P0841 on Nissan Altima
Transmission Fluid Pressure Sensor/Switch A Circuit Range/Performance
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 P0841.
- 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 P0841 Means on Your Nissan Altima
P0841 is a diagnostic trouble code indicating: Transmission Fluid Pressure Sensor/Switch A Circuit Range/Performance. 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
"The problem started a few months ago with an occasional shuddering of the car and surging of rpms. this typically happened when i accelerated over 60 mph, but also happened seemingly randomly when maintaining speed."
"Rpm meter fluctauating, p0841 -faulty transmission fluid pressure sensor."
"My wife was driving our 16 altima that just crossed 50k miles on 3/20/21 when she could not accelerate after stopping at a red light. she noticed the rpms were moving higher but the vehicle would not move. she turned off the car while in the middle of the road and was able to restart it."
"The car started shacking once it would go about 25-30 mph. the check engine light turned on after and it was read by a mechanic as a code p0841-transmission fluid pressure sensor/switch. this happens on city streets and highway driving."
"My 2016 altima began to studder and jerk while trying to accelerate and looses power while driving which is an extreme safety concern."
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
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1
Check for recalls on YOUR VIN
Go to nhtsa.gov/recalls and enter your VIN. If your vehicle is covered, repairs are free.
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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.
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3
Compare repair quotes
Get 2–3 quotes. Dealer vs. independent shop prices often differ 30–50% for the same repair.