P1386
CautionVariable Cam Timing Overadvanced (Bank #1)/ Misfire Detected - No Communication with BCM
Is it safe to drive?
🔵 Do not use this page as drive-clearance. Monitor the alert and arrange service if it returns.
What does P1386 mean?
P-code P1386 means "Variable Cam Timing Overadvanced (Bank #1)/ Misfire Detected - No Communication with BCM". It is a manufacturer-specific diagnostic trouble code (DTC) in the ignition system. A communication failure has been detected — the module responsible for the variable cam timing overadvanced (bank #1)/ misfire detected - no communication with bcm is not responding on the vehicle network. This code can be monitored, but service is recommended to prevent escalation. This code applies to OBD-II compliant electric and hybrid vehicles.
Possible Causes
- CAN bus wiring fault (short, open, or termination resistor failure)
- Faulty control module not transmitting on the vehicle network
- Power supply issue preventing the module from initializing
- Software mismatch or corruption in the affected module
Recommended Actions
- 1 Note the alert and schedule a diagnostic appointment when convenient
- 2 Scan for all DTCs with an OBD-II scanner — note any related codes stored alongside P1386
- 3 Check CAN bus wiring for damage; verify termination resistance (should be ~120 Ω between CAN-H and CAN-L)
- 4 Verify power supply and ground connections at the affected module
- 5 Clear the DTC, road-test the vehicle, and re-scan to confirm whether the fault returns
- 6 If the fault persists after inspection and clearing, consult an EV-certified technician for component replacement