P2201 on 2018-2023 Ford Transit — NOx Sensor Circuit Range/Performance (Bank 1)
1 vehicles · 1 makes · $350-$1,800 repair
Most Reported On
P2201 is an OBD-II diagnostic trouble code meaning “NOx Sensor Circuit Range/Performance (Bank 1).” This code means the engine computer detected that the NOx (nitrogen oxides) sensor signal on Bank 1 is out of its expected range or not performing correctly. The NOx sensor measures nitrogen oxide levels in the exhaust, mainly on diesel and lean-burn engines, to manage the emissions/SCR system. An implausible reading means the computer can't accurately monitor or control emissions. While not an immediate driving hazard, it can cause emissions faults, failed inspections, and in some vehicles reduced-power modes if the system can't verify proper operation. This code is most commonly reported on 2018-2023 Ford Transit, with repair costs ranging from $350 to $1,800.
Common Causes
Typical Repair Cost
Based on 1 documented vehicle-specific issues. Actual cost depends on root cause and vehicle.
Diagnostic Tools
To diagnose P2201, 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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FAQ
What does P2201 mean?
P2201 stands for "NOx Sensor Circuit Range/Performance (Bank 1)." This code means the engine computer detected that the NOx (nitrogen oxides) sensor signal on Bank 1 is out of its expected range or not performing correctly. The NOx sensor measures nitrogen oxide levels in the exhaust, mainly on diesel and lean-burn engines, to manage the emissions/SCR system. An implausible reading means the computer can't accurately monitor or control emissions. While not an immediate driving hazard, it can cause emissions faults, failed inspections, and in some vehicles reduced-power modes if the system can't verify proper operation.
What are the most common causes of P2201?
The most common causes of P2201 are: Faulty NOx sensor, Wiring or connector problems at the NOx sensor, Exhaust leak near the sensor affecting readings, Contaminated or aged sensor element, DEF/SCR system performance issues skewing readings, NOx sensor control module fault. The specific cause varies by vehicle.
How much does it cost to fix P2201?
Repair costs for P2201 range from $350 to $1,800, depending on the vehicle and root cause.
Which vehicles are affected by P2201?
Au7o has documented P2201 across 1 vehicle models from 1 manufacturers: Ford.
Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.