P0841: Transmission Fluid Pressure Sensor/Switch "A" Circuit Range/Performance
7 vehicles · 7 makes · $200-$6,500 repair
Most Reported On
P0841 is an OBD-II diagnostic trouble code meaning “Transmission Fluid Pressure Sensor/Switch "A" Circuit Range/Performance.” This powertrain code means the transmission computer detected the 'A' transmission fluid pressure sensor or switch reading out of its expected range or not matching actual operating conditions. This sensor converts hydraulic line pressure into an electrical signal the computer uses to manage shift timing and quality. An out-of-range reading can cause incorrect shift behavior, harsh or slipping shifts, or limp mode. It should be addressed to prevent drivability problems and possible transmission damage. This code is most commonly reported on 2018-2020 CUPRA Leon (Cupra, Cupra R, Cupra ST), 2019-2021 Hyundai Veloster (2.0, 2.0 Premium), and 2009-2023 Nissan Maxima, plus 4 other vehicles, with repair costs ranging from $200 to $6,500.
Common Causes
Typical Repair Cost
Based on 7 documented vehicle-specific issues. Actual cost depends on root cause and vehicle.
Diagnostic Tools
To diagnose P0841, you'll need an OBD-II scanner. Here are our recommendations at every price point.
ANCEL AD310 Classic OBD-II Scanner
by ANCEL
A simple, affordable code reader that reads and clears check engine codes. Great for quick diagnostics on any OBD-II vehicle (1996+).
- Read & clear engine codes
- View freeze frame data
- I/M readiness status
- No batteries or app needed
BlueDriver Pro Bluetooth Scanner
by BlueDriver
Bluetooth OBD-II scanner with a free companion app. Provides enhanced diagnostics, smog readiness, and repair reports sourced from a database of verified fixes.
- Enhanced diagnostics (ABS, SRS, transmission)
- Repair Reports with verified fixes
- Smog check readiness
- Free app (iOS & Android)
LAUNCH CRP123X OBD-II Scanner
by LAUNCH
A professional-grade handheld scanner that reads all four major systems (engine, transmission, ABS, SRS) with live data streaming and graphing.
- Engine, transmission, ABS, SRS diagnostics
- Live data stream & graphing
- AutoVIN for vehicle identification
- Free lifetime updates via Wi-Fi
Autel MaxiCOM MK808S Diagnostic Tool
by Autel
Shop-level diagnostic tablet with bi-directional control, active tests, and full system coverage. Ideal for serious DIYers and small shops.
- All-system diagnostics (25+ modules)
- Bi-directional control & active tests
- Oil reset, EPB, BMS, TPMS, injector coding
- 7-inch touchscreen with Android OS
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Vehicles Affected (7)
FAQ
What does P0841 mean?
P0841 stands for "Transmission Fluid Pressure Sensor/Switch "A" Circuit Range/Performance." This powertrain code means the transmission computer detected the 'A' transmission fluid pressure sensor or switch reading out of its expected range or not matching actual operating conditions. This sensor converts hydraulic line pressure into an electrical signal the computer uses to manage shift timing and quality. An out-of-range reading can cause incorrect shift behavior, harsh or slipping shifts, or limp mode. It should be addressed to prevent drivability problems and possible transmission damage.
What are the most common causes of P0841?
The most common causes of P0841 are: Low or contaminated transmission fluid, Faulty transmission fluid pressure sensor/switch, Wiring or connector problems in the sensor circuit, Clogged filter or restricted fluid passages, Worn valve body or internal pressure control fault, Faulty transmission control module (less common). The specific cause varies by vehicle.
How much does it cost to fix P0841?
Repair costs for P0841 range from $200 to $6,500, depending on the vehicle and root cause.
Which vehicles are affected by P0841?
Au7o has documented P0841 across 7 vehicle models from 7 manufacturers: Audi, CUPRA, Hyundai, Nissan, SEAT, Subaru, Volkswagen.
Sources (12)
- TSBHyundai TSB 21-AT-006H / 21-AT-006H-1 (IVT DTC diagnostic information for P0867/P0730/P0746/P0841 and related conditions)
- NHTSANHTSA complaints search results for 2020 Hyundai Veloster transmission hesitation/loss of power
- articleAre SEAT Arona models with DSG reliable? — Honest John (Ask HJ)
- article0AM DQ200 DSG Mechatronic Fault P0841/P17BF/P189C — Eco-Torque
- RecallNHTSA Recall 21V-955 / WRK-21 CVT Chain Guide Breakage
- ForumRECALL: WRK21 / NHTSA 21V955000 - Ascent CVT Chain Guide Breakage
- articleSubaru Ascent CVT Lawsuit Settlement Information
- articleCommon Problems With VW T-Roc — ClickMechanic Blog
- ForumDSG severe lag problem — Volkswagen T-Roc Forum
- articleVolkswagen T-Roc: Common Problems & Solutions — CarNews
- articleVW / Audi 0AM DQ200 Mechatronic Failures - Symptoms & Fault Codes - Eco Torque
- articleDSG 7 DQ200 0AM automatic gearbox recall 2019
Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.