P0544: owner reports and bulletins

Powertrain (generic, all makes). We haven't written the explanation for this code yet. Below is what owners and manufacturers have filed with NHTSA.

Got P0544 on your scanner? Tell the mechanic your year, make, model and any symptoms and you'll get the likely cause and what to check first. Ask about this code.

What owners report to NHTSA

1 complaints filed with NHTSA mention P0544, 1 of them since 2015, across 1 different models. The component owners most often filed it under: electrical system.

Manufacturer service bulletins that name P0544

35 technical service bulletins and manufacturer communications filed with NHTSA mention P0544, from 2 makes. A bulletin means the manufacturer has documented a known cause or a fix procedure for that model. Examples:

  • RAM 3500 (2014), bulletin 10176590: Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the Engine Control Module/Powertrain Control Module (ECM/PCM) with the latest available software. Customers may experience a Malfunction…
  • INFINITI Q50 (2016, 2017), bulletin 10118687: 2016-2017 Q50 AND 2017 Q60; MIL IS ON WITH DTC STORED IF YOU CONFIRM The MIL is ON with one or more of the following DTCs stored: P0544 - (EXHAUST GAS TEMP SENSOR 1 B1) P0545 - (EXHAUST GAS TEMP SENSOR 1 B1) P0546 - (EXH…
  • RAM 5500 (2014), bulletin 10139600: Flash: Diagnostic And System Improvements This bulletin involves selectively erasing and reprogramming the Engine Control Module (ECM/PCM) with new software. Several software improvements are available for vehicles equip…
  • RAM 2500 (2014), bulletin 10139778: Flash: 6.7L Diagnostic And System Improvements This bulletin involves reprogramming the Powertrain Control Module (PCM) with new software. Several software improvements are available for vehicles equipped with a Cummins …
  • RAM 4500 (2013), bulletin 10139841: Flash: 6.7L Diagnostic and System Improvements This bulletin involves selectively erasing and reprogramming the Engine Control Module (ECM) with new software. Several software improvements are available for vehicles equi…

Sources: NHTSA Office of Defects Investigation complaint database and manufacturer communications file, snapshots September 2026. A complaint or bulletin that mentions a code is a report about that vehicle, not a statement that the code has one cause.