Toyota 30CM5101.cuw Engine Control Calibration
Learn how Toyota calibration 30CM5101 relates to a 2014 Tundra engine control update for trouble code P2610 and the malfunction indicator light.
30CM5101.cuw is an engine control calibration associated with a Toyota service bulletin for the 2014 Tundra. Toyota lists calibration 30CM5101 as an updated version in a bulletin addressing an illuminated malfunction indicator light and diagnostic trouble code P2610.
What the calibration controls
The engine control module manages engine operation and monitors emissions-related systems for faults. P2610 concerns the module’s internal engine-off timer performance. That timer tracks how long the engine has been off, information the controller can use when deciding when to run certain diagnostic checks.
In practical terms, a P2610 fault can turn on the malfunction indicator light, commonly called the check engine light. The code identifies a problem with the timer’s performance, but it does not by itself establish the cause.
2014 Tundra service bulletin context
Toyota bulletin T-SB-0146-16 identifies 30CM5101 as an updated calibration for the documented P2610 and malfunction indicator light concern. The bulletin connects this revision to that service issue. It does not establish that the calibration changes engine power, transmission behavior or other driving characteristics.
The bulletin’s 2014 Tundra listing provides the vehicle context for this calibration. The complete calibration identifier matters when distinguishing this record from other Toyota firmware files with similar prefixes.