P0385
PowertrainCrankshaft Camshaft Positionhigh severityCrankshaft Position Sensor B Circuit Malfunction
What P0385 Means
The PCM detected a fault in the crankshaft position sensor B circuit. This sensor is essential for timing ignition and fuel delivery.
Symptoms
- Check engine light on
- Hard starting or no-start
- Stalling or rough running
Common Causes
- Faulty crankshaft position sensor
- Wiring or connector fault
- Damaged reluctor ring
- Faulty PCM
Diagnostic Steps
- Retrieve codes and freeze frame
- Inspect sensor wiring and connector
- Check reluctor ring condition
- Test and replace sensor if needed
🔌 Don't have a code reader?
Any of these will read and clear this code — pick by how deep you want to go.
Budget handheld~$40
ANCEL AD410 →
No-phone-needed handheld — reads, clears, live data, freeze frame.
✓ ANCEL official store
Serious DIY~$100
BlueDriver Pro →
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Autel MaxiCOM MK808S →
Bidirectional tests, service resets, all systems.
✓ Autel official store
Pro diagnostics$1,500+
Autel MaxiSys MS906 Pro →
Full-system pro platform — topology mapping, ECU coding, the works.
✓ Autel official store
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