BMW fault code E12C3B

E12C3B is a fault stored in your BMW's memory (an ISTA fault code, not a standard OBD-II P-code).

What it means:
Auto Start/Stop status signal (0x30B) invalid, transmitter DME/DDE. Usually NOT a fault: this is how a deliberately coded-out Auto Start/Stop looks after the owner disabled it. Nothing needs to be done.

Related codes: E10602 · E10603 · E11470 · E1149E · E12CA6 · E18D · E18F · E1C43F

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