P2749
Intermediate Shaft Speed Sensor C Circuit
The third intermediate shaft speed sensor returns no usable signal. Used on transmissions with multiple intermediate planetary stages.
- Check engine light: Yes
- Emissions related: No
- Repair difficulty: medium
Common causes
Ordered by how often each turns out to be the cause.
- Open sensor element or broken signal wireCommon
- Corroded sensor connectorPossible
Parts involved
- Intermediate Shaft Speed Sensor C
- Wiring Harness
P2749 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.