P0386 on 2000-2002 Cadillac Eldorado — Crankshaft Position Sensor "B" Circuit Range/Performance
1 vehicles · 1 makes · $200-$500 repair
Most Reported On
P0386 is an OBD-II diagnostic trouble code meaning “Crankshaft Position Sensor "B" Circuit Range/Performance.” This generic OBD-II code sets when the powertrain control module detects that the signal from the secondary ("B") crankshaft position sensor is out of its expected range or behaving erratically (intermittent, noisy, or inconsistent with other engine speed/position inputs). The crankshaft position sensor reports engine RPM and crank angle, which the PCM uses to control fuel injection and ignition timing. This code is most commonly reported on 2000-2002 Cadillac Eldorado, with repair costs ranging from $200 to $500.
Common Causes
Typical Repair Cost
Based on 1 documented vehicle-specific issues. Actual cost depends on root cause and vehicle.
Diagnostic Tools
To diagnose P0386, 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
As an Amazon Associate, we earn from qualifying purchases. Prices are approximate and may vary.
FAQ
What does P0386 mean?
P0386 stands for "Crankshaft Position Sensor "B" Circuit Range/Performance." This generic OBD-II code sets when the powertrain control module detects that the signal from the secondary ("B") crankshaft position sensor is out of its expected range or behaving erratically (intermittent, noisy, or inconsistent with other engine speed/position inputs). The crankshaft position sensor reports engine RPM and crank angle, which the PCM uses to control fuel injection and ignition timing.
What are the most common causes of P0386?
The most common causes of P0386 are: Faulty or failing crankshaft position sensor 'B', Damaged, corroded, or loose sensor connector or wiring harness, Excessive air gap or debris/metal shavings on the reluctor (tone) wheel, Damaged or misaligned crankshaft reluctor/trigger wheel teeth, Intermittent open or short in the sensor signal/ground circuit, Electromagnetic interference from nearby wiring or a failing PCM (rare). The specific cause varies by vehicle.
How much does it cost to fix P0386?
Repair costs for P0386 range from $200 to $500, depending on the vehicle and root cause.
Which vehicles are affected by P0386?
Au7o has documented P0386 across 1 vehicle models from 1 manufacturers: Cadillac.
Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.