The control module judged the Internal Control Module Transmission Range Select behaviour implausible for the current operating conditions.
TuningBot DTC Database · v4.37.15
P27B1 Internal Control Module Transmission Range Select Performance
Generic (OBD-II) interpretation in the TuningBot DTC database.
What P27B1 means
Related and nearby codes
How to read P27B1
Powertrain: engine, transmission and driveline systems.
Generic SAE-standard code: same meaning on every make.
Specific fault index within the subsystem.
Frequently asked questions about P27B1
What does P27B1 mean?
Internal Control Module Transmission Range Select Performance. The control module judged the Internal Control Module Transmission Range Select behaviour implausible for the current operating conditions.
Is P27B1 generic or manufacturer-specific?
P27B1 is a generic OBD-II code: it has the same meaning on every make and model that follows the SAE standard.
Can TuningBot remove P27B1 at file level?
If the fault logic lives in the ECU calibration, yes: our DTC Removal file service disables the specific fault entry. Checksum correction is not included: it is a separate, optional service. Not sure whether your case qualifies? Request a free assessment and our engineers will check your ECU file.
Other file services
Understand the system behind this code: Diagnostic Strategy and DTC Logic
