P0386 Code - Crankshaft Position Sensor 'B' Circuit Range/Performance
Quick Answer
The P0386 diagnostic trouble code (DTC) indicates a problem with the crankshaft position sensor 'B' circuit. Common causes include Faulty crankshaft position sensor, Damaged or corroded sensor wiring or connectors, Incorrect sensor installation or alignment. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P0386 indicates Crankshaft Position Sensor 'B' Circuit Range/Performance.
- Common causes
- Common causes include Faulty crankshaft position sensor, Damaged or corroded sensor wiring or connectors, Incorrect sensor installation or alignment.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
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Code P0386 Description
The P0386 diagnostic trouble code (DTC) indicates a problem with the crankshaft position sensor 'B' circuit. The crankshaft position sensor is a vital component of the engine management system in modern vehicles. It is responsible for monitoring the position and rotational speed of the crankshaft, which is crucial for the proper timing of fuel injection and ignition events.
Common Causes of P0386
- Faulty crankshaft position sensor
- Damaged or corroded sensor wiring or connectors
- Incorrect sensor installation or alignment
- Engine timing issues
- ECM software or hardware problems
Symptoms of P0386
- Engine misfires or rough idle
- Difficulty starting the engine
- Loss of power or acceleration
- Stalling or engine shutdown while driving
- Illumination of the check engine light
How to Fix P0386
- Diagnose the issue by using a scan tool to read the DTC and perform testing on the crankshaft position sensor 'B' circuit.
- Inspect the sensor, wiring, and connectors for damage, corrosion, or loose connections. Replace or repair any faulty components.
- Test the sensor's output signal using a multimeter to ensure it is within specifications.
- Check and adjust the sensor's alignment if necessary.
- Clear the DTC and perform a test drive to verify that the issue has been resolved.
Cost to Fix P0386
The cost of repairing a P0386 code can vary depending on the specific cause of the issue. In general, the price of a new crankshaft position sensor can range from $50 to $150, while labor costs for diagnosis and replacement can add another $100 to $200. Overall, the total repair cost for this issue typically falls between $150 and $350. It's important to keep in mind that labor rates at auto repair shops can vary, so it's advisable to check with local shops for more accurate pricing.
Tech Notes for P0386
When is the Code Detected?
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Code P0386 Information for Specific Makes
- P0386 Mercedes-Benz — Crankshaft Position Sensor 'B' Circuit Range/Performance
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