P2544Torque Management Request Input Signal A
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- Needs a drive cycle to confirm a fix
- How the car detects it
- P2544 concerns torque requests that another module, usually the transmission control module, sends to the engine module – for example to cut torque during a shift. GM's 2020 table 20OBDG04 checks each TCM message for a wrong protection value (16 of 20), a broken rolling counter (6 of 10), an increase request above 1,298 Nm (6 of 10) or the request type toggling too often (3 of 5), type B with two trips. GM's 2012 bulletin PIC4740C for 2006–2013 Cadillac ATS, CTS, SRX and STS with six-speed automatics traces P2544 with many U-codes, hard shifts and no-crank to loose pins in the transmission X1 connector. A GM engineering bulletin on the 2019–2022 Malibu 1.5 L turbo names it next to lost-communication codes; Ford's BOSS 302S list of 2014 has it without a lamp mark. P2545 is the plausibility fault.
- What you may notice
- Check engine light, often with several U-codes
- Harsh shifts or reduced engine power
- Multiple warning lamps, possibly no-crank
- Likely causes
- LikelyLoose or unseated pins at the transmission connector
- PossibleData bus disturbance or failing gateway
- RareTransmission module software or internal fault
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Medium · Usually a job for a workshop.Typical cost: €50 – €800
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.