P2545
Torque Management Request Input Signal A Range/Performance
The ECM receives torque-management requests from other modules (TCM during shifts, ABS/ESC during traction events, hybrid controller). Input A is electrically intact but its values do not match the system model — out-of-range steps, jumps, or persistent values that other modules cannot confirm.
- Check engine light: Yes
- Emissions related: No
- Repair difficulty: hard
Common causes
Ordered by how often each turns out to be the cause.
- Requesting module sending invalid valuesCommon
- Communication bus corruption between modulesPossible
- Sensor element aged beyond calibration windowLess likely
Parts involved
- Torque Management Input A
P2545 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.