Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2004 Nissan-Datsun Sentra SE-RFACTORY OEM SERVICE PROCEDURE
Section 126 (Body Control Modules)
WARNING: This page is about a different car, the 2002 Nissan Altima. However, it is still accessible from the selected car via links, so may be relevant.
- Description & Operation
- Component Locations
- Trouble Shooting
- Self-Diagnostic System
- Diagnostic Tests
- Notes
- DTC B2049 Open Detect 1: Front Wiper Hi, Intermittent Control 1 & 2 Switch Operation Cannot Be Input
- DTC B2050 Open Detect 2: Front Washer Intermittent Control 3 Cannot Be Input
- DTC B2051 Open Detect 3: Front Wiper Lo, Front Wiper Int & Auto Light Cannot Be Input
- DTC B2052 Open Detect 4: Turn LH, Passing, Headlight 2 & Front Fog Lamp Cannot Be Input
- DTC B2053 Open Detect 5: Turn RH, Headlight 1, Hi Beam & Lighting Switch 1ST Position Cannot Be Input
- DTC B2054 Headlight 1 SW NG: Headlight 1 Malfunction
- DTC B2055 Headlight 2 SW NG: Headlight 2 Malfunction
- DTC U1000 Or DTC U1001: Can Communication Line
- System Tests
- Removal & Installation
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
Rather have a pro handle this?
A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.
Comes to youSame-day available12-month warranty
Get a Free QuoteNo obligation. See pricing before you book.