TuningBot DTC Database · v4.37.14
10 manufacturer-specific interpretations across 8 manufacturers in the TuningBot DTC database.
BMWThe control module detected a fault associated with the Fuel Control Mixture Lean Bank 1 Sensor 1 circuit or function; the stored code identifies the affected component rather than a single failure mode. This is the manufacturer-specific definition used by BMW.
DodgeThe control module judged the Ignition coil, 3 - secondary behaviour implausible for the current operating conditions. This is the manufacturer-specific definition used by Dodge.
LexusThe control module detected improper operation of the Camshaft position (CMP) actuator/position sensor, circuit B, bank 2. This is the manufacturer-specific definition used by Lexus.
CMP actuator/position sensor
MINIThe control module detected a fault associated with the Valvetronic Adjustment Range circuit or function; the stored code identifies the affected component rather than a single failure mode. This is the manufacturer-specific definition used by MINI.
MitsubishiThe control module detected improper operation of the Valve timing control valve, bank 2 circuit. This is the manufacturer-specific definition used by Mitsubishi.
PSAThe control module detected the fault condition "Error in initialisation ofupper limit" for the Fault in the programming of the variable valve lift system. Documented for the Bosch MED 17.4.x engine ECU (EP6 THP family) on Peugeot applications; the same PSA control units are also fitted to Citroën models.
The control module detected an internal control-unit fault (Lower stop programming error). Documented for the Bosch MEV17.4 engine ECU (EP6 1.6 VTi) on Peugeot applications; the same PSA control units are also fitted to Citroën models.
ToyotaThe control module detected improper operation of the Camshaft Position Signal Output B circuit. This is the manufacturer-specific definition used by Toyota.
VAGThe control module detected a short circuit to ground in the Fuel pressure control valve circuit. This is the manufacturer-specific definition used by Audi.
The control module detected a short circuit to ground in the Fuel pressure control valve circuit. This is the manufacturer-specific definition used by Volkswagen.
Powertrain: engine, transmission and driveline systems.
Manufacturer-defined range: the meaning can differ between brands.
Specific fault index within the subsystem.
Diagnostic Trouble Code (10 interpretations). The control module detected a fault associated with the Fuel Control Mixture Lean Bank 1 Sensor 1 circuit or function; the stored code identifies the affected component rather than a single failure mode. This is the manufacturer-specific definition used by BMW.
P1023 is a manufacturer-specific code. In this database it is documented for: BMW, Dodge, Lexus, MINI, Mitsubishi, PSA, 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 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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