P0366: Camshaft Position Sensor "B" Circuit Range/Performance (Bank 1)
2 vehicles · 2 makes · $1,500-$3,500 repair
Most Reported On
P0366 is an OBD-II diagnostic trouble code meaning “Camshaft Position Sensor "B" Circuit Range/Performance (Bank 1).” This code indicates the 'B' camshaft position sensor on Bank 1 is electrically present but its signal is out of the expected range or inconsistent with the crankshaft position signal. The PCM uses this sensor to track camshaft timing for fuel, spark, and variable valve timing control. A range/performance fault can cause rough idle, hesitation, reduced power, or hard starting. It often points to sensor or timing alignment issues rather than a fully open circuit. This code is most commonly reported on 2008-2017 Volkswagen Passat, and 2017-2018 Buick Cascada, with repair costs ranging from $1,500 to $3,500.
Common Causes
Typical Repair Cost
Based on 2 documented vehicle-specific issues. Actual cost depends on root cause and vehicle.
Diagnostic Tools
This is a powertrain code, so a basic OBD-II reader can read it. These read P0366.
ANCEL AD310 Classic OBD-II Scanner
by ANCEL
A simple code reader for engine (P) codes on many compatible OBD-II vehicles. It does not support every vehicle or hybrid/EV application, and it does NOT read body, chassis or network codes; confirm exact-vehicle compatibility before buying.
- Read & clear engine (P) codes
- View freeze frame data
- I/M readiness status
- No batteries or app needed
BlueDriver Pro Bluetooth Scanner
by BlueDriver
Bluetooth scanner with a companion app that reads beyond the engine module — ABS, SRS and transmission — plus manufacturer-specific codes on many vehicles.
- Enhanced diagnostics (ABS, SRS, transmission)
- Repair Reports with verified fixes
- Smog check readiness
- Free app (iOS & Android)
LAUNCH CRP123X V3.0 Elite OBD-II Scanner
by LAUNCH
Handheld scanner covering the 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 tablet with all-system coverage and bi-directional control, so you can command a module rather than only read it.
- All-system diagnostics (25+ modules)
- Bi-directional control & active tests
- Oil reset, EPB, BMS, TPMS, injector coding
- 7-inch touchscreen with Android OS
What you can do yourself, and what needs a shop
Reading the code, clearing it, and watching whether it returns is a driveway job with the right scanner. These steps are not:
- Module programming or software updates — needs the manufacturer software or a J2534 pass-through with a paid subscription.
- Replacing a control module — most are VIN-programmed and immobilizer-registered, so a new one does nothing until it is coded to your car.
- Airbag/SRS component work — a stored fault can deploy a live device.
If the vehicle is still under warranty, check for an open recall or technical service bulletin before buying anything — the repair may already be covered.
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FAQ
What does P0366 mean?
P0366 stands for "Camshaft Position Sensor "B" Circuit Range/Performance (Bank 1)." This code indicates the 'B' camshaft position sensor on Bank 1 is electrically present but its signal is out of the expected range or inconsistent with the crankshaft position signal. The PCM uses this sensor to track camshaft timing for fuel, spark, and variable valve timing control. A range/performance fault can cause rough idle, hesitation, reduced power, or hard starting. It often points to sensor or timing alignment issues rather than a fully open circuit.
What are the most common causes of P0366?
The most common causes of P0366 are: Failing camshaft position sensor (Bank 1, sensor B), Damaged reluctor/tone ring or excessive air gap, Timing chain/belt stretch or jumped timing, Wiring/connector intermittent fault or corrosion, Oil contamination on the sensor, Variable valve timing actuator fault. The specific cause varies by vehicle.
How much does it cost to fix P0366?
Repair costs for P0366 range from $1,500 to $3,500, depending on the vehicle and root cause.
Which vehicles are affected by P0366?
Au7o has documented P0366 across 2 vehicle models from 2 manufacturers: Buick, Volkswagen.
Sources (3)
- owner-reportCarComplaints.com Volkswagen Passat problems index (search within for timing chain/tensioner failures on 2.0T models/years)
- TSBVehicleServicePros - Reprogram Buick ECM With Latest Software (2017-2018 Cascada, P0366/P0014 exhaust cam phaser)
- TSBCarComplaints - 2017 Buick Cascada TSBs (17-NA-338 ECM update for MIL illumination)
Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.