TuningBot DTC Database · v4.37.14
2 manufacturer-specific interpretations across 2 manufacturers in the TuningBot DTC database.
BMWThe control module detected improper operation of the Battery temperature circuit. This is the manufacturer-specific definition used by BMW.
Battery temperature sensor
PSAThe stored code identifies a fault of the Safety level 2. Documented for the MCP 6-speed piloted manual gearbox ECU on Peugeot applications; the same PSA control units are also fitted to Citroën models. PSA documentation does not characterise the failure mode further.
Powertrain: engine, transmission and driveline systems.
Manufacturer-defined range: the meaning can differ between brands.
Specific fault index within the subsystem.
Diagnostic Trouble Code (2 interpretations). The control module detected improper operation of the Battery temperature circuit. This is the manufacturer-specific definition used by BMW.
P166A is a manufacturer-specific code. In this database it is documented for: BMW, PSA. The same number can mean something different on other brands.
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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