TuningBot DTC Database · v4.37.14
Generic (OBD-II) interpretation in the TuningBot DTC database.
The control module judged the Internal Control Module Transmission Gear Ratio Control behaviour implausible for the current operating conditions.
Powertrain: engine, transmission and driveline systems.
Generic SAE-standard code: same meaning on every make.
Specific fault index within the subsystem.
Internal Control Module Transmission Gear Ratio Control Performance. The control module judged the Internal Control Module Transmission Gear Ratio Control behaviour implausible for the current operating conditions.
P27B5 is a generic OBD-II code: it has the same meaning on every make and model that follows the SAE standard.
If the fault logic lives in the ECU calibration, yes: our DTC Removal file service disables the specific fault entry and, where the ECU needs it, corrects the checksum too. Not sure whether your case qualifies? Request a free assessment and our engineers will check your ECU file.
Understand the system behind this code: Diagnostic Strategy and DTC Logic
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