TuningBot DTC Database · v4.37.15
12 manufacturer-specific interpretations across 10 manufacturers in the TuningBot DTC database.
BMWThe control module detected an electrical fault in the Manifold differential pressure circuit. This is the manufacturer-specific definition used by BMW.
HondaThe control module detected improper operation of the Motor control module (MCM). This is the manufacturer-specific definition used by Honda.
HyundaiThe control module detected a fault associated with the Booster Voltage - Operating Injector circuit or function; the stored code identifies the affected component rather than a single failure mode. This is the manufacturer-specific definition used by Hyundai.
Land RoverThe control module detected a fault associated with the Fuel pump (FP) circuit or function; the stored code identifies the affected component rather than a single failure mode. This is the manufacturer-specific definition used by Land Rover.
MazdaThe control module detected improper operation of the Fuel pump circuit. This is the manufacturer-specific definition used by Mazda.
PSAThe control module detected that the Accelerator pedal point of resistance sensor information was implausible for the operating conditions. Documented for the Bosch EDC16C34 injection ECU (DV6TED4 1.6 HDi) on Peugeot applications; the same PSA control units are also fitted to Citroën models.
The control module detected that the Accelerator pedal hard point switch signal was not coherent with related operating data. Documented for the Magneti Marelli MM6KP engine ECU (EW7A/EW10A) on Peugeot applications; the same PSA control units are also fitted to Citroën models.
The control module detected that the Accelerator pedal point of resistance sensor information was implausible for the operating conditions. Documented for the Siemens SID 803 injection ECU (DW10BTED4 2.0 HDi) on Peugeot applications; the same PSA control units are also fitted to Citroën models.
RenaultThe control module detected a fault associated with the Heater relay control 2 circuit or function; the stored code identifies the affected component rather than a single failure mode. This is the manufacturer-specific definition used by Renault.
SuzukiThe control module registered the fault condition described as "Immobilizer information error". This is the manufacturer-specific definition used by Suzuki.
ToyotaThe control module detected improper operation of the Body control module. This is the manufacturer-specific definition used by Toyota.
VAGThe control module did not receive the expected CAN data bus, 4WD signal. This is the manufacturer-specific definition used by Audi.
Powertrain: engine, transmission and driveline systems.
Manufacturer-defined range: the meaning can differ between brands.
Specific fault index within the subsystem.
Diagnostic Trouble Code (12 interpretations). The control module detected an electrical fault in the Manifold differential pressure circuit. This is the manufacturer-specific definition used by BMW.
P1645 is a manufacturer-specific code. In this database it is documented for: BMW, Honda, Hyundai, Land Rover, Mazda, PSA, Renault, Suzuki, Toyota, VAG. 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. 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.
Understand the system behind this code: Immobilizer Systems and ECU Pairing
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