P0846 on Nissan Sentra
Transmission Fluid Pressure Sensor/Switch B Circuit Range/Performance
Methodology: Reviewed against the SAE J2012 generic DTC definition and NHTSA owner-complaint patterns, then scoped to Nissan Sentra 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 P0846.
- 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 P0846 Means on Your Nissan Sentra
P0846 is a diagnostic trouble code indicating: Transmission Fluid Pressure Sensor/Switch B 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 Sentra Owner Reports
Source: NHTSA Complaints Database
"My mass air flow sensor came on got that fix now it's alot codes comn up transmission fluid sensor p0846-p0965-p0846-p0965-p0846-p0965-p0101-p0747"
"My car is an automatic 2017 with 58,000 miles. The car is having trouble shifting gears, trouble accelerating (it jerks and doesn’t speed up), leaks every fluid possible (oil, windshield wiper fluid, coolant), etc."
"CVT Transmission cause car to lose power and driving pressure engine codes of P0846 & P0868 transmission fluid pressure & Low pressure to transmission"
All reports filed by vehicle owners directly with the U.S. Department of Transportation.
📊 Complaint Trend by Model Year
Common Causes on Nissan Sentra
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.