P0826 on Nissan Altima
Up and Down Shift Switch Circuit
Methodology: Reviewed against the SAE J2012 generic DTC definition and NHTSA owner-complaint patterns, then scoped to Nissan Altima context without treating complaints as confirmed diagnoses.
Sources: SAE/OBD-II definitions, manufacturer service information, and public reliability reports (including NHTSA where applicable).
- SAE J2012 Diagnostic Trouble Code Definitions — Generic diagnostic trouble code definition reference for P0826.
- NHTSA recalls, complaints, and manufacturer communications — Used to check public owner complaint context, recall status, and safety-related manufacturer communications by VIN or vehicle.
Limits: Guidance is informational and may not match every model-year or revision. Confirm with the official manual and diagnostics before replacing parts. For safety-critical or electrical work, use a qualified technician.
What P0826 Means on Your Nissan Altima
P0826 is a diagnostic trouble code indicating: Up and Down Shift Switch Circuit. This code relates to the transmission system. The vehicle's computer detected a condition outside normal operating parameters and stored this code.
Real Nissan Altima Owner Reports
Source: NHTSA Complaints Database
"My 2011 nissan altima has less than 53,000 miles, for the past several months i keep getting a check engine light that comes on and then goes away after about a week."
"Three hours into my drive, i was going about 70 mph and noticed my car started to slow down and was making a noise. i pulled over, got out, checked my power steering fluid. it was fine so i drove off and as i was entering the freeway, i noticed the car wasn't picking up speed again."
All reports filed by vehicle owners directly with the U.S. Department of Transportation.
📊 Complaint Trend by Model Year
Common Causes on Nissan Altima
Based on NHTSA complaint component analysis for this vehicle.
What To Do Next
-
1
Check for recalls on YOUR VIN
Go to nhtsa.gov/recalls and enter your VIN. If your vehicle is covered, repairs are free.
-
2
Get a proper diagnosis
A code alone doesn't tell you the exact failed part. A diagnostic at a shop ($50–$150) pinpoints the root cause before you spend money on parts.
-
3
Compare repair quotes
Get 2–3 quotes. Dealer vs. independent shop prices often differ 30–50% for the same repair.