C0912
TPMS Initiator Front Circuit Malfunction
The TPMS module has detected an electrical fault in the front low-frequency initiator (used to wake and locate sensors). Position learning of the front sensors fails.
- Check engine light: Not always
- Emissions related: No
- Repair difficulty: medium
Symptoms
- ABS warning light on
- ESC/stability control deactivated
- Possible reduced brake assist
- Speedometer may behave erratically
Common causes
Ordered by how often each turns out to be the cause.
- LF initiator coil failedCommon
- Wiring or connector faultPossible
Parts involved
- Tpms Initiator
- Tpms Module
- Initiator Wiring
C0912 is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.