$1,300
- Steering-angle sensor, rack sensor, or control module replacement: $400-$1,500 for parts; labor $200-$800; total $700-$2,300
- Software reprogramming or module updates: $50-$350
EPS work is often the costliest because it can involve specialized modules and dealer-only software updates. A full module replacement plus reprogramming can push totals toward the upper end of the range.
How to save money and get an accurate quote
To avoid surprise charges, start with multiple written quotes from independent shops and authorized dealers. Ask for a breakdown of parts and labor, and whether the quote includes codes, testing after the repair, and any applicable warranties. If a dealership estimates a very high price, request a shop that has the specific toolset and experience with your vehicle’s make and model. It’s also worth asking about refurbished or remanufactured EPS components where appropriate, as these can reduce costs while maintaining reliability.
Summary
The cost to fix a power steering assist fault varies widely based on the system type (hydraulic vs EPS), the specific failing part, vehicle make/model, and local labor rates. Diagnostic testing typically costs $60-$150; minor fluid-related fixes may be under $500; hydraulic repairs (pump or rack) often total $1,000-$2,500; EPS-related repairs—especially motor or control module replacements—can reach $1,500-$3,000. Always obtain multiple quotes, ensure clarity on parts vs. labor, and confirm warranty coverage on replacement components. A prompt diagnosis can help prevent additional damage and keep the repair within a predictable budget.
