2018 Nissan Altima Power Steering Pump Replacement? EPS Troubleshooting & Repair Guide
Learn why the Altima uses electric power steering (no pump) and how to diagnose EPS codes, fuses, wiring, battery/charging, and rack issues
2018 Nissan Altima Power Steering Pump Replacement? EPS Troubleshooting & Repair Guide
Learn why the Altima uses electric power steering (no pump) and how to diagnose EPS codes, fuses, wiring, battery/charging, and rack issues


🔧 Altima - Power Steering Pump Replacement
Your Altima (2.5L) uses Electric Power Steering (EPS), so it does not have a hydraulic power steering pump, fluid reservoir, or power steering belt to replace.
What we can do instead is verify the EPS system and pinpoint what part actually failed (commonly the EPS steering rack, wiring, fuses, or low battery/charging issues).
Difficulty Level: Beginner | Estimated Time: 0.5-1.5 hours
⚠️ Safety & Precautions
- ⚠️ If you unplug EPS connectors, turn ignition OFF and disconnect the battery first.
- ⚠️ Support the car with jack stands before going under it.
- ⚠️ Keep fingers clear of the steering column and linkage while testing.
- ⚠️ If the steering gets heavy while driving, slow down and pull over safely.
🔧 Required Tools
You'll need the following tools for this repair:
- OBD2 scan tool with Nissan ABS/EPS capability (specialty)
- Digital multimeter
- 10mm socket
- Ratchet
- Trim clip removal tool
- Flathead screwdriver
- Floor jack (rated 2-ton minimum)
- Jack stands (rated 2-ton minimum)
- Wheel chocks
- Safety glasses
- Nitrile gloves
- Flashlight
🔩 Required Parts
HowToo sells all the parts you need for this repair:
- EPS steering gear assembly (electric power steering rack) - Qty: 1
- EPS rack mounting hardware kit - Qty: 1
- Steering column intermediate shaft pinch bolt - Qty: 1
📋 Before You Begin
- Park on level ground, set the parking brake, and use wheel chocks.
- If the EPS warning light is on, plan to scan codes first before unplugging anything.
- If you’ll unplug EPS connectors: disconnect the negative battery cable using a 10mm socket.
🔨 Step-by-Step Instructions
Follow these steps in order:
Step 1: Confirm your Altima has EPS (no pump)
- Open the hood and look for a power steering fluid reservoir (a small plastic tank labeled “Power Steering”). There should be none on your Altima.
- Look at the belt area with a flashlight. There will be no separate power steering pump driven by the belt.
Step 2: Check the dash for the EPS warning
- Turn the ignition to ON (engine can be OFF) and see if a steering wheel warning light is on.
- Note your exact symptom: heavy steering all the time, only at low speeds, or intermittent.
Step 3: Scan for EPS-related codes
- Plug in your OBD2 scan tool with Nissan ABS/EPS capability (specialty) and run a full scan.
- Write down any codes from EPS/ABS modules (not just “P-codes”). Codes tell you what to test next.
Step 4: Quick power/voltage check (very common cause)
- Use a digital multimeter at the battery terminals.
- Engine OFF: you generally want around 12.4V+ on a healthy battery.
- Engine running: you typically want charging voltage around 13.5–14.7V.
- If voltage is low, fix battery/charging issues first—EPS can disable itself when voltage drops.
Step 5: Inspect EPS fuses (basic check)
- Use your owner’s manual to locate the EPS-related fuses in the fuse boxes.
- Remove access covers with a flathead screwdriver or by hand.
- If a fuse is blown, replace it with the exact same amperage rating.
Step 6: Inspect EPS rack electrical connectors (no parts removed yet)
- Lift the front of the car using a floor jack (rated 2-ton minimum) and support it with jack stands (rated 2-ton minimum).
- Use a flashlight to locate the EPS steering rack at the front subframe (the steering gear).
- Check visible wiring for rub-through, broken clips, corrosion, or unplugged connectors.
Step 7: If codes point to the EPS rack/motor, plan the correct repair
- If your scan tool indicates an internal EPS failure, the usual fix is replacing the EPS steering gear assembly (the rack).
- This is an Advanced job and typically requires an alignment afterward and may require steering angle sensor calibration with a capable scan tool.
✅ After Repair
- Clear EPS/ABS codes using the OBD2 scan tool with Nissan ABS/EPS capability (specialty) and recheck for returning codes.
- Road test in a safe area: confirm steering assist is normal and the warning light stays off.
- If the steering gear/rack is replaced: get a professional wheel alignment immediately.
💰 DIY vs Shop Cost
Shop Cost: $900-$2,200 (diagnosis + parts + labor + alignment)
DIY Cost: $0-$1,200 (diagnosis/parts only; alignment extra)
You Save: $300-$1,000 by doing it yourself!
Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 2-5 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.
Quick questions (so I can point you to the exact fix):
- ❓ Is the steering wheel warning light on (yes/no)?
- ❓ What symptom do you have: heavy steering all the time, only at low speeds, or intermittent?

















