2015 Ford Escape Power Steering Assist Fault: EPAS Diagnosis & Steering Rack Replacement Guide
Step-by-step checks to confirm no hydraulic pump, scan EPAS/PSCM codes, test battery/grounds, and complete relearn + alignment
2015 Ford Escape Power Steering Assist Fault: EPAS Diagnosis & Steering Rack Replacement Guide
Step-by-step checks to confirm no hydraulic pump, scan EPAS/PSCM codes, test battery/grounds, and complete relearn + alignment


🔧 Escape - Power Steering “Pump” Replacement (Verification & Correct Repair Path)
Your Escape uses an electric power steering system (EPAS), which means it typically has no hydraulic power steering pump and no power steering fluid. So there usually isn’t a pump you can replace—steering assist comes from an electric motor on the steering rack.
Difficulty Level: Beginner (verification) / Advanced (steering rack replacement) | Estimated Time: 0.2-0.5 hours (verification) / 4-8 hours (rack)
⚠️ Safety & Precautions
- ⚠️ If you’ll work under the vehicle, support it with jack stands on solid ground—never rely on a jack.
- ⚠️ Keep hands clear of the steering linkage while anyone turns the wheel.
- ⚠️ If you unplug steering/airbag-area wiring, disconnect the negative battery cable and wait 5 minutes.
- ⚠️ After any steering rack work, a professional alignment is required.
đź”§ Required Tools
You'll need the following tools for this repair:
- Flashlight
- Trim clip remover
- Flathead screwdriver
- 8mm socket
- 10mm socket
- Mechanic gloves
- Safety glasses
- Floor jack (rated 3-ton minimum)
- Jack stands (rated 3-ton minimum)
- OBD2 scan tool with Ford EPAS/PSCM functions (specialty)
🔩 Required Parts
HowToo sells all the parts you need for this repair:
- Steering rack assembly (EPAS) - Qty: 1
- Outer tie rod ends - Qty: 2
- Steering rack mounting hardware kit - Qty: 1
đź“‹ Before You Begin
- Park on level ground, set the parking brake, and center the steering wheel.
- Have your radio presets/clock noted (battery disconnect may reset them).
- Know the key terms: EPAS = electric power steering; rack = the part that turns your wheels.
🔨 Step-by-Step Instructions
Follow these steps in order:
Step 1: Confirm whether your Escape has a hydraulic pump (most do not)
- Open the hood and use a flashlight to look for a small fluid reservoir cap labeled Power Steering or PSF.
- If you cannot find a power steering fluid reservoir, your Escape is EPAS and there is no pump to replace.
- Tip: EPAS cars won’t have PS fluid on the dipstick.
Step 2: Identify the real failure area (EPAS system)
- Plug in an OBD2 scan tool with Ford EPAS/PSCM functions (specialty).
- Check for EPAS/PSCM trouble codes and record them (codes matter a lot here).
- If you have warnings like “Power Steering Assist Fault,” the fix is usually in the steering rack (motor/torque sensor), wiring, battery/charging, or the PSCM logic—not a pump.
Step 3: Quick under-hood electrical checks (common EPAS cause)
- Use a 10mm socket to verify the battery terminals are tight and clean.
- Inspect the main ground connections you can see (look for looseness/corrosion).
- If steering assist drops out mainly at idle or with accessories on, charging/battery issues can trigger EPAS faults.
Step 4: If you truly have a power steering fluid reservoir
- Reply with what you see (reservoir location and a photo if possible).
- On a hydraulic system, pump replacement depends on belt routing and line type—procedures differ, and we’ll use the correct OEM steps for your setup.
âś… After Repair
- If you end up replacing the EPAS steering rack: perform required PSCM/steering angle relearn with an OBD2 scan tool with Ford EPAS functions (specialty).
- Get a 4-wheel alignment immediately after any rack/tie-rod work.
- Road test at low speed first, then normal speeds, checking for pull, noise, or warning messages.
đź’° DIY vs Shop Cost
Shop Cost: $1,200-$2,400 (EPAS steering rack replacement + alignment)
DIY Cost: $450-$1,200 (parts only, plus alignment)
You Save: $600-$1,500 by doing it yourself!
Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 4-8 hours.
🎯 Ready to get started?
HowToo makes it easy: same-day/2-day shipping on every part, plus all the tools and specialty tools you need! Check out the parts and tools sections below to add everything to your cart.
Two quick questions so I can give you the exact correct procedure:
- 🧰 Do you see a power steering fluid reservoir/cap anywhere under the hood—yes or no?
- 🧠What symptom are you fixing: hard steering, whining noise, leak, or “Power Steering Assist Fault” message?
















